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ORGANIC SPECTROSCOPY

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DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO, Born in Mumbai in 1964 and graduated from Mumbai University, Completed his Ph.D from ICT, 1991,Matunga, Mumbai, India, in Organic Chemistry, The thesis topic was Synthesis of Novel Pyrethroid Analogues, Currently he is working with GLENMARK PHARMACEUTICALS LTD, Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 30 plus yrs, Prior to joining Glenmark, he has worked with major multinationals like Hoechst Marion Roussel, now Sanofi, Searle India Ltd, now RPG lifesciences, etc. He has worked with notable scientists like Dr K Nagarajan, Dr Ralph Stapel, Prof S Seshadri, Dr T.V. Radhakrishnan and Dr B. K. Kulkarni, etc, He did custom synthesis for major multinationals in his career like BASF, Novartis, Sanofi, etc., He has worked in Discovery, Natural products, Bulk drugs, Generics, Intermediates, Fine chemicals, Neutraceuticals, GMP, Scaleups, etc, he is now helping millions, has 9 million plus hits on Google on all Organic chemistry websites. His friends call him Open superstar worlddrugtracker. His New Drug Approvals, Green Chemistry International, All about drugs, Eurekamoments, Organic spectroscopy international, etc in organic chemistry are some most read blogs He has hands on experience in initiation and developing novel routes for drug molecules and implementation them on commercial scale over a 30 year tenure till date Dec 2017, Around 35 plus products in his career. He has good knowledge of IPM, GMP, Regulatory aspects, he has several International patents published worldwide . He has good proficiency in Technology transfer, Spectroscopy, Stereochemistry, Synthesis, Polymorphism etc., He suffered a paralytic stroke/ Acute Transverse mylitis in Dec 2007 and is 90 %Paralysed, He is bound to a wheelchair, this seems to have injected feul in him to help chemists all around the world, he is more active than before and is pushing boundaries, He has 9 million plus hits on Google, 2.5 lakh plus connections on all networking sites, 50 Lakh plus views on dozen plus blogs, He makes himself available to all, contact him on +91 9323115463, email amcrasto@gmail.com, Twitter, @amcrasto , He lives and will die for his family, 90% paralysis cannot kill his soul., Notably he has 19 lakh plus views on New Drug Approvals Blog in 216 countries......https://newdrugapprovals.wordpress.com/ , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc

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PF 04965842, Abrocitinib


PF-04965842, >=98% (HPLC).png

img

2D chemical structure of 1622902-68-4

PF-04965842

PF 04965842, Abrocitinib

UNII: 73SM5SF3OR

CAS Number 1622902-68-4, Empirical Formula  C14H21N5O2S, Molecular Weight 323.41

N-[cis-3-(Methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)cyclobutyl]-1-propanesulfonamide,

N-((1s,3s)-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)cyclobutyl)propane-1-sulfonamide

1-Propanesulfonamide, N-(cis-3-(methyl-7H-pyrrolo(2,3-d)pyrimidin-4-ylamino)cyclobutyl)-

N-{cis-3-[Methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-propane-1-sulfonamide

PHASE 3, for the potential oral treatment of moderate-to-severe atopic dermatitis (AD)

Jak1 tyrosine kinase inhibitor

THE US

In February 2018, the FDA granted Breakthrough Therapy designation for the treatment of patients with moderate-to-severe AD

PHASEIII

In December 2017, a randomized, double-blind, placebo-controlled, parallel-group, phase III trial (NCT03349060; JADE Mono-1; JADE; B7451012; 2017-003651-29) of PF-04965842 began in patients aged 12 years and older (expected n = 375) with moderate-to-severe AD

PRODUCT PATENT

Pub. No.: WO/2014/128591 International Application No.: PCT/IB2014/058889
Publication Date: 28.08.2014 International Filing Date: 11.02.2014

EXPIRY  Roughly 2034

form powder
color white to beige
solubility DMSO: 10 mg/mL, clear
storage temp. room temp
    Biochem/physiol Actions
    • PF-04965842 is a Janus Kinase (JAK) inhibitor selective for JAK1 with an IC50value of 29 nM for JAK1 compared to 803 nM for JAK2, >10000 nM for JAK3 and 1250 nM for Tyk2. JAKs mediate cytokine signaling, and are involved in cell proliferation and differentiation. PF-04965842 has been investigated as a possible treatment for psoriasis.
  • Originator Pfizer
  • Class Skin disorder therapies; Small molecules
  • Mechanism of Action Janus kinase 1 inhibitors

Highest Development Phases

  • Phase IIIAtopic dermatitis
  • DiscontinuedLupus vulgaris; Plaque psoriasis

Most Recent Events

  • 08 Mar 2018Phase-III clinical trials in Atopic dermatitis (In children, In adults, In adolescents) in USA (PO) (NCT03422822)
  • 14 Feb 2018PF 4965842 receives Breakthrough Therapy status for Atopic dermatitis in USA
  • 06 Feb 2018Pfizer plans the phase III JADE EXTEND trial for Atopic Dermatitis (In children, In adults, In adolescents) in March 2018 (PO) (NCT03422822)

This compound was developed by Pfizer for Kinase Phosphatase Biology research. To learn more about Sigma′s partnership with Pfizer and view other authentic, high-quality Pfizer compounds,

Image result for PF-04965842

PF-04965842 is an oral Janus Kinase 1 inhibitor being investigated for treatment of plaque psoriasis.

Protein kinases are families of enzymes that catalyze the phosphorylation of specific residues in proteins, broadly classified into tyrosine and serine/threonine kinases. Inappropriate kinase activity, arising from mutation, over-expression, or inappropriate regulation, dys-regulation or de-regulation, as well as over- or under-production of growth factors or cytokines has been i mplicated in many diseases, including but not limited to cancer, cardiovascular diseases, allergies, asthma and other respiratory diseases, autoimmune d iseases, inflammatory diseases, bone diseases, metabolic disorders, and neurological and neurodegenerative disorders such as Alzheimer’s disease. Inappropriate kinase activity triggers a variety of biological cellular responses relating to cell growth, cell differentiation , survival, apoptosis, mitogenesis, cell cycle control, and cel l mobility implicated in the aforementioned and related diseases.

Thus, protein kinases have emerged as an important class of enzymes as targets for therapeutic intervention. In particular, the JAK family of cellular protein tyrosine kinases (JAK1, JAK2, JAK3, and Tyk2) play a central role in cytoki ne signaling (Kisseleva et al., Gene, 2002, 285 , 1; Yamaoka et al. Genome Biology 2004, 5, 253)). Upon binding to their receptors, cytokines activate JAK which then phosphorylate the cytokine receptor, thereby creating docking sites for signaling molecules, notably, members of the signal transducer and activator of transcription (STAT) family that ultimately lead to gene expression. Numerous cytokines are known to activate the JAK family. These cytokines include, the IFN family (IFN-alpha, IFN-beta, IFN-omega, Limitin, IFN-gamma, IL- 10, IL- 19, IL-20, IL-22), the gp 130 family (IL-6, IL- 11, OSM, LIF, CNTF, NNT- 1//SF-3, G-CSF, CT- 1, Leptin, IL- 12 , I L-23), gamma C family (IL-2 , I L-7, TSLP, IL-9, IL- 15 , IL-21, IL-4, I L- 13), IL-3 family (IL-3 , IL-5 , GM-CSF), single chain family (EPO, GH, PRL, TPO), receptor tyrosine kinases (EGF, PDGF, CSF- 1, HGF), and G-protein coupled receptors (ATI).

There remains a need for new compounds that effectively and selectively inhibit specific JAK enzymes, and JAK1 in particular, vs. JAK2. JAK1 is a member of the Janus family of protein kinases composed of JAK1, JAK2, JAK3 and TYK2. JAK1 is expressed to various levels in all tissues. Many cytokine receptors signal through pairs of JAK kinases in the following combinations: JAK1/JAK2, JAK1/JAK3, JAK1/TYK2 , JAK2/TYK2 or JAK2/JAK2. JAK1 is the most broadly

paired JAK kinase in this context and is required for signaling by γ-common (IL-2Rγ) cytokine receptors, IL—6 receptor family, Type I, II and III receptor families and IL- 10 receptor family. Animal studies have shown that JAK1 is required for the development, function and homeostasis of the immune system. Modulation of immune activity through inhibition of JAK1 kinase activity can prove useful in the treatment of various immune disorders (Murray, P.J.

J. Immunol., 178, 2623-2629 (2007); Kisseleva, T., et al., Gene, 285 , 1-24 (2002); O’Shea, J . J., et al., Ceil , 109, (suppl .) S121-S131 (2002)) while avoiding JAK2 dependent erythropoietin (EPO) and thrombopoietin (TPO) signaling (Neubauer H., et al., Cell, 93(3), 397-409 (1998);

Parganas E., et al., Cell, 93(3), 385-95 (1998)).

Figure

Tofacitinib (1), baricitinib (2), and ruxolitinib (3)

SYNTHESIS 5+1 =6 steps

Main synthesis

Journal of Medicinal Chemistry, 61(3), 1130-1152; 2018

INTERMEDIATE

CN 105732637

ONE STEP

CAS 479633-63-1,  7H-Pyrrolo[2,3-d]pyrimidine, 4-chloro-7-[(4- methylphenyl)sulfonyl]-

Image result for PF-04965842

Pfizer Receives Breakthrough Therapy Designation from FDA for PF-04965842, an oral JAK1 Inhibitor, for the Treatment of Patients with Moderate-to-Severe Atopic Dermatitis

Wednesday, February 14, 2018 8:30 am EST

Dateline:

NEW YORK

Public Company Information:

NYSE:
PFE
US7170811035
“We look forward to working closely with the FDA throughout our ongoing Phase 3 development program with the hope of ultimately bringing this important new treatment option to these patients.”

NEW YORK–(BUSINESS WIRE)–Pfizer Inc. (NYSE:PFE) today announced its once-daily oral Janus kinase 1 (JAK1) inhibitor PF-04965842 received Breakthrough Therapy designation from the U.S. Food and Drug Administration (FDA) for the treatment of patients with moderate-to-severe atopic dermatitis (AD). The Phase 3 program for PF-04965842 initiated in December and is the first trial in the J AK1 A topic D ermatitis E fficacy and Safety (JADE) global development program.

“Achieving Breakthrough Therapy Designation is an important milestone not only for Pfizer but also for patients living with the often devastating impact of moderate-to-severe atopic dermatitis, their providers and caregivers,” said Michael Corbo, Chief Development Officer, Inflammation & Immunology, Pfizer Global Product Development. “We look forward to working closely with the FDA throughout our ongoing Phase 3 development program with the hope of ultimately bringing this important new treatment option to these patients.”

Breakthrough Therapy Designation was initiated as part of the Food and Drug Administration Safety and Innovation Act (FDASIA) signed in 2012. As defined by the FDA, a breakthrough therapy is a drug intended to be used alone or in combination with one or more other drugs to treat a serious or life-threatening disease or condition and preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. If a drug is designated as a breakthrough therapy, the FDA will expedite the development and review of such drug.1

About PF-04965842 and Pfizer’s Kinase Inhibitor Leadership

PF-04965842 is an oral small molecule that selectively inhibits Janus kinase (JAK) 1. Inhibition of JAK1 is thought to modulate multiple cytokines involved in pathophysiology of AD including interleukin (IL)-4, IL-13, IL-31 and interferon gamma.

Pfizer has established a leading kinase research capability with multiple unique kinase inhibitor therapies in development. As a pioneer in JAK science, the Company is advancing several investigational programs with novel selectivity profiles, which, if successful, could potentially deliver transformative therapies for patients. Pfizer has three additional kinase inhibitors in Phase 2 development across multiple indications:

  • PF-06651600: A JAK3 inhibitor under investigation for the treatment of rheumatoid arthritis, ulcerative colitis and alopecia areata
  • PF-06700841: A tyrosine kinase 2 (TYK2)/JAK1 inhibitor under investigation for the treatment of psoriasis, ulcerative colitis and alopecia areata
  • PF-06650833: An interleukin-1 receptor-associated kinase 4 (IRAK4) inhibitor under investigation for the treatment of rheumatoid arthritis

Working together for a healthier world®

At Pfizer, we apply science and our global resources to bring therapies to people that extend and significantly improve their lives. We strive to set the standard for quality, safety and value in the discovery, development and manufacture of health care products. Our global portfolio includes medicines and vaccines as well as many of the world’s best-known consumer health care products. Every day, Pfizer colleagues work across developed and emerging markets to advance wellness, prevention, treatments and cures that challenge the most feared diseases of our time. Consistent with our responsibility as one of the world’s premier innovative biopharmaceutical companies, we collaborate with health care providers, governments and local communities to support and expand access to reliable, affordable health care around the world. For more than 150 years, we have worked to make a difference for all who rely on us. We routinely post information that may be important to investors on our website at www.pfizer.com. In addition, to learn more, please visit us on www.pfizer.com and follow us on Twitter at @Pfizer and @Pfizer_NewsLinkedInYouTube and like us on Facebook at Facebook.com/Pfizer.

DISCLOSURE NOTICE: The information contained in this release is as of February 14, 2018. Pfizer assumes no obligation to update forward-looking statements contained in this release as the result of new information or future events or developments.

This release contains forward-looking information about PF-04965842 and Pfizer’s ongoing investigational programs in kinase inhibitor therapies, including their potential benefits, that involves substantial risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements. Risks and uncertainties include, among other things, the uncertainties inherent in research and development, including the ability to meet anticipated clinical trial commencement and completion dates and regulatory submission dates, as well as the possibility of unfavorable clinical trial results, including unfavorable new clinical data and additional analyses of existing data; risks associated with preliminary data; the risk that clinical trial data are subject to differing interpretations, and, even when we view data as sufficient to support the safety and/or effectiveness of a product candidate, regulatory authorities may not share our views and may require additional data or may deny approval altogether; whether regulatory authorities will be satisfied with the design of and results from our clinical studies; whether and when drug applications may be filed in any jurisdictions for any potential indication for PF-04965842 or any other investigational kinase inhibitor therapies; whether and when any such applications may be approved by regulatory authorities, which will depend on the assessment by such regulatory authorities of the benefit-risk profile suggested by the totality of the efficacy and safety information submitted, and, if approved, whether PF-04965842 or any such other investigational kinase inhibitor therapies will be commercially successful; decisions by regulatory authorities regarding labeling, safety and other matters that could affect the availability or commercial potential of PF-04965842 or any other investigational kinase inhibitor therapies; and competitive developments.

A further description of risks and uncertainties can be found in Pfizer’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016 and in its subsequent reports on Form 10-Q, including in the sections thereof captioned “Risk Factors” and “Forward-Looking Information and Factors That May Affect Future Results”, as well as in its subsequent reports on Form 8-K, all of which are filed with the U.S. Securities and Exchange Commission and available at www.sec.gov  and www.pfizer.com .

Image result for PF-04965842

# # # # #

1 Food and Drug Administration Fact Sheet Breakthrough Therapies at https://www.fda.gov/RegulatoryInformation/LawsEnforcedbyFDA/SignificantAmendmentstotheFDCAct/FDASIA/ucm329491.htmaccessed on January 25, 2018

PATENT

CA 2899888

PATENT

WO 2014128591

https://patentscope.wipo.int/search/en/detail.jsf;jsessionid=6767BBB5964A985E88C9251B6DF3182B.wapp2nB?docId=WO2014128591&recNum=233&maxRec=8235&office=&prevFilter=&sortOption=&queryString=EN_ALL%3Anmr+AND+PA%3Apfizer&tab=PCTDescription

PFIZER INC. [US/US]; 235 East 42nd Street New York, New York 10017 (US)

BROWN, Matthew Frank; (US).
FENWICK, Ashley Edward; (US).
FLANAGAN, Mark Edward; (US).
GONZALES, Andrea; (US).
JOHNSON, Timothy Allan; (US).
KAILA, Neelu; (US).
MITTON-FRY, Mark J.; (US).
STROHBACH, Joseph Walter; (US).
TENBRINK, Ruth E.; (US).
TRZUPEK, John David; (US).
UNWALLA, Rayomand Jal; (US).
VAZQUEZ, Michael L.; (US).
PARIKH, Mihir, D.; (US)

COMPD 2

str1

Example 2 : N-{cis-3-[Methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-propane- l -sulƒonamide

This compound was prepared using 1-propanesulfonyl chloride. The crude compound was purified by chromatography on silica gel eluting with a mixture of dichloromethane and methanol (93 : 7) to afford the title compound as a tan sol id (78% yield). 1NMR (400 MHz, DMSO-d6): δ 11.60 (br s, 1 H), 8.08 (s, 1 H), 7.46 (d, 1 H), 7.12 (d, 1 H), 6.61 (d, 1 H), 4.81-4.94 (m, 1 H), 3.47-3.62 (m, 1 H), 3.23 (s, 3 H), 2.87-2.96 (m, 2 H), 2.52-2.63 (m, 2 H), 2.14-2.27 (m, 2 H) 1.60- 1.73 (m, 2 H) 0.96 (t, 3 H). LC/MS (exact mass) calculated for C14H21N5O2S;

323.142, found (M + H+); 324.1.

PAPER

 Journal of Medicinal Chemistry (2018), 61(3), 1130-1152.

Abstract Image

https://pubs.acs.org/doi/abs/10.1021/acs.jmedchem.7b01598

N-{cis-3-[Methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}propane-1-sulfonamide (25)

Compound 48a·2HBr …………..was collected by filtration, washed with 2:1 EtOH/H2O (100 mL), and again dried overnight in a vacuum oven at 40 °C.
1H NMR (400 MHz, DMSO-d6): 11.64 (br s, 1H), 8.12 (s, 1 H), 7.50 (d, J = 9.4 Hz, 1H), 7.10–7.22 (m, 1H), 6.65 (dd, J= 1.8, 3.3 Hz, 1H), 4.87–4.96 (m, 1H), 3.53–3.64 (m, 1H), 3.27 (s, 3H), 2.93–2.97 (m, 2H), 2.57–2.64 (m, 2H), 2.20–2.28 (m, 2H), 1.65–1.74 (m, 2H), 0.99 (t, J = 7.4 Hz, 3H).
LC/MS m/z (M + H+) calcd for C14H22N5O2S: 324. Found: 324. Anal. Calcd for C14H21N5O2S: C, 51.99; H, 6.54; N, 21.65; O, 9.89; S, 9.91. Found: C, 52.06; H, 6.60; N, 21.48; O, 10.08; S, 9.97.

SchmiederG.DraelosZ.PariserD.BanfieldC.CoxL.HodgeM.KierasE.Parsons-RichD.MenonS.SalganikM.PageK.PeevaE. Efficacy and safety of the Janus Kinase 1 inhibitor PF-04965842 in patients with moderate to severe psoriasis: phase 2, randomized, double-blind, placebo-controlled study Br. J. Dermatol. 2017DOI: 10.1111/bjd.16004

Compound 25N-{cis-3-[Methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-propane-1-sulfonamide is available through MilliporeSigma (cat. no. PZ0304).

REFERENCES

1: Schmieder GJ, Draelos ZD, Pariser DM, Banfield C, Cox L, Hodge M, Kieras E, Parsons-Rich D, Menon S, Salganik M, Page K, Peeva E. Efficacy and safety of the Janus Kinase 1 inhibitor PF-04965842 in patients with moderate to severe psoriasis: phase 2, randomized, double-blind, placebo-controlled study. Br J Dermatol. 2017 Sep 26. doi: 10.1111/bjd.16004. [Epub ahead of print] PubMed PMID: 28949012

 2 Journal of Medicinal Chemistry (2018), 61(3), 1130-1152.

  • Originator Pfizer
  • Class Anti-inflammatories; Antipsoriatics; Pyrimidines; Pyrroles; Skin disorder therapies; Small molecules; Sulfonamides
  • Mechanism of Action Janus kinase 1 inhibitors
  • Phase III Atopic dermatitis
  • Discontinued Lupus vulgaris; Plaque psoriasis
  • 21 May 2019Pfizer initiates enrolment in a phase I trial in Healthy volunteers in USA (PO) (NCT03937258)
  • 09 May 2019 Pfizer plans a phase I pharmacokinetic and drug-drug interaction trial in healthy volunteers in May 2019 (NCT03937258)
  • 30 Apr 2019 Pfizer completes a phase I trial (In volunteers) in USA (PO) (NCT03626415)

/////////PF 04965842, Abrocitinib, Phase III,  Atopic dermatitis, pfizer

CCCS(=O)(N[C@H]1C[C@@H](N(C)C2=C3C(NC=C3)=NC=N2)C1)=O

CCCS(=O)(=O)N[C@@H]1C[C@@H](C1)N(C)c2ncnc3[nH]ccc23

Piclidenoson, иклиденозон , بيكليدينوسون , 匹利诺生 ,


img

Thumb

ChemSpider 2D Image | Piclidenoson | C18H19IN6O4

DB05511.png

CF 101, Piclidenoson

ALB-7208

CAS 152918-18-8
Chemical Formula: C18H19IN6O4
Molecular Weight: 510.28

(2S,3S,4R,5R)-3,4-Dihydroxy-5-{6-[(3-iodobenzyl)amino]-9H-purin-9-yl}-N-methyltetrahydro-2-furancarboxamide

N6-(3-Iodobenzyl)adenosine-5′-N-methyluronamide

β-D-Ribofuranuronamide, 1-deoxy-1-[6-[[(3-iodophenyl)methyl]amino]-9H-purin-9-yl]-N-methyl-

1-Deoxy-1-[6-[[(3-iodophenyl)methyl]amino]-9H-purin-9-yl]-N-methyl-β-D-ribofuranuronamide

10136
1-Deoxy-1-[6-[((3-Iodophenyl)methyl)amino]-9H-purin-9-yl]-N-methyl-β-D-ribofuranuronamide
30679UMI0N
UNII-30679UMI0N
Пиклиденозон [Russian] [INN]
بيكليدينوسون [Arabic] [INN]
匹利诺生 [Chinese] [INN]

CF 101 (known generically as IB-MECA) is an anti-inflammatory drug for rheumatoid arthritis patients. Its novel mechanism of action relies on antagonism of adenoside A3 receptors. CF101 is supplied as an oral drug and has an excellent safety profile. It is also being considered for the treatment of other autoimmune-inflammatory disorders, such as Crohn’s disease, psorasis and dry eye syndrome.

Image result for CF 101, Piclidenoson

  • Originator Can-Fite BioPharma
  • Class Amides; Anti-inflammatories; Antineoplastics; Antipsoriatics; Antirheumatics; Eye disorder therapies; Iodobenzenes; Neuroprotectants; Purine nucleosides; Ribonucleosides; Small molecules
  • Mechanism of Action Adenosine A3 receptor agonists; Immunosuppressants; Interleukin 23 inhibitors; Interleukin-17 inhibitors
  • Phase III Plaque psoriasis; Rheumatoid arthritis
  • Phase II Glaucoma; Ocular hypertension
  • Phase I Uveitis
  • Preclinical Osteoarthritis
  • Discontinued Colorectal cancer; Dry eyes; Solid tumours
  • 05 Feb 2019 Can-Fite BioPharma receives patent allowance for A3 adenosine receptor (A3AR) agonists in USA
  • 05 Feb 2019 Can-Fite BioPharma receives patent allowance for A3 adenosine receptor (A3AR) agonists in North America, South America, Europe and Asia
  • 21 Aug 2018 Phase-III clinical trials in Plaque psoriasis (Monotherapy) in Israel (PO)

Piclidenoson, also known as CF101, is a specific agonist to the A3 adenosine receptor, which inhibits the development of colon carcinoma growth in cell cultures and xenograft murine models. CF101 has been shown to downregulate PKB/Akt and NF-κB protein expression level. CF101 potentiates the cytotoxic effect of 5-FU, thus preventing drug resistance. The myeloprotective effect of CF101 suggests its development as an add-on treatment to 5-FU.

Piclidenoson is known to be a TNF-α synthesis inhibitor and a neuroprotectant. use as an A3 adenosine receptor agonist, useful for treating rheumatoid arthritis (RA), psoriasis, osteoarthritis and glaucoma.

Can-Fite BioPharma , under license from the National Institutes of Health (NIH), is developing a tablet formulation of CF-101, an adenosine A3 receptor-targeting, TNF alpha-suppressing low molecular weight molecule for the potential treatment of psoriasis, RA and liver cancer. The company is also investigating a capsule formulation of apoptosis-inducing namodenoson, the lead from a program of adenosine A3 receptor agonist, for treating liver diseases, including hepatocellular carcinoma (HCC). In January 2019, preclinical data for the treatment of obesity were reported. Also, see WO2019105217 , WO2019105359 and WO2019105082 , published alongside.

PATENT

WO-2019105388

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2019105388&tab=FULLTEXT&maxRec=1000

Novel crystalline forms of CF-101 (also known as piclidenoson; designated as Forms CS1, CS2 and CS3), processes for their preparation, compositions comprising them and their use as an A3 adenosine receptor agonist for treating rheumatoid arthritis, psoriasis, osteoarthritis and glaucoma are claimed

CF-101 was developed by Kan-Fete Biomedical Co., Ltd. By the end of 2018, CF-101 is in clinical phase III for the treatment of autoimmune diseases such as rheumatoid arthritis, osteoarthritis and psoriasis, as well as glaucoma. CF-101 is an A3 adenosine receptor (A3AR) agonist, and adenosine plays an important role in limiting inflammation through its receptor. Adenosine can produce anti-inflammatory effects by inhibiting TNF-a, interleukin-1, and interleukin-6. Studies have shown that A3AR agonists are in different experimental autoimmune models, such as rheumatoid arthritis, Crohn’s disease, and silver swarf. In the disease, it acts as an anti-inflammatory agent by improving the inflammatory process.
The chemical name of CF-101 is: 1-deoxy-I-(6-{[(3-iodophenyl)methyl]amino}-9H-fluoren-9-yl)-N-methyl-bD-ribofuranose Carbonamide (hereinafter referred to as “Compound I”) has the following structural formula:
A crystal form is a solid in which a compound molecule is orderedly arranged in a microstructure to form a crystal lattice, and a drug polymorphism phenomenon means that two or more different crystal forms of a drug exist.
Due to different physical and chemical properties, different crystal forms of drugs may have different dissolution and absorption in the body, which may affect the clinical efficacy and safety of the drug to a certain extent; especially for poorly soluble solid drugs, the crystal form will have greater influence. Therefore, the drug crystal form is inevitably an important part of drug research and an important part of drug quality control. Most importantly, the study of crystal forms is beneficial to find a crystal form that is clinically therapeutically meaningful and has stable and physicochemical properties.
There are no reports of CF-101 related crystal forms so far. Amorphous is generally not suitable as a medicinal form, and the molecules in the amorphous material are disorderly arranged, so they are in a thermodynamically unstable state. Amorphous solids are in a high-energy state, and generally have poor stability. During the production and storage process, amorphous drugs are prone to crystal transformation, which leads to the loss of consistency in drug bioavailability, dissolution rate, etc., resulting in changes in the clinical efficacy of the drug. In addition, the amorphous preparation is usually a rapid kinetic solid precipitation process, which easily leads to excessive residual solvents, and its particle properties are difficult to control by the process, making it a challenge in the practical application of the drug.
Therefore, there is a need to develop a crystalline form of CF-101 that provides a usable solid form for drug development. The inventors of the present application have unexpectedly discovered the crystalline forms CS1, CS2 and CS3 of Compound I, which have melting point, solubility, wettability, purification, stability, adhesion, compressibility, fluidity, dissolution in vitro and in vivo, and biological effectiveness. There is an advantage in at least one of the properties and formulation processing properties. Crystalline CS1 has advantages in physical and chemical properties, especially physical and chemical stability, low wettability, good solubility and good mechanical stability. It provides a new and better choice for the development of drugs containing CF-101, which is very important. The meaning.
Figure 7 is a 1 H NMR spectrum of the crystalline form CS3 obtained according to Example 7 of the present invention
The nuclear magnetic data of the crystalline form CS3 obtained in Example 7 was: { 1 H NMR (400 MHz, DMSO) δ 8.82 – 8.93 (m, 1H), 8.53 – 8.67 (m, 1H), 8.45 (s, 1H), 8.31 ( s, 1H), 7.73 (s, 1H), 7.59 (d, J = 7.7 Hz, 1H), 7.36 (d, J = 7.7 Hz, 1H), 7.11 (t, J = 7.8 Hz, 1H), 5.98 ( d, J = 7.4 Hz, 1H), 5.74 (s, 1H), 5.56 (s, 1H), 4.64 (d, J = 29.3 Hz, 3H), 4.32 (s, 1H), 4.15 (s, 1H), 2.71 (d, J = 4.6 Hz, 3H), 1.91 (s, 3H).}. Form CS3 has a single peak at 1.91, corresponding to the hydrogen chemical shift of the acetic acid molecule. According to the nuclear magnetic data, the molar ratio of acetic acid molecule to CF-101 is 1:1, and its 1 H NMR is shown in FIG.7

PAPER

Journal of medicinal chemistry (1994), 37(5), 636-46

https://pubs.acs.org/doi/pdf/10.1021/jm00031a014

PAPER

Journal of medicinal chemistry (1998), 41(10), 1708-15

https://pubs.acs.org/doi/abs/10.1021/jm9707737

PAPER

Bioorganic & Medicinal Chemistry (2006), 14(5), 1618-1629

PATENT

WO 2015009008

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2015009008

Example 1
Preparation Example 1: Synthesis of Compound (5) (S) -2 – ((R) -1- (2-Chloro-6- (3-iodobenzylamino) -9H- purin- Hydroxyethoxy) -3-hydroxy-N-methylpropanamide)
Scheme 1
Step 1: A solution of (2R, 3S, 4S, 5R) -2- (benzoyloxymethyl) -5- (2,6- dichloro-9H- purin-9- yl) tetrahydrofuran- Preparation of benzoate (7)
Starting material A mixture of (2R, 3R, 4S, 5R) -2-acetoxy-5- (benzoyloxymethyl) tetrahydrofuran-3,4-diyldibenzoate (7.5 g, 14.9 mmol) (3.09 g, 16.4 mmol) was dissolved in acetonitrile (50 mL), and a solution of N, O-bis (trimethylsilyl) acetamid (8.9 mL, 36.4 mmol) was slowly added dropwise for 10-15 minutes Then, the mixture is stirred at 60 DEG C for 30 minutes. After cooling the reaction solution to -30 ° C, TiCl 4 (60 mL, 1 M methylene chloride solution, 59.5 mmol) is added dropwise, and the mixture is stirred at 60-65 ° C for 20 minutes. After confirming the completion of the reaction, methylene chloride (500 mL) and saturated sodium hydrogencarbonate solution (500 mL) are added. The reaction solution was stirred at 0 ° C for 30 minutes, and the organic layer was extracted and dried over anhydrous magnesium sulfate. After concentration under reduced pressure, the obtained residue was separated by column chromatography to obtain the intermediate compound (2R, 3S, 4S, 5R) -2- (benzoyloxymethyl) -5- (2,6- dichloro- Yl) tetrahydrofuran-3,4-diyl dibenzoate (9.3 g, 98.8%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CDCl 3 ) δ ppm 4.71-4.74 (dd, J = 12.22, 3.91 Hz, 1H), 4.85-4.93 (m, 2H), 6.12-6.14 (t, J = 4.89 Hz, 1H) (M, 1H), 6.16-6.19 (t, J = 5.38 Hz, 1H), 6.47-6.48 (d, J = 5.38 Hz, 1H), 7.35-7.38 4H), 7.54-7.61 (m, 3H), 7.92-7.93 (d, J = 7.33 Hz, 2H), 8.02-8.06 (m, 4H), 8.28 (s, 1H); 13C NMR (125 MHz; CDCl 3 ) δ 63.50, 71.59, 74.33, 81.56, 87.05, 128.14, 128.59 (3), 128.63 (2), 128.73 (2), 129.10, 129.63 (2), 129.88 (2), 129.92 (2), 131.38, 133.63, 133.87, 133.98, 143.81, 152.36, 152.64, 153.51, 165.13, 165.29, 166.03; mp = 76-80 [deg.] C.
Step 2: (2R, 3S, 4S, 5R) -2- (Benzoyloxymethyl) -5- (2-chloro-6- (3-iodobenzylamino) -9H- purin-9-yl) tetrahydrofuran -3,4-diyl dibenzoate (8)
The intermediate compound (204 mg, 0.32 mmol) and 3-iodobenzylamine hydrochloride (113 mg, 0.41 mmol) prepared in the above step 1 were dissolved in anhydrous ethanol (5 mL) under a nitrogen atmosphere, triethylamine (0.13 mL, 0.96 mmol) is stirred at room temperature for 24 hours. After confirming the completion of the reaction, the reaction solution was concentrated under reduced pressure, and the obtained residue was separated by column chromatography to obtain the intermediate compound (2R, 3S, 4S, 5R) -2- (benzoyloxymethyl) (3-iodobenzylamino) -9H-purin-9-yl) tetrahydrofuran-3,4-diyldibenzoate (230 mg, 86.14%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CDCl 3 ) δ ppm 4.71-4.90 (m, 5H), 6.13-6.17 (m, 2H), 6.33 (.. Br s, 1H), 6.43-6.44 (d, J = 4.89 Hz (M, 4H), 7.31-7.33 (m, 6H), 7.33-7.46 (m, 6H) 7.70-7.71 (t, J = 1.46 Hz, 1H), 7.88 (s, 1H), 7.94-7.96 (m, 2H), 7.99-8.01 (m, 2H), 8.07-8.09 (m, 2H); 13 C NMR (125 MHz; CDCl 3) δ 43.91, 63.79, 71.56, 74.43, 80.97, 86.40, 94.49, 119.07, 127.14, 128.40, 128.52 (3), 128.62 (2), 128.71, 129.32, 129.68 (3), 129.86 (2), 129.93 (2), 130.39 (2), 133.41, 133.69, 133.78, 136.72, 136.80, 138.39, 140.20, 150.05, 155.00, 165.17, 165.31, 166.11; mp = 80-84 [deg.] C.
Step 3: ((3aR, 4R, 6R, 6aR) -6- (2-Chloro-6- (3-iodobenzylamino) -9H- purin-9- yl) -2,2- dimethyltetrahydrofur [3,4-d] [1,3] dioxol-4-yl) methanol (9)
The intermediate compound (20 g, 24.09 mmol) prepared in the above step 2 was dissolved in methanolic ammonia (1 L) and stirred at room temperature for 3 days. The reaction mixture was concentrated under reduced pressure to obtain a triol intermediate. The triol intermediate thus obtained (20 g, 38.63 mmol) was dissolved in anhydrous acetone (400 mL), and 2,2-dimethoxypropane (23.68 mL, 193.15 mmol) and p-toluenesulfonic acid monohydrate (7.34 g, 38.63 mmol) was added dropwise thereto, followed by stirring at room temperature for 12 hours. After confirming the completion of the reaction, saturated sodium hydrogencarbonate solution (400 mL) was added thereto. The reaction mixture was concentrated under reduced pressure. The organic layer was extracted with chloroform (4 x 250 mL), washed with a saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. The reaction mixture was concentrated under reduced pressure, and the obtained residue was then separated by column chromatography to obtain the intermediate compound ((3aR, 4R, 6R, 6aR) -6- (2-Chloro-6- (3-iodobenzylamino) Yl] -2,2-dimethyltetrahydrofuro [3,4-d] [1,3] dioxol-4-yl) methanol (12 g, 89.35%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CDCl 3 )? Ppm 1.36 (s, 3H), 1.62 (s, 3H), 3.77-3.80 (dd, J = 12.71, 1.95 Hz, 1H), 3.95-3.98 12.71, 1.95 Hz, 1H), 4.48-4.49 (d, J = 1.46 Hz, 1H), 4.68 (br. s., 1H, exchangeable with d 2 O, OH), 4.74 (br. s., 2H), (D, J = 5.86, 1.46 Hz, 1H), 5.15-5.17 (t, J = 5.38 Hz, 1H), 5.77-5.78 (d, J = 4.40 Hz, 1H), 6.81 (br s. , 1H, exchangeable with d 2 O, NH), 7.03-7.06 (t, J = 7.82 Hz, 1H), 7.30-7.31 (d, J = 7.33 Hz, 1H), 7.59-7.61 (d, J = 7.82 Hz , & Lt; / RTI & gt; 1H), 7.67 (s, 1H), 7.70 (s, 1H); 13 C NMR (125 MHz; CDCl 3) [delta] 25.26, 27.63, 43.93, 63.37, 81.52, 82.98, 86.12, 93.89, 94.55, 114.18, 120.09, 127.19, 130.44, 136.86 (2), 139.93, 140.01, 148.80, 154.50, 155.14; mp = 82-86 [deg.] C.
Step 4: (2S, 5R) -5- (2-Chloro-6- (3-iodobenzylamino) -9H- purin-9- yl) -3,4- dihydroxy- -2-carboxamide & lt; / RTI & gt; (10)
The intermediate compound (15 g, 26.89 mmol) prepared in step 3 was dissolved in a solution of acetonitrile-water (130 mL, 1: 1) and then (diacetoxy iodo) -benzene (19 g, 59.16 mmol) 2,2,6,6-Tetramethyl 1-piperidinyloxyl (840 mg, 5.37 mmol) was added dropwise, followed by stirring at room temperature for 4 hours. After confirming the completion of the reaction, the reaction solution was concentrated under reduced pressure to obtain an acid intermediate without purification. The obtained intermediate (15 g, 26.23 mmol) was dissolved in anhydrous ethanol (500 mL) under a nitrogen stream, cooled to 0 ° C, thionyl chloride (9.52 mL, 131.17 mmol) was slowly added dropwise and the mixture was stirred at room temperature for 12 hours. After confirming the completion of the reaction, the reaction solution was concentrated under reduced pressure to obtain an ethyl ester intermediate without purification. Methylamine (750 mL, 2 N THF solution) was added dropwise to the resulting ethyl ester intermediate (15.5 g, 25.84 mmol) and the mixture was stirred at room temperature for 12 hours. After confirming the completion of the reaction, the reaction mixture was concentrated under reduced pressure. The obtained residue was purified by column chromatography to obtain the intermediate compound (2S, 5R) -5- (2-Chloro-6- (3- -9-yl) -3,4-dihydroxy-N-methyltetrahydrofuran-2-carboxamide (5 g, 31.80%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; DMSO-d 6 )? Ppm 2.72-2.73 (d, J = 3.91 Hz, 3H), 4.17 (brs, 1H), 4.33 (s, 1H), 4.55-4.56 (D, J = 6.35 Hz, 1H, exchangeable with D 2 O, 2′-OH), 5.71-5.72 d, J = 3.91 Hz, 1H, exchangeable with d 2 O, 3′-OH), 5.92-5.93 (d, J = 7.33 Hz, 1H), 7.11-7.14 (t, J = 7.82 Hz, 1H), 7.35 (D, J = 6.84 Hz, 1H), 7.59-7.61 (d, J = 7.82 Hz, 1H), 7.75 (s, 1H), 8.27-8.28 exchangeable with D 2 O, NH), 8.48 (s, 1 H), 8.98-8.99 (br. t, J = 5.86 Hz, 1H, exchangeable with D 2 O, N 6 H); 13 C NMR (125 MHz; DMSO-d 6) [delta] 26.07, 43.02, 72.79, 73.42, 84.95, 88.10, 95.12, 119.46, 127.31, 130.99, 136.06, 136.51, 141.57, 142.23, 150.00, 153.44, 155.31, 170.14; mp = 207-209 [deg.] C.
Step 5: (S) -2 – ((R) -1- (2-Chloro-6- (3-iodobenzylamino) -9H- purin-9- yl) -2-hydroxyethoxy) -3 – & lt; / RTI & gt; hydroxy-N-methylpropanamide (5)
The intermediate compound (2.0 g, 3.67 mmol) prepared in step 4 was dissolved in water / methanol (210 mL, 1: 2), cooled to 0 ° C and then sodium per iodate (1.57 g, 7.34 mmol) And then stirred at the same temperature for 2 hours. After completion of the reaction was confirmed, sodium borohydride (694 mg, 18.35 mmol) was added and stirred for 1 hour. After confirming the completion of the reaction, the reaction mixture was concentrated under reduced pressure, and the residue was concentrated under reduced pressure using toluene (3 x 50 mL). The residue was separated by column chromatography to obtain the title compound (1.58 g, 79%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; DMSO-d 6 ) δ ppm 2.40 (.. Br s, 3H), 3.53-3.60 (m, 1H), 3.71-3.73 (d, J = 10.27 Hz, 1H), 3.85 (br . s., 1H), 3.95 (br. s., 2H), 4.60 (br. s., 2H), 4.98-5.00 (t, J = 5.38 Hz, 1H, exchangeable with D 2 O, OH), 5.19 -5.20 (t, J = 5.86 Hz, 1H, exchangeable with D 2 O, OH), 5.78-5.80 (t, J = 5.38 Hz, 1H), 7.10-7.13 (t, J = 7.82Hz, 1H), 7.35 -7.36 (d, J = 6.84Hz, 1H), 7.59-7.60 (d, J = 5.86 Hz, 2H, exchangeable with D 2 O, NH), 7.73 (br. s., 1H), 8.30 (s, 1H ), 8.85 (br s, 1H, exchangeable with D 2 O, NH); 13 C NMR (125 MHz; DMSO-d 6) [delta] 25.59, 42.98, 62.02, 62.25, 80.43, 84.90, 95.11, 118.57, 127.27, 130.96, 136.03, 136.45, 140.78, 142.34, 150.69, 153.53, 155.17, 169.31; HRMS (FAB) m / z calcd for C 18 H20 ClIN 6 O 4 [M + Na] + 546.0279, found 569.0162; mp = 226-229 [deg.] C.
Example 2
Preparation Example 2: Synthesis of Compound (11) ((R) -2- (1- (2-Chloro-6- (3-iodobenzylamino) -9H- purin-9-yl) -2- hydroxyethoxy) Propane-1,3-diol)
Scheme 2
The intermediate compound (230 mg, 0.27 mmol) prepared in Step 2 of Example 1 was dissolved in methanolic ammonia (25 mL) and stirred at room temperature for 3 days. The reaction mixture was concentrated under reduced pressure to obtain a triol intermediate. The obtained triol intermediate (248 mg, 0.47 mmol) was treated in the same manner as in Step 5 of Example 1 to obtain the desired compound (109 mg, 75.69%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; DMSO-d 6 )? Ppm 3.13-3.17 (m, 1H), 3.22-3.26 (m, 1H), 3.43-3.47 (m, 2H), 3.54-3.56 (Br s, 2H), 4.41-4.42 (br t, J = 5.38 Hz, 1H, exchangeable with D 2 O, OH), 4.60 , J = 5.38 Hz, 1H, exchangeable with D 2 O, OH), 5.13 (br. s., 1H, exchangeable with D 2 O, OH), 5.80-5.82 (t, J = 4.89 Hz, 1H), 7.11 (D, J = 7.33 Hz, 1H), 7.36-7.37 (d, J = 7.33 Hz, 1H), 7.59-7.60 s, 1 H), 8.82 (br s, 1H, exchangeable with D 2 O, NH); 13 C NMR (125 MHz; DMSO-d 6) [delta] 43.01, 61.12, 61.23, 62.64, 80.90, 84.53, 95.12, 118.56, 127.36, 130.99, 136.04, 136.58, 140.68, 142.44, 150.73, 153.40, 155.12; HRMS (FAB) m / z calcd for C 17 H 19 ClIN 5 O 4 [M + Na] + 519.0170, found 542.0054; mp = 170-172 [deg.] C.
Example 3
Preparation Example 3: Synthesis of Compound (12) ((S) -3-Hydroxy-2 – ((R) -2-hydroxy- 1- (6- (3-iodobenzylamino) -9H- Yl) ethoxy) -N-methylpropanamide & lt; / RTI & gt;
Scheme 3
Step 1: ((3aR, 4R, 6R, 6aR) -6- (6-Chloro-9H- purin-9- yl) -2,2- dimethyltetrahydrofuro [3,4 d] [1,3 ] Dioxol-4-yl) methanol (14)
(Hydroxymethyl) tetrahydrofuran-3,4-diol (4.8 g, 16.74 mmol) and 2,2 & lt; RTI ID = 0.0 & -Dimethoxypropane (10.26 mL, 83.71 mmol) was dissolved in anhydrous acetone (120 mL) under a nitrogen stream, p-toluenesulfonic acid monohydrate (3.18 g, 16.74 mmol) was added dropwise and the mixture was stirred at room temperature for 4 hours . After confirming the completion of the reaction, the reaction is terminated with a saturated sodium hydrogencarbonate solution. The reaction solution was concentrated under reduced pressure, and the organic layer was extracted with chloroform (4 x 20 mL), washed with a saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. After concentration under reduced pressure, the obtained residue was separated by column chromatography to obtain the intermediate compound ((3aR, 4R, 6R, 6aR) -6- (6-Chloro-9H-purin-9- 3,4-d] [1,3] dioxol-4-yl) methanol (4.87 g, 89.03%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CDCl 3 )? Ppm 1.38 (s, 3H), 1.65 (s, 3H), 3.80-3.83 (dd, J = 12.22, 1.46 Hz, 1H), 3.95-3.98 (Dd, J = 5.86, 1.46 Hz, 1H), 5.19 (d, J = 8.6 Hz, 1H), 4.53-4.55 5.21 (dd, J = 5.86, 4.40 Hz, 1H), 5.99-6.00 (d, J = 4.89 Hz, 1H), 8.25 (s, 1H), 8.75 (s, 1H); 13 C NMR (125 MHz; CDCl 3 )? 25.22, 27.55, 63.22, 81.51, 83.35, 86.43, 94.02, 114.51, 133.25, 144.73, 150.50, 151.71, 152.31; mp = 146-150 [deg.] C.
Step 2: ((3aR, 4R, 6R, 6aR) -6- (6-Chloro-9H-purin-9- yl) -2,2- dimethyltetrahydrofuro [3,4- d] 3] dioxol-4-yl) methyl benzoate (15)
The intermediate compound (2.8 g, 8.56 mmol) prepared in Step 1 was dissolved in anhydrous methylene chloride (100 mL), and then cooled to 0 ° C. Triethylamine (3.6 mL, 25.70 mmol) and dimethylaminopyridine (21 mg, 0.17 mmol). Benzoyl chloride (1.5 mL, 12.85 mmol) is slowly added dropwise at the same temperature and then stirred at room temperature for 2 hours. After confirming the completion of the reaction, the reaction is terminated with a saturated sodium hydrogencarbonate solution. The reaction solution was concentrated under reduced pressure, the organic layer was extracted with methylene chloride, washed with a saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. After concentration under reduced pressure, the obtained residue was separated by column chromatography to obtain the intermediate compound ((3aR, 4R, 6R, 6aR) -6- (6-Chloro-9H-purin-9- 3,4-d] [1,3] dioxol-4-yl) methyl benzoate (3.68 g, 99.72%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CDCl 3 ) δ ppm 1.40 (s, 3H), 1.62 (s, 3H), 4.42-4.46 (dd, J = 11.73, 3.9 Hz, 1H), 4.61-4.64 (m, 2H) (D, J = 7.33 Hz, 2H), 5.51-5.13 (d, J = 2.93 Hz, 1H), 5.53-5.54 7.47-7.50 (t, J = 7.33 Hz, 1 H), 7.79-7.81 (d, J = 7.82 Hz, 2H), 8.21 (s, 1H), 8.64 (s, 1H); 13 C NMR (125 MHz; CDCl 3 ) δ 25.36, 27.15, 63.99, 81.42, 84.07, 85.04, 91.87, 114.92, 128.31 (2), 129.07, 129.39 (2), 132.42, 133.33, 144.10, 150.79, 151.40, 152.02 , 165.80; mp = 50-54 [deg.] C.
Step 3: ((3aR, 4R, 6R, 6aR) -6- (6- (3-Iodobenzylamino) -9H- purin- 9-yl) -2,2 dimethyltetrahydrofuro [3,4 -d] [1,3] dioxol-4-yl) methyl benzoate (16)
The intermediate compound (1.24 g, 2.87 mmol) prepared in the above step 2 was prepared in the same manner as in step 2 of Example 1 to give the intermediate compound ((3aR, 4R, 6R, 6aR) -6- (6- Yl) -2,2-dimethyltetrahydrofuro [3,4-d] [1,3] dioxol-4-yl) methyl benzoate (1.73 g, 96.11 %).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CDCl 3 )? Ppm 1.42 (s, 3H), 1.63 (s, 3H), 4.45-4.59 (m, 1H), 4.59-4.61 (m, 2H), 4.80 (br s. J = 5.38 Hz, 1H), 5.17 (d, J = 3.43 Hz, 1H), 5.58-5.59 , 7.32-7.05 (t, J = 7.33 Hz, 2H), 7.49-7.52 (t, J = = 7.33 Hz, 1 H), 7.58-7.60 (d, J = 7.33 Hz, 1 H), 7.71 (s, (br. s., 1 H); 13 C NMR (125 MHz; CDCl 3 ) δ 25.47, 27.21, 43.81, 64.35, 81.71, 84.21, 85.03, 91.38, 94.55, 114.61, 120.52, 126.85, 128.32 (3), 129.43, 129.62 (2), 130.34, 133.18 , 136.53, 139.16, 140.99, 148.68, 153.34, 154.60, 166.02; mp = 68-72 [deg.] C.
Step 4: ((2R, 3R, 4R, 5R) -3,4-Bis (tert- butyldimethylsilyloxy) -5- (6- (3- iodobenzylamino) -9H-purin- ) Tetrahydrofuran-2-yl) methyl benzoate (17)
The intermediate compound (4.93 g, 7.85 mmol) prepared in the above step 3 was dissolved in 80% acetic acid (250 mL), and the mixture was refluxed at 100 ° C for 12 hours. After completion of the reaction was confirmed, the reaction solution was concentrated under reduced pressure, toluene (4 x 50 mL) was added, and the filtrate was concentrated under reduced pressure to obtain a diol intermediate without purification. The obtained diol intermediate (8.5 g, 14.47 mmol) was dissolved in anhydrous pyridine (250 mL), followed by addition of tetrabutyldimethylsilyl triflate (TBDMSOTf) (13.3 mL, 57.88 mmol) followed by stirring at 50 ° C for 5 hours. After confirming the completion of the reaction, the reaction solution was partitioned into methylene chloride / water. The organic layer was washed with water, saturated sodium hydrogencarbonate solution and saturated saturated sodium bicarbonate solution, and then dried over anhydrous magnesium sulfate. After concentration under reduced pressure, the obtained residue was separated by column chromatography to obtain the intermediate compound ((2R, 3R, 4R, 5R) -3,4-bis (tert-butyldimethylsilyloxy) -9H-purin-9-yl) tetrahydrofuran-2-yl) methylbenzoate (4.47 g, 69.73%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CDCl 3 ) δ ppm -0.17 (s, 3H), 0.01 (s, 3H), 0.1 (s, 3H), 0.12 (s, 3H), 0.83 (s, 9H), 0.93 ( (t, J = 4.40 Hz, 1H), 4.74-4.78 (dd, J = J = 4.40 Hz, 1H), 4.82 (br s, 2H), 5.07-5.09 (t, J = 4.40 Hz, 1H), 5.88-5.89 (d, J = 7.82 Hz, 1H), 7.31-7.33 (d, J = 7.82 Hz, 1H), 7.38-7.41 (t, J = 7.82 Hz, 1H) , 7.52-7.55 (t, J = 7.82 Hz, 1H), 7.59-7.60 (d, J = 7.82 Hz, 1H), 7.72 (s, 1H), 7.84 dd, J = 8.31, 0.97 Hz, 2H), 8.32 (s, 1H); 13 C NMR (125 MHz; CDCl 3)? -0.00, 0.11, 0.26, 0.54, 30.63 (3), 34.61 (2), 49.19, 68.45, 77.09, 79.28, 87.24, 94.71, 99.46, 125.63, 131.74, 133.32 , 134.59, 135.23, 138.10, 141.41, 141.46, 144.66, 145.99, 153.87, 157.99, 159.53, 171.15; mp = 68-70 [deg.] C.
Step 5: ((2R, 3R, 4R, 5R) -3,4-Bis (tert-butyldimethylsilyloxy) -5- (6- (3- iodobenzylamino) -9H-purin- ) Tetrahydrofuran-2-yl) methanol (18)
The intermediate compound (1.28 g, 1.56 mmol) prepared in step 4 was dissolved in anhydrous methanol (100 mL), 25% sodium methoxide / methanol (15 mL) was added, and the mixture was stirred at room temperature for 12 hours. After confirming the completion of the reaction, the reaction solution was concentrated under reduced pressure, and the obtained residue was separated by column chromatography to obtain the intermediate compound ((2R, 3R, 4R, 5R) -3,4- bis (tert- butyldimethylsilyloxy) Yl) tetrahydrofuran-2-yl) methanol (960 mg, 86.48%) was obtained as a pale-yellow amorphous solid.
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CDCl 3 ) δ ppm -0.58 (s, 3H), -0.13 (s, 3H), 0.11-0.13 (d, J = 7.33 Hz, 6H), 0.74 (s, 9H), 0.95 (s, 9H), 3.68-3.71 (d, J = 12.71 Hz, 1H), 3.92-3.95 (d, J = 12.71 Hz, (D, J = 7.33, 4.40 Hz, 1H), 5.75-5.77 (d, J = 7.82 Hz, 1H), 6.39 (br s). J = 7.82 Hz, 1H), 7.30-7.32 (d, J = 7.82 Hz, 1H), 7.59-7.61 (d, J = 7.82 Hz, 1H), 7.70 (s, 1H), 7.76 (br s, 1H), 8.35 (br s, 1H); 13 C NMR (125 MHz; CDCl 3 ) δ 0.00, 1.30, 1.35, 1.38, 31.62 (3), 31.75 (3), 35.61 (2), 49.54, 68.95, 79.91, 79.96, 95.50, 96.96, 100.51, 127.37, 132.70, 136.30, 142.42, 142.57, 146.54, 146.61, 153.78, 158.46, 160.79; mp = 82-86 [deg.] C.
Step 6: (2S, 5R) -3,4-Bis (tert-butyldimethylsilyloxy) -5- (6- (3- iodobenzylamino) -9H- purin- Preparation of tetrahydrofuran-2-carboxamide (19)
The intermediate compound (450 mg, 0.63 mmol) prepared in Step 5 and pyridinium dichromate (5.47 g, 14.54 mmol) were dissolved in DMF (50 mL) under a nitrogen stream, followed by stirring at room temperature for 12 hours. After confirming completion of the reaction, the resulting solid was washed with water to obtain an acid intermediate. The obtained intermediate (450 mg, 0.62 mmol) was dissolved in anhydrous ethanol (10 mL) under a nitrogen stream, cooled to 0 ° C, thionyl chloride (0.25 mL, 3.10 mmol) was slowly added dropwise and the mixture was stirred at room temperature for 5 hours Lt; / RTI & gt; After completion of the reaction was confirmed, the reaction solution was concentrated under reduced pressure, and the residue was partitioned into ethyl acetate / water. The organic layer was washed with water and saturated aqueous sodium chloride solution, and dried over anhydrous magnesium sulfate. After concentration under reduced pressure, an intermediate ethyl ester was obtained. The ethyl ester thus obtained is added with a methylamine / 2N-THF solution under a nitrogen stream, followed by stirring at room temperature for 12 hours. After confirming the completion of the reaction, the reaction mixture was concentrated under reduced pressure and the residue was purified by column chromatography to obtain the intermediate compound (2S, 5R) -3,4-bis (tert-butyldimethylsilyloxy) -5- -9H-purin-9-yl) -N-methyltetrahydrofuran-2-carboxamide (400 mg, 85.65%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CDCl 3 ) δ ppm -0.61 (s, 3H), -0.16 (s, 3H), 0.15 (s, 3H), 0.25 (s, 3H), 0.71 (s, 9H), 0.97 (s, 9H), 2.93-2.94 (d, J = 4.40 Hz, 3H), 4.33-4.34 (d, J = 3.42 Hz, (D, J = 7.33 Hz, 1H), 6.42 (br s, 1H), 7.03-7.06 (t, J = 7.82 Hz, 1H), 7.30-7.32 ), 7.59-7.61 (d, J = 7.82 Hz, 1H), 7.70 (s, 1H), 7.75 (s, 1H), 8.36 , 1H); 13 C NMR (125 MHz; CDCl 3 ) δ 0.00, 1.19, 1.21, 1.40, 23.71, 24.00, 31.53 (3), 31.58, 31.78 (2), 35.64, 49.60, 78.09, 81.25, 92.53, 95.48, 100.56, 127.30 , 132.72, 136.34, 142.44, 142.61, 146.64, 146.79, 154.27, 158.70, 160.96, 175.92; mp = 80-84 [deg.] C.
Step 7: (2S, 5R) -3,4-Dihydroxy-5- (6- (3-iodobenzylamino) -9H- purin-9- yl) -N- methyltetrahydrofuran- Manufacture of Radiate (20)
The intermediate compound (65 mg, 0.08 mmol) prepared in Step 6 was dissolved in anhydrous THF under a nitrogen stream, and then tetrabutylammonium fluoride (TBAF) (0.44 mL, 0.43 mmol, (1 M solution THF) Stir at room temperature for 1 hour. After confirming the completion of the reaction, the reaction mixture was concentrated under reduced pressure, and the resulting residue was purified by column chromatography to obtain the intermediate compound (2S, 5R) -3,4-dihydroxy-5- (6- (3-iodobenzylamino) -9H-purin-9-yl) -N-methyltetrahydrofuran-2-carboxamide (52 mg, 95.45%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; DMSO-d 6 ) δ ppm 2.70-2.71 (d, J = 4.40 Hz, 3H), 4.14-4.16 (t, J = 3.91 Hz, 1H), 4.31 (s, 1H), 4.57 (D, J = 4.40 Hz, 1H), 4.67 (d, 1H), 5.96-5.97 (d, J = 7.33 Hz, 1H), 7.09-7.12 (t, J = 7.82 Hz, 1H), 7.35-7.36 (d, J = 7.82 Hz, 1H), 7.56-7.58 1H, J = 7.82 Hz, 1H), 7.72 (s, 1H), 8.29 (s, 1H), 8.42 (s, 1H), 8.53 (br s., 1H), 8.85-8.86 (m, 1H); 13 C NMR (125 MHz; DMSO-d 6 )? 25.81, 42.74, 72.56, 73.49, 85.09, 88.26, 95.06, 120.42, 127.11, 130.95, 135.86, 136.13, 141.17, 143.10, 148.70, 152.94, 154.86, 170.34; mp = 178-182 [deg.] C.
Step 8: (S) -3-Hydroxy-2 – ((R) -2-hydroxy-1- (6- (3-iodobenzylamino) -9H- purin- Preparation of N-methylpropanamide (12)
The intermediate compound (52 mg, 0.10 mmol) prepared in the above Step 7 was treated in the same manner as in Step 5 of Example 1 to obtain the title compound (35 mg, 83.33%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; DMSO-d 6 .) Δ ppm 2.35 (s, 3H), 3.5-3.6 (m, 1H), 3.72-3.74 (d, J = 9.29 Hz, 1H), 3.86 (br s. 2H), 4.99 (br s, 1H, exchangeable with D2O, OH), 5.21 (br. S., 1H), 4.00 (d, J = (d, J = 6.84 Hz, 1H), 7.56 d, J = 6.35 Hz, 2H, exchangeable with D 2 O, NH), 7.71 (s, 1H), 8.22 (s, 1H), 8.30 (s, 1H), 8.37 (br. s., 1H, exchangeable with D2O, NH); 13 C NMR (125 MHz; DMSO-d 6 ) δ 25.53, 42.81, 61.98, 62.26, 80.30, 84.62, 95.09, 119.43, 127.11, 130.91, 135.81, 136.16, 140.19, 143.31, 149.79, 152.98, 154.66, 169.42; HRMS (FAB) m / z calcd for C 1821 IN 6 O 4 [M + Na] +512.0669, found 535.0578; mp = 176-182 [deg.] C.
Example 4
Production Example 4: Synthesis of Compound (21) ((R) -2- (2-hydroxy-1- (6- (3-iodobenzylamino) -9H- purin- 3-diol)
Scheme 4
Step 1: ((3aR, 4R, 6R, 6aR) -6- (6- (3-Iodobenzylamino) -9H-purin-9- yl) -2,2-dimethyltetrahydrofuro [ 4-d] [1,3] dioxol-4-yl) methanol (22)
The intermediate compound (1.73 g, 2.75 mmol) prepared in the step 2 of Example 1 was treated in the same manner as in the step 5 of Example 3 with (3aR, 4R, 6R, 6aR) -6- L, 3-dioxol-4-yl) methanol (1.04 g, 93.69 & lt; RTI ID = 0.0 & gt; %).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CDCl 3 ) δ ppm 1.36 (s, 3H), 1.63 (s, 3H), 3.75-3.80 (t, J = 11.24 Hz, 1H), 3.95-3.97 (d, J = 12.71 Hz , 5.19 (br, s, 2H), 5.10-5.11 (d, J = 4.89 Hz, 1H), 5.19 = 3.91 Hz, 1H), 6.58 (br s, 2H), 7.01-7.04 (t, J = 7.82 Hz, 1H), 7.29-7.30 (d, J = 6.84 Hz, 1H), 7.58-7.59 , J = 7.33 Hz, 1H), 7.69 (br s, 2H), 8.33 (br s, 1H); 13 C NMR (125 MHz; CDCl 3 ) δ 25.24, 27.66, 29.65, 63.36, 81.68, 83.03, 86.12, 94.26, 94.54, 113.93, 121.24, 126.80, 130.32, 136.52, 136.58, 139.71, 140.72, 147.66, 152.73, 154.94 ; mp = 72-76 [deg.] C.
Step 2: (2R, 3S, 4R, 5R) -2- (hydroxymethyl) -5- (6- (3-iodobenzylamino) -9H- purin-9- yl) tetrahydrofuran- – Preparation of diol (23)
The intermediate compound (250 mg, 0.47 mmol) prepared in the above step 1 was dissolved in 80% acetic acid (250 mL), and the mixture was heated under reflux at 100 ° C for 12 hours. After confirming the completion of the reaction, the reaction solution was concentrated under reduced pressure, toluene (4 x 50 mL) was added, and the mixture was concentrated under reduced pressure. The obtained residue was purified by column chromatography to obtain the intermediate (2R, 3S, 4R, Methyl) -5- (6- (3-iodobenzylamino) -9H-purin-9-yl) tetrahydrofuran-3,4-diol (177 mg, 76.95%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; DMSO-d 6 )? Ppm 3.56 (br s, 1H), 3.67-3.69 (d, J = 10.27 Hz, 1H), 3.97 ), 4.61-4.67 (m, 3H), 5.17 (d, J = 2.93 Hz, 1H, exchangeable with D 2 O, OH), 5.35-5.36 (t, J = 5.38 Hz, 1H, exchangeable with D 2 O, OH), 5.43-5.44 (d, J = 5.38 Hz, 1H, exchangeable with d 2O, OH), 5.89-5.90 (d, J = 4.89 Hz, 1H), 7.09-7.11 (t, J = 7.33 Hz, 1H), 7.35-7.36 (d, J = 6.84 Hz, 1H), 7.56-7.58 (d, J = 7.33 Hz, 1H), 7.72 ), 8.45 (br s, 1H, exchangeable with D 2 O, NH); 13 C NMR (125 MHz; DMSO-d 6) [delta] 42.69, 62.08, 71.06, 73.97, 86.32, 88.42, 95.09, 120.24, 127.08, 130.91, 135.81, 136.16, 140.47, 143.22, 149.00, 152.76, 154.79; mp = 174-178 [deg.] C.
Step 3: (R) -2- (2-Hydroxy-1- (6- (3-iodobenzylamino) -9H-purin-9-yl) ethoxy) propane- )
The intermediate compound (77 mg, 0.15 mmol) prepared in the above Step 2 was treated in the same manner as in Step 5 of Example 1 to obtain the desired compound (62 mg, 80.51%).
The analytical data of the obtained compound are as follows.
1 H NMR (500 MHz; CD 3 OD)? Ppm 3.42 – 3.44 (d, J = 5.38 Hz, 2H), 3.54-3.58 (m, 1H), 3.65-3.68 ), 3.75-3.78 (dd, J = 11.73,4.44 Hz, 1H), 4.01-4.02 (d, J = 5.38 Hz, 2H), 4.53 (s, 2H), 6.04-6.06 J = 7.82 Hz, 1H), 7.76 (s, 1H), 7.07-7.10 (t, J = 7.82 Hz, 1H), 7.38-7.40 (d, J = 7.82 Hz, 1H), 7.59-7.60 ), 8.27 (s, 1 H), 8.29 (s, 1 H); 13 C NMR (125 MHz; CD 3 OD)? 42.88, 60.80, 61.25, 62.76, 80.26, 84.02, 93.52, 119.00, 126.44, 129.93, 135.90, 136.10, 139.65, 141.72, 148.97, 152.52, 154.53; HRMS (FAB) m / z calcd for C 17 H 20 IN 5 O 4 [M + H] +485.0560, found 486.0625; mp = 72-76 [deg.] C.

PATENT

WO 2008111082

REFERENCES

1: Avni I, Garzozi HJ, Barequet IS, Segev F, Varssano D, Sartani G, Chetrit N, Bakshi E, Zadok D, Tomkins O, Litvin G, Jacobson KA, Fishman S, Harpaz Z, Farbstein M, Yehuda SB, Silverman MH, Kerns WD, Bristol DR, Cohn I, Fishman P. Treatment of Dry Eye Syndrome with Orally Administered CF101 Data from a Phase 2 Clinical Trial. Ophthalmology. 2010 Mar 19. [Epub ahead of print] PubMed PMID: 20304499.

2: Bar-Yehuda S, Rath-Wolfson L, Del Valle L, Ochaion A, Cohen S, Patoka R, Zozulya G, Barer F, Atar E, Piña-Oviedo S, Perez-Liz G, Castel D, Fishman P. Induction of an antiinflammatory effect and prevention of cartilage damage in rat knee osteoarthritis by CF101 treatment. Arthritis Rheum. 2009 Oct;60(10):3061-71. PubMed PMID: 19790055.

3: Borea PA, Gessi S, Bar-Yehuda S, Fishman P. A3 adenosine receptor: pharmacology and role in disease. Handb Exp Pharmacol. 2009;(193):297-327. Review. PubMed PMID: 19639286.

4: Moral MA, Tomillero A. Gateways to clinical trials. Methods Find Exp Clin Pharmacol. 2008 Mar;30(2):149-71. PubMed PMID: 18560631.

5: Silverman MH, Strand V, Markovits D, Nahir M, Reitblat T, Molad Y, Rosner I, Rozenbaum M, Mader R, Adawi M, Caspi D, Tishler M, Langevitz P, Rubinow A, Friedman J, Green L, Tanay A, Ochaion A, Cohen S, Kerns WD, Cohn I, Fishman-Furman S, Farbstein M, Yehuda SB, Fishman P. Clinical evidence for utilization of the A3 adenosine receptor as a target to treat rheumatoid arthritis: data from a phase II clinical trial. J Rheumatol. 2008 Jan;35(1):41-8. Epub 2007 Nov 15. PubMed PMID: 18050382

/////////////CF 101, Piclidenoson, CF101, CF-101, CF 101, ALB-7208,  ALB 7208, ALB7208,  IB MECA, Phase III,  Plaque psoriasis, Rheumatoid arthritis, UNII-30679UMI0N, Пиклиденозон بيكليدينوسون 匹利诺生 , Can-Fite BioPharma

CNC(=O)[C@H]1O[C@H]([C@H](O)[C@@H]1O)N1C=NC2=C(NCC3=CC(I)=CC=C3)N=CN=C12

Esaxerenone エサキセレノン , эсаксеренон , إيساكسيرينون , 艾沙利 酮 ,


Esaxerenone.svg

1632006-28-0.png

ChemSpider 2D Image | esaxerenone | C22H21F3N2O4S

img

Esaxerenone

エサキセレノン , эсаксеренон إيساكسيرينون 艾沙利  酮 

CS-3150XL-550

Formula
C22H21F3N2O4S
CAS
1632006-28-0
Mol weight
466.4734

Pmda approved japan, 2019/1/8, Minebro

Antihypertensive, Aldosterone antagonist

N62TGJ04A1
UNII:N62TGJ04A1
эсаксеренон [Russian] [INN]
إيساكسيرينون [Arabic] [INN]
艾沙利酮 [Chinese] [INN]
1-(2-Hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide
10230
1632006-28-0 [RN], 880780-76-7, 1072195-82-4 (+ isomer)   1072195-83-5 (- isomer)
1H-Pyrrole-3-carboxamide, 1-(2-hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-
  • Originator X-Ceptor Therapeutics
  • Developer Daiichi Sankyo Company
  • Class Antihyperglycaemics; Antihypertensives; Pyrroles; Small molecules; Sulfones
  • Mechanism of Action Mineralocorticoid receptor antagonists
  • Registered Hypertension
  • Phase III Diabetic nephropathies
  • No development reported Cardiovascular disorders; Heart failure
  • 09 Jan 2019 Registered for Hypertension in Japan (PO) – First global approval
  • 27 Nov 2018 Daiichi Sankyo completes a phase III trial in Diabetic nephropathies in Japan (PO) (JapicCTI-173696)
  • 08 Jun 2018 Efficacy and adverse events data from the phase III ESAX-HTN trial in Essential hypertension presented 28th European Meeting on Hypertension and Cardiovascular Protection (ESH-2018)

CS 3150, angiotensin II receptor antagonist,  for the treatment or prevention of such hypertension and heart disease similar to olmesartan , losartan, candesartan , valsartan,  irbesartan,  telmisartan, eprosartan,

 Cas name 1H-Pyrrole-3-carboxamide, 1-(2-hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-, (5S)-

CAS 1632006-28-0 for S conf

MF C22 H21 F3 N2 O4 S

MW 466.47

(S)-1-(2-hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide

CAS 1632006-28-0 for S configuration

1- (2-hydroxyethyl) -4-methyl -N- [4- (methylsulfonyl) phenyl] -5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxamide

(S) -1- (2- hydroxyethyl) -4-methyl -N- [4- (methylsulfonyl) phenyl] -5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxamide

(+/-)-1-(2-hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide, CAS 880780-76-7

(+)-1-(2-hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide..1072195-82-4

(-)-1-(2-hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide..1072195-83-5

How to synthesis Esaxerenone 1632006-28-0 – YouTube

Oct 31, 2018 – Uploaded by EOS Med Chem

Esaxerenone 1632006-28-0, FDA approved new drug will be a big potential drug. Original Route of Synthesis …

Esaxerenone, also known as CS-3150, XL-550, is a nonsteroidal antimineralocorticoid which was discovered by Exelixis and is now under development by Daiichi Sankyo Company for the treatment of hypertension, essential hypertension, hyperaldosteronism, and diabetic nephropathies. It acts as a highly selective silent antagonist of the mineralocorticoid receptor (MR), the receptor for aldosterone, with greater than 1,000-fold selectivity for this receptor over other steroid hormone receptors, and 4-fold and 76-fold higher affinity for the MR relative to the existing antimineralocorticoids spironolactone and eplerenone.
Image result for Esaxerenone SYNTHESIS

Esaxerenone (INN) (developmental code names CS-3150XL-550) is a nonsteroidal antimineralocorticoid which was discovered by Exelixis and is now under development by Daiichi Sankyo Company for the treatment of hypertensionessential hypertensionhyperaldosteronism, and diabetic nephropathies.[1][2][3] It acts as a highly selective silent antagonist of the mineralocorticoid receptor(MR), the receptor for aldosterone, with greater than 1,000-fold selectivity for this receptor over other steroid hormone receptors, and 4-fold and 76-fold higher affinity for the MR relative to the existing antimineralocorticoids spironolactone and eplerenone.[1][2][3] As of 2017, esaxerenone is in phase III clinical trials for hypertension, essential hypertension, and hyperaldosteronism and is in phase IIclinical trials for diabetic nephropathies.[1]

  • Mechanism of Action Mineralocorticoid receptor antagonists 

JAPAN PHASE 2……….Phase 2 Study to Evaluate Efficacy and Safety of CS-3150 in Patients with Essential Hypertension

http://www.clinicaltrials.jp/user/showCteDetailE.jsp?japicId=JapicCTI-121921

Phase II Diabetic nephropathies; Hypertension

  • 01 Jan 2015 Daiichi Sankyo initiates a phase IIb trial for Diabetic nephropathies in Japan (NCT02345057)
  • 01 Jan 2015 Daiichi Sankyo initiates a phase IIb trial for Hypertension in Japan (NCT02345044)
  • 01 May 2013 Phase-II clinical trials in Diabetic nephropathies in Japan (PO)
  •  Currently, angiotensin II receptor antagonists and calcium antagonists are widely used as a medicament for the treatment or prevention of such hypertension or heart disease.
     Mineralocorticoid receptor (MR) (aldosterone receptor) has been known to play an important role in the control of body electrolyte balance and blood pressure, spironolactone having a steroid structure, MR antagonists such as eplerenone, are known to be useful in the treatment of hypertension-heart failure.
     Renin – angiotensin II receptor antagonists are inhibitors of angiotensin system is particularly effective in renin-dependent hypertension, and show a protective effect against cardiovascular and renal failure. Also, the calcium antagonists, and by the function of the calcium channel antagonizes (inhibits), since it has a natriuretic action in addition to the vasodilating action, is effective for hypertension fluid retention properties (renin-independent) .
     Therefore, the MR antagonist, when combined angiotensin II receptor antagonists or calcium antagonists, it is possible to suppress the genesis of multiple hypertension simultaneously, therapeutic or prophylactic effect of the stable and sufficient hypertension irrespective of the etiology is expected to exhibit.
     Also, diuretics are widely used as a medicament for the treatment or prevention of such hypertension or heart disease. Diuretic agent is effective in the treatment of hypertension from its diuretic effect. Therefore, if used in combination MR antagonists and diuretics, the diuretic effect of diuretics, it is possible to suppress the genesis of multiple blood pressure at the same time, shows a therapeutic or prophylactic effect of the stable and sufficient hypertension irrespective of the etiology it is expected.
     1- (2-hydroxyethyl) -4-methyl -N- [4- (methylsulfonyl) phenyl] -5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxamide (hereinafter, compound ( I)) is, it is disclosed in Patent Documents 1 and 2, hypertension, for the treatment of such diabetic nephropathy are known to be useful.

CS-3150 (XL550) is a small-molecule antagonist of the mineralocorticoid receptor (MR), a nuclear hormone receptor implicated in a variety of cardiovascular and metabolic diseases. MR antagonists can be used to treat hypertension and congestive heart failure due to their vascular protective effects. Recent studies have also shown beneficial effects of adding MR antagonists to the treatment regimen for Type II diabetic patients with nephropathy. CS-3150 is a non-steroidal, selective MR antagonist that has the potential for the treatment of hypertension, congestive heart failure, or end organ protection due to vascular damage.

Useful as a mineralocorticoid receptor (MR) antagonist, for treating hypertension, cardiac failure and diabetic nephropathy. It is likely to be CS-3150, a non-steroidal MR antagonist, being developed by Daiichi Sankyo (formerly Sankyo), under license from Exelixis, for treating hypertension and diabetic nephropathy (phase 2 clinical, as of March 2015). In January 2015, a phase II trial for type 2 diabetes mellitus and microalbuminuria was planned to be initiated later that month (NCT02345057).

Exelixis discovered CS-3150 and out-licensed the compound to Daiichi-Sankyo. Two phase 2a clinical trials, one in hypertensive patients and the other in type 2 diabetes with albuminuria, are currently being conducted in Japan by Daiichi-Sankyo.

Mineralocorticoid receptor (MR) (aldosterone receptor) has been known to play an important role in the control of body electrolyte balance and blood pressure, spironolactone having a steroid structure, MR antagonists such as eplerenone, are known to be useful in the treatment of hypertension-heart failure.

CS-3150 (XL550) is a small-molecule antagonist of the mineralocorticoid receptor (MR), a nuclear hormone receptor implicated in a variety of cardiovascular and metabolic diseases. MR antagonists can be used to treat hypertension and congestive heart failure due to their vascular protective effects. Recent studies have also shown beneficial effects of adding MR antagonists to the treatment regimen for Type II diabetic patients with nephropathy. CS-3150 is a non-steroidal, selective MR antagonist that has the potential for the treatment of hypertension, congestive heart failure, or end organ protection due to vascular damage.

Exelixis discovered CS-3150 and out-licensed the compound to Daiichi-Sankyo. Two phase 2a clinical trials, one in hypertensive patients and the other in type 2 diabetes with albuminuria, are currently being conducted in Japan by Daiichi-Sankyo.

Daiichi Sankyo (formerly Sankyo), under license from Exelixis, is developing CS-3150 (XL-550), a non-steroidal mineralocorticoid receptor (MR) antagonist, for the potential oral treatment of hypertension and diabetic nephropathy, microalbuminuria ,  By October 2012, phase II development had begun ; in May 2014, the drug was listed as being in phase IIb development . In January 2015, a phase II trial for type 2 diabetes mellitus and microalbuminuria was planned to be initiated later that month. At that time, the trial was expected to complete in March 2017 .

Exelixis, following its acquisition of X-Ceptor Therapeutics in October 2004 , was investigating the agent for the potential treatment of metabolic disorders and cardiovascular diseases, such as hypertension and congestive heart failure . In September 2004, Exelixis expected to file an IND in 2006. However, it appears that the company had fully outlicensed the agent to Sankyo since March 2006 .

Description Small molecule antagonist of the mineralocorticoid receptor (MR)
Molecular Target Mineralocorticoid receptor
Mechanism of Action Mineralocorticoid receptor antagonist
Therapeutic Modality Small molecule

In January 2015, a multi-center, placebo-controlled, randomized, 5-parallel group, double-blind, phase II trial (JapicCTI-152774;  NCT02345057; CS3150-B-J204) was planned to be initiated later that month in Japan, in patients with type 2 diabetes mellitus and microalbuminuria, to assess the efficacy and safety of different doses of CS-3150 compared to placebo. At that time, the trial was expected to complete in March 2017; later that month, the trial was initiated in the Japan

By October 2012, phase II development had begun in patients with essential hypertension

By January 2011, phase I trials had commenced in Japan

Several patents WO-2014168103,

WO-2015012205 and WO-2015030010

XL-550, claimed in WO-2006012642,

PATENT

http://www.google.co.in/patents/EP2133330A1?cl=en

(Example 3)(+/-)-1-(2-hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide

  • After methyl 4-methyl-5-[2-(trifluoromethyl) phenyl]-1H-pyrrole-3-carboxylate was obtained by the method described in Example 16 of WO 2006/012642 , the following reaction was performed using this compound as a raw material.
  • Methyl 4-methyl-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxylate (1.4 g, 4.9 mmol) was dissolved in methanol (12 mL), and a 5 M aqueous sodium hydroxide solution (10 mL) was added thereto, and the resulting mixture was heated under reflux for 3 hours. After the mixture was cooled to room temperature, formic acid (5 mL) was added thereto to stop the reaction. After the mixture was concentrated under reduced pressure, water (10 mL) was added thereto to suspend the resulting residue. The precipitated solid was collected by filtration and washed 3 times with water. The obtained solid was dried under reduced pressure, whereby 4-methyl-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxylic acid (1.1 g, 83%) was obtained as a solid. The thus obtained solid was suspended in dichloromethane (10 mL), oxalyl chloride (0.86 mL, 10 mmol) was added thereto, and the resulting mixture was stirred at room temperature for 2 hours. After the mixture was concentrated under reduced pressure, the residue was dissolved in tetrahydrofuran (10 mL), and 4-(methylsulfonyl)aniline hydrochloride (1.0 g, 4.9 mmol) and N,N-diisopropylethylamine (2.8 mL, 16 mmol) were sequentially added to the solution, and the resulting mixture was heated under reflux for 18 hours. After the mixture was cooled to room temperature, the solvent was distilled off under reduced pressure, and acetonitrile (10 mL) and 3 M hydrochloric acid (100 mL) were added to the residue. A precipitated solid was triturated, collected by filtration and washed with water, and then, dried under reduced pressure, whereby 4-methyl-N-[4-(methylsulfonyl) phenyl]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide (1.4 g, 89%) was obtained as a solid.
    1H-NMR (400 MHz, DMSO-d6) δ11.34 (1H, brs,), 9.89 (1H, s), 7.97 (2H, d, J = 6.6 Hz), 7.87-7.81 (3H, m), 7.73 (1H, t, J = 7.4 Hz), 7.65-7.61 (2H, m), 7.44 (1H, d, J = 7.8 Hz), 3.15 (3H, s), 2.01 (3H, s).
  • Sodium hydride (0.12 g, 3 mmol, 60% dispersion in mineral oil) was dissolved in N,N-dimethylformamide (1.5 mL), and 4-methyl -N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide (0.47 g, 1.1 mmol) was added thereto, and then, the resulting mixture was stirred at room temperature for 30 minutes. Then, 1,3,2-dioxathiolane-2,2-dioxide (0.14 g, 1.2 mmol) was added thereto, and the resulting mixture was stirred at room temperature. After 1 hour, sodium hydride (40 mg, 1.0 mmol, oily, 60%) was added thereto again, and the resulting mixture was stirred for 30 minutes. Then, 1,3,2-dioxathiolane-2,2-dioxide (12 mg, 0.11 mmol) was added thereto, and the resulting mixture was stirred at room temperature for 1 hour. After the mixture was concentrated under reduced pressure, methanol (5 mL) was added to the residue and insoluble substances were removed by filtration, and the filtrate was concentrated again. To the residue, tetrahydrofuran (2 mL) and 6 M hydrochloric acid (2 mL) were added, and the resulting mixture was stirred at 60°C for 16 hours. The reaction was cooled to room temperature, and then dissolved in ethyl acetate, and washed with water and saturated saline. The organic layer was dried over anhydrous sodium sulfate and filtered. Then, the filtrate was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate), whereby the objective compound (0.25 g, 48%) was obtained.
    1H-NMR (400 MHz, CDCl3) δ: 7.89-7.79 (m, 6H), 7.66-7.58 (m, 2H), 7.49 (s, 1H), 7.36 (d, 1H, J = 7.4Hz), 3.81-3.63 (m, 4H), 3.05 (s, 3H), 2.08 (s, 3H).
    HR-MS (ESI) calcd for C22H22F3N2O4S [M+H]+, required m/z: 467.1252, found: 467.1246.
    Anal. calcd for C22H21F3N2O4S: C, 56.65; H, 4.54; N, 6.01; F, 12.22; S, 6.87. found: C, 56.39; H, 4.58; N, 5.99; F, 12.72; S, 6.92.

(Example 4)

Optical Resolution of Compound of Example 3

  • Resolution was performed 4 times in the same manner as in Example 2, whereby 74 mg of Isomer C was obtained as a solid from a fraction containing Isomer C (tR = 10 min), and 71 mg of Isomer D was obtained as a solid from a fraction containing Isomer D (tR = 11 min).
  • Isomer C: (+)-1-(2-hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide
    [α]D 21: +7.1° (c = 1.0, EtOH) .
    1H-NMR (400 MHz, CDCl3) δ: 7.91 (s, 1H), 7.87-7.79 (m, 5H), 7.67-7.58 (m, 2H), 7.51 (s, 1H), 7.35 (d, 1H, J = 7.0 Hz), 3.78-3.65 (m, 4H), 3.05 (s, 3H), 2.07 (s, 3H).
    HR-MS (ESI) calcd for C22H22F3N2O4S [M+H]+, required m/z: 467.1252, found: 467.1260.
    Retention time: 4.0 min.
  • Isomer D: (-)-1-(2-hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)phenyl]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide
    [α]D 21: -7.2° (c = 1.1, EtOH) .
    1H-NMR (400 MHz, CDCl3) δ: 7.88-7.79 (m, 6H), 7.67-7.58 (m, 2H), 7.50 (s, 1H), 7.36 (d, 1H, J = 7.5 Hz), 3.79-3.65 (m, 4H), 3.05 (s, 3H), 2.08 (s, 3H).
    HR-MS (ESI) calcd for C22H22F3N2O4S [M+H]+, required m/z: 467.1252, found: 467.1257.
    Retention time: 4.5 min.

……………………………………………….

WO 2014168103

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2014168103

 Step B: pyrrole derivative compounds (A ‘)
[Of 16]
(Example 1) 2-bromo-1- [2- (trifluoromethyl) phenyl] propan-1-one
[Of 19]
 1- [2- (trifluoromethyl) phenyl] propan-1-one 75 g (370 mmol) in t- butyl methyl ether (750 mL), and I was added bromine 1.18 g (7.4 mmol). After confirming that the stirred bromine color about 30 minutes at 15 ~ 30 ℃ disappears, cooled to 0 ~ 5 ℃, was stirred with bromine 59.13 g (370 mmol) while keeping the 0 ~ 10 ℃. After stirring for about 2.5 hours, was added while maintaining 10 w / v% aqueous potassium carbonate solution (300 mL) to 0 ~ 25 ℃, was further added sodium sulfite (7.5 g), was heated to 20 ~ 30 ℃. The solution was separated, washed in the resulting organic layer was added water (225 mL), to give t- butyl methyl ether solution of the title compound and the organic layer was concentrated under reduced pressure (225 mL).
 1 H NMR (400 MHz, CDCl 3 ) delta: 1.91 (3H, D, J = 4.0 Hz), 4.97 (1H, Q, J = 6.7 Hz), 7.60 ~ 7.74 (4H, M).
(Example 2) 2-cyano-3-methyl-4-oxo-4- [2- (trifluoromethyl) phenyl] butanoate
[Of 20]
 2-bromo-1- [2- (trifluoromethyl) phenyl] propan-1 / t- butyl methyl ether solution (220 mL) in dimethylacetamide (367 mL), ethyl cyanoacetate obtained in Example 1 53.39 g (472 mmol), potassium carbonate 60.26 g (436 mmol) were sequentially added, and the mixture was stirred and heated to 45 ~ 55 ℃. After stirring for about 2 hours, 20 is cooled to ~ 30 ℃, water (734 mL) and then extracted by addition of toluene (367 mL), washed by adding water (513 mL) was carried out in the organic layer (2 times implementation). The resulting organic layer was concentrated under reduced pressure to obtain a toluene solution of the title compound (220 mL).
 1 H NMR (400 MHz, CDCl 3 ) delta: 1.33 ~ 1.38 (6H, M), 3.80 ~ 3.93 (2H, M), 4.28 ~ 4.33 (2H, M), 7.58 ~ 7.79 (4H, M).
(Example 3) 2-chloro-4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylic acid ethyl
[Of 21]
 The 20 ~ 30 ℃ 2-cyano-3-methyl-4-oxo-4 was obtained [2- (trifluoromethyl) phenyl] butanoate in toluene (217 mL) by the method of Example 2 ethyl acetate (362 mL) Te, after the addition of thionyl chloride 42.59 g (358 mmol), cooled to -10 ~ 5 ℃, was blown hydrochloric acid gas 52.21 g (1432 mmol), further concentrated sulfuric acid 17.83 g (179 mmol) was added, and the mixture was stirred with hot 15 ~ 30 ℃. After stirring for about 20 hours, added ethyl acetate (1086 mL), warmed to 30 ~ 40 ℃, after the addition of water (362 mL), and the layers were separated. after it separated organic layer water (362 mL) was added for liquid separation, and further 5w / v% was added for liquid separation aqueous sodium hydrogen carbonate solution (362 mL).
 Subsequently the organic layer was concentrated under reduced pressure, the mixture was concentrated under reduced pressure further added toluene (579 mL), was added toluene (72 mL), and cooled to 0 ~ 5 ℃. After stirring for about 2 hours, the precipitated crystals were filtered, and washed the crystals with toluene which was cooled to 0 ~ 5 ℃ (217 mL). The resulting wet goods crystals were dried under reduced pressure at 40 ℃, the title compound was obtained (97.55 g, 82.1% yield).
 1 H NMR (400 MHz, CDCl 3 ) delta: 1.38 (3H, t, J = 7.1 Hz), 2.11 (3H, s), 4.32 (2H, Q, J = 7.1 Hz), 7.39 (1H, D, J = 7.3 Hz), 7.50 ~ 7.62 (2H, m), 7.77 (1H, d, J = 8.0 Hz), 8.31 (1H, br).
(Example 4) 4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylic acid ethyl
[Of 22]
 Example obtained by the production method of the three 2-chloro-4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylate 97.32 g (293 mmol) in ethanol (662 mL), tetrahydrofuran (117 mL), water (49 mL), sodium formate 25.91 g (381 mmol) and 5% palladium – carbon catalyst (water content 52.1%, 10.16 g) was added at room temperature, heated to 55 ~ 65 ℃ the mixture was stirred. After stirring for about 1 hour, cooled to 40 ℃ less, tetrahydrofuran (97 mL) and filter aid (KC- flock, Nippon Paper Industries) 4.87 g was added, the catalyst was filtered and the residue using ethanol (389 mL) was washed. The combined ethanol solution was used for washing the filtrate after concentration under reduced pressure, and with the addition of water (778 mL) was stirred for 0.5 hours at 20 ~ 30 ℃. The precipitated crystals were filtered, and washed the crystals with ethanol / water = 7/8 solution was mixed with (292 mL). The resulting wet goods crystals were dried under reduced pressure at 40 ℃, the title compound was obtained (86.23 g, 98.9% yield).
 1 H NMR (400 MHz, CDCl 3 ) delta: 1.35 (3H, t, J = 7.1 Hz), 2.18 (3H, s), 4.29 (2H, M), 7.40 ~ 7.61 (4H, M), 7.77 (1H, d, J = 7.9 Hz), 8.39 (1H, br).
(Example 5) (RS) -1- (2- hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylic acid ethyl
[Of 23]
 N to the fourth embodiment of the manufacturing method by the resulting 4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylate 65.15 g (219 mmol), N- dimethylacetamide ( 261 mL), ethylene carbonate 28.95 g (328.7 mmol), 4- dimethylaminopyridine 2.68 g (21.9 mmol) were sequentially added at room temperature, and heated to 105 ~ 120 ℃, and the mixture was stirred. After stirring for about 10 hours, toluene was cooled to 20 ~ 30 ℃ (1303 mL), and the organic layer was extracted by adding water (326 mL). Subsequently, was washed by adding water (326 mL) to the organic layer (three times). The resulting organic layer was concentrated under reduced pressure, ethanol (652 mL) was added, and was further concentrated under reduced pressure, ethanol (130 mL) was added to obtain an ethanol solution of the title compound (326 mL).
 1 H NMR (400 MHz, CDCl 3 ) delta: 1.35 (3H, t, J = 7.1 Hz), 1.84 (1H, Broad singlet), 2.00 (3H, s), 3.63 ~ 3.77 (4H, M), 4.27 (2H , m), 7.35 ~ 7.79 (5H, m).
(Example 6) (RS) -1- (2- hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylic acid
[Of 24]
 Obtained by the method of Example 5 (RS) -1- (2- hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylic acid ethyl / ethanol (321 mL) solution in water (128.6 mL), was added at room temperature sodium hydroxide 21.4 g (519 mmol), and stirred with heating to 65 ~ 78 ℃. After stirring for about 6 hours, cooled to 20 ~ 30 ℃, after the addition of water (193 mL), and was adjusted to pH 5.5 ~ 6.5, while maintaining the 20 ~ 30 ℃ using 6 N hydrochloric acid. was added as seed crystals to the pH adjustment by a liquid (RS) -1- (2- hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylic acid 6.4 mg , even I was added to water (193mL). Then cooled to 0 ~ 5 ℃, again, adjusted to pH 3 ~ 4 with concentrated hydrochloric acid and stirred for about 1 hour. Then, filtered crystals are precipitated, and washed the crystals with 20% ethanol water is cooled to 0 ~ 5 ℃ (93 mL). The resulting wet product crystals were dried under reduced pressure at 40 ℃, to give the title compound (64.32 g, 95.0% yield). 1 H NMR (400 MHz, DMSO-D 6 ) delta: 1.87 (3H, s), 3.38 ~ 3.68 (4H, M), 7.43 ~ 7.89 (5H, M).
(Example 7)
(S) -1- (2- hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylic acid quinine salt
(7-1) (S) -1- (2- hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylic acid quinine salt
obtained by the method of Example 6 the (RS) -1- (2- hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylic acid 50.00 g (160 mmol), N, N- dimethylacetamide (25 mL), ethyl acetate (85 mL) was added and dissolved at room temperature (solution 1).

 Quinine 31.05 g (96 mmol) in N, N- dimethylacetamide (25 mL), ethyl acetate (350 mL), was heated in water (15 mL) 65 ~ 70 ℃ was added, was added dropwise a solution 1. After about 1 hour stirring the mixture at 65 ~ 70 ℃, and slowly cooled to 0 ~ 5 ℃ (cooling rate standard: about 0.3 ℃ / min), and stirred at that temperature for about 0.5 hours. The crystals were filtered, 5 ℃ using ethyl acetate (100 mL) which was cooled to below are washed crystals, the resulting wet product crystals was obtained and dried under reduced pressure to give the title compound 43.66 g at 40 ℃ (Yield 42.9%). Furthermore, the diastereomeric excess of the obtained salt was 98.3% de. 1 H NMR (400 MHz, DMSO-D 6 ) delta: 1.30 ~ 2.20 (10H, M), 2.41 ~ 2.49 (2H, M), 2.85 ~ 3.49 (6H, M), 3.65 ~ 3.66 (1H, M), 3.88 (3H, s), 4.82 (1H, broad singlet), 4.92 ~ 5.00 (2H, m), 5.23 ~ 5.25 (1H, m), 5.60 (1H, br), 5.80 ~ 6.00 (1H, m), 7.36 ~ 7.92 (9H, M), 8.67 (1H, D, J = 4.6 Hz) (7-2) (S)-1-(2-hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3 diastereomeric excess of the carboxylic acid quinine salt HPLC measurements (% de)  that the title compound of about 10 mg was collected, and the 10 mL was diluted with 50v / v% aqueous acetonitrile me was used as a sample solution.

 Column: DAICEL CHIRALPAK IC-3 (4.6 mmI.D. × 250 mm, 3 μm)
mobile phase A: 0.02mol / L phosphorus vinegar buffer solution (pH 3)
mobile phase B: acetonitrile
solution sending of mobile phase: mobile phase A and I indicates the mixing ratio of mobile phase B in Table 1 below.
[Table 1]
  Detection: UV 237 nm
flow rate: about 0.8 mL / min
column temperature: 30 ℃ constant temperature in the vicinity of
measuring time: about 20 min
Injection volume: 5 μL
diastereomeric excess (% de), the title compound (retention time about 12 min), was calculated by the following equation using a peak area ratio of R-isomer (retention time of about 13 min).
% De = {[(the title compound (S body) peak area ratio) – (R body peak area ratio)] ÷ [(the title compound (S body) peak area ratio) + (R body peak area ratio)]} × 100
(Example 8)
(S) -1- (2- hydroxyethyl) -4-methyl -N- [4- (methylsulfonyl) phenyl] -5- [2- (trifluoromethyl) phenyl] -1H- pyrrole 3-carboxamide (Compound (A))
(8-1) (S)-1-(2-hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole -3 – carboxylic acid
obtained by the method of Example 7 (S) -1- (2- hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxylic acid (8α, 9R) -6′- methoxycinnamate Conan-9-ol 40.00 g (63 mmol) in ethyl acetate (400 mL), was added 2N aqueous hydrochloric acid (100 mL) was stirred at room temperature and separated . The resulting organic layer was concentrated under reduced pressure (120 mL), and added ethyl acetate (200 mL), and further concentrated under reduced pressure to obtain a solution containing the title compound (120 mL).
(8-2) N – {[4- (methylsulfonyl) phenyl] amino} oxamic acid 2 – ((S) -3- methyl-4 – {[4- (methylsulfonyl) phenyl] carbamoyl} -2- [ 2- (trifluoromethyl) phenyl] -1H- pyrrol-1-yl) ethyl
ethyl acetate (240 mL), was mixed tetrahydrofuran (80 mL) and oxalyl chloride 20.72 g (163 mmol), and cooled to 10 ~ 15 ℃ was. Then the resulting solution was added while keeping the 10 ~ 15 ℃ Example (8-1) and stirred for about 1 hour by heating to 15 ~ 20 ℃. After stirring, acetonitrile (120 mL) and pyridine 2.46 g (31 mmol) was added and the reaction mixture was concentrated under reduced pressure (120 mL), acetonitrile (200 mL) was added and further concentrated under reduced pressure (120 mL).
 After completion concentration under reduced pressure, acetonitrile (200 mL) was added and cooled to 10 ~ 15 ℃ (reaction 1).
 Acetonitrile (240mL), pyridine 12.39 g (157 mmol), 4- were successively added (methylsulfonyl) aniline 26.85 g (157 mmol), the reaction solution 1 was added while maintaining the 10 ~ 15 ℃, the 20 ~ 25 ℃ and the mixture was stirred and heated to about 1 hour.
 The resulting reaction solution in acetonitrile (40 mL), 2 N hydrochloric acid water (120 mL), was added sodium chloride (10.0 g) was stirred, and the layers were separated. Again, 2N aqueous hydrochloric acid to the organic layer (120 mL), was added sodium chloride (10.0 g) was stirred, and the layers were separated. After filtering the resulting organic layer was concentrated under reduced pressure (400 mL). Water (360 mL) was added to the concentrated liquid, after about 1 hour stirring, the crystals were filtered, washed with 50v / v% aqueous acetonitrile (120 mL), wet product of the title compound (undried product, 62.02 g) and obtained. 1 H NMR (500 MHz, DMSO-D 6 ) delta: 1.94 (s, 3H), 3.19 (s, 3H), 3.20 (s, 3H), 3.81 (t, 1H), 4.12 (t, 1H), 4.45 ( t, 2H, J = 5.81 Hz), 7.62 (t, 1H, J = 4.39 Hz), 7.74 (t, 2H, J = 3.68 Hz), 7.86 (dd, 3H), 7.92 (dd, 3H, J = 6.94 , 2.13 Hz), 7.97 (DD, 2H, J = 6.80, 1.98 Hz), 8.02 (DD, 2H), 10.03 (s, 1H), 11.19 (s, 1H)
(8-3) (S)-1- (2-hydroxyethyl) -4-methyl -N- [4- (methylsulfonyl) phenyl] -5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxamide (Compound (A))  ( the resulting wet product crystals 8-2), t- butyl methyl ether (200 mL), acetonitrile (40 mL), 48w / w potassium hydroxide aqueous solution (16 g) and water (200 mL) was added, I was stirred for about 2 hours at 25 ~ 35 ℃. After stirring, and the mixture is separated, the resulting organic layer was concentrated under reduced pressure (120 mL), ethanol (240 mL) was added and further concentrated under reduced pressure (120 mL). After completion concentration under reduced pressure, ethanol (36 mL), and heated in water (12 mL) was added 35 ~ 45 ℃, while maintaining the 35 ~ 45 ℃ was added dropwise water (280 mL), and was crystallized crystals. After cooling the crystal exudates to room temperature, I was filtered crystal. Then washed with crystals 30v / v% aqueous ethanol solution (80 mL), where it was dried under reduced pressure at 40 ℃, the title compound was obtained in crystalline (26.26 g, 89.7% yield). Moreover, the enantiomers of the resulting crystals was 0.3%.
1 H NMR (400 MHz, CDCl 3 ) delta: 1.74 (1H, Broad singlet), 2.08 (3H, s), 3.04 (3H, s), 3.63 ~ 3.80 (4H, M), 7.36 (1H, D, J = 7.2 Hz), 7.48 (1H, s), 7.58 ~ 7.67 (2H, M), 7.77 ~ 7.90 (6H, M).
(8-4) (S)-1-(2-hydroxyethyl) -4-methyl -N- [4- (methylsulfonyl) phenyl] -5- [2- (trifluoromethyl) phenyl] -1H- pyrrole -3- HPLC method for measuring the amount enantiomer carboxamide (%)  and collected the title compound of about 10 mg is, what was the 10 mL was diluted with 50v / v% aqueous acetonitrile to obtain a sample solution.
see
(Example 12) (S) -1- (2- hydroxyethyl) -4-methyl -N- [4- (methylsulfonyl) phenyl] -5- [2- (trifluoromethyl) phenyl] -1H- pyrrole 3-carboxamide (Compound (A)) Preparation of 2
(12-1) (S)-1-(2-hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H – pyrrole-3-carboxylic acid
obtained by the method of Example 7 (S) -1- (2- hydroxyethyl) -4-methyl-5- [2- (trifluoromethyl) phenyl] -1H- pyrrole 3-carboxylic acid (8α, 9R) -6′- methoxycinnamate Conan-9-ol 10.00 g (16 mmol) in t- butyl methyl ether (90 mL), water (10 mL) 36w / w% aqueous hydrochloric acid ( 5 mL) was added and stirring at room temperature and separated. The resulting organic layer was concentrated under reduced pressure (30 mL), was added ethyl acetate (50 mL), and further concentrated under reduced pressure to obtain a solution containing the title compound (30 mL).
(12-2) N – {[4- (methylsulfonyl) phenyl] amino} oxamic acid 2 – ((S) -3- methyl-4 – {[4- (methylsulfonyl) phenyl] carbamoyl} -2- [ 2- (trifluoromethyl) phenyl] -1H- pyrrol-1-yl) ethyl
ethyl acetate (50 mL), was mixed with tetrahydrofuran (20 mL) and oxalyl chloride 5.18 g (41 mmol), and cooled to 0 ~ 5 ℃ was.Then the resulting solution was added in Examples while maintaining the 0 ~ 5 ℃ (12-1), and the mixture was stirred for 6 hours at 0 ~ 10 ℃. After stirring, acetonitrile (30 mL) and pyridine 0.62 g (8 mmol) was added and the reaction mixture was concentrated under reduced pressure (30 mL), acetonitrile (50 mL) was added, and further concentrated under reduced pressure (30 mL).
 After concentration under reduced pressure end, is added acetonitrile (10 mL) and oxalyl chloride 0.10 g (1 mmol), and cooled to 0 ~ 5 ℃ (reaction 1).
 Acetonitrile (30mL), pyridine 3.15 g (40 mmol), 4- were successively added (methylsulfonyl) aniline 6.71 g (39 mmol), the reaction solution 1 was added while maintaining the 10 ~ 15 ℃, the 20 ~ 25 ℃ and the mixture was stirred and heated to about 1 hour.
 Insolubles from the resulting reaction solution was filtered, washed with acetonitrile (10 mL), and stirred for about 2 hours the addition of water (15 mL), followed by dropwise addition of water (75 mL) over about 1 hour . After about 1 hour stirring the suspension was filtered crystals were washed with 50v / v% aqueous acetonitrile (20 mL), wet product of the title compound (undried product, 15.78 g) to give a. 1 H NMR (500 MHz, DMSO-D 6 ) delta: 1.94 (s, 3H), 3.19 (s, 3H), 3.20 (s, 3H), 3.81 (t, 1H), 4.12 (t, 1H), 4.45 ( t, 2H, J = 5.81 Hz), 7.62 (t, 1H, J = 4.39 Hz), 7.74 (t, 2H, J = 3.68 Hz), 7.86 (dd, 3H), 7.92 (dd, 3H, J = 6.94 , 2.13 Hz), 7.97 (DD, 2H, J = 6.80, 1.98 Hz), 8.02 (DD, 2H), 10.03 (s, 1H), 11.19 (s, 1H)
(12-3) (S)-1- (2-hydroxyethyl) -4-methyl -N- [4- (methylsulfonyl) phenyl] -5- [2- (trifluoromethyl) phenyl] -1H- pyrrole-3-carboxamide (Compound (A))  ( the resulting wet product crystals 12-2), t- butyl methyl ether (50 mL), acetonitrile (10 mL), 48w / w potassium hydroxide aqueous solution (4 g) and water (50 mL) was added, 15 I was about 2 hours of stirring at ~ 25 ℃. After stirring, and the mixture is separated, the resulting organic layer was concentrated under reduced pressure (30 mL), was added ethanol (60 mL), was further concentrated under reduced pressure (30 mL). After completion concentration under reduced pressure, ethanol (14 mL), after addition of water (20 mL), was added a seed crystal, and was crystallized crystals. After dropwise over about 1 hour water (50 mL), and about 1 hour stirring, and crystals were filtered off. Then washed with crystals 30v / v% aqueous ethanol solution (10 mL), where it was dried under reduced pressure at 40 ℃, the title compound was obtained in crystal (6.36 g, 87.0% yield). Moreover, the enantiomers of the resulting crystals was 0.05%. Enantiomers amount, I was measured by the method of (Example 8-4). 1 H NMR (400 MHz, CDCl 3 ) delta: 1.74 (1H, Broad singlet), 2.08 (3H, s), 3.04 (3H, s), 3.63 ~ 3.80 (4H, M), 7.36 (1H, D, J = 7.2 Hz), 7.48 (1H, s), 7.58 ~ 7.67 (2H, m), 7.77 ~ 7.90 (6H, m).

Patent literature

Patent Document 1: International Publication WO2006 / 012642 (US Publication US2008-0234270)
Patent Document 2: International Publication WO2008 / 056907 (US Publication US2010-0093826)
Patent Document 3: Pat. No. 2,082,519 JP (US Patent No. 5,616,599 JP)
Patent Document 4: Pat. No. 1,401,088 JP (US Pat. No. 4,572,909)
Patent Document 5: US Pat. No. 3,025,292

Angiotensin II receptor 桔抗 agent

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2015012205&recNum=1&maxRec=&office=&prevFilter=&sortOption=&queryString=&tab=FullText

Angiotensin II receptor 桔抗 agent used as the component (A), olmesartan medoxomil, olmesartan cilexetil, losartan, candesartan cilexetil, valsartan, biphenyl tetrazole compounds such as irbesartan, biphenyl carboxylic acid compounds such as telmisartan, eprosartan, agile Sultan, and the like, preferably, a biphenyl tetrazole compound, more preferably, olmesartan medoxomil, is losartan, candesartan cilexetil, valsartan or irbesartan, particularly preferred are olmesartan medoxomil, losartan or candesartan cilexetil, Most preferably, it is olmesartan medoxomil.
 Olmesartan medoxomil, JP-A-5-78328, US Patent No. 5,616,599
is described in Japanese or the like, its chemical name is (5-methyl-2-oxo-1,3-dioxolen-4-yl ) methyl 4- (1-hydroxy-1-methylethyl) -2-propyl-1 – in [2 ‘(1H- tetrazol-5-yl) biphenyl-4-ylmethyl] imidazole-5-carboxylate, Yes, olmesartan medoxomil of the present application includes its pharmacologically acceptable salt.
Olmesartan.pngOLMESARTAN
 Losartan (DUP-753) is, JP 63-23868, is described in US Patent No. 5,138,069 JP like, and its chemical name is 2-butyl-4-chloro-1- [2 ‘ – The (1H- tetrazol-5-yl) biphenyl-4-ylmethyl] -1H- is imidazol-5-methanol, application of losartan includes its pharmacologically acceptable salt (losartan potassium salt, etc.).
Skeletal formula
 LOSARTAN
 Candesartan cilexetil, JP-A-4-364171, EP-459136 JP, is described in US Patent No. 5,354,766 JP like, and its chemical name is 1- (cyclohexyloxycarbonyloxy) ethyl-2 ethoxy-1- [2 ‘one (1H- tetrazol-5-yl) -4-Bife~eniru ylmethyl] -1H- benzimidazole-7-carboxylate is a salt application of candesartan cilexetil, which is a pharmacologically acceptable encompasses.
 Valsartan (CGP-48933), the JP-A-4-159718, are described in EP-433983 JP-like, and its chemical name, (S) -N- valeryl -N- [2 ‘- (1H- tetrazol – It is a 5-yl) biphenyl-4-ylmethyl) valine, valsartan of the present application includes its pharmacologically acceptable ester or a pharmacologically acceptable salt thereof.
 Irbesartan (SR-47436), the Japanese Patent Publication No. Hei 4-506222, is described in JP WO91-14679 publication, etc., its chemical name, 2-N–butyl-4-spiro cyclopentane-1- [2′ The (tetrazol-5-yl) biphenyl-4-ylmethyl] -2-imidazoline-5-one, irbesartan of the present application includes its pharmacologically acceptable salts.
 Eprosartan (SKB-108566) is described in US Patent No. 5,185,351 JP etc., the chemical name, 3- [1- (4-carboxyphenyl-methyl) -2-n- butyl – imidazol-5-yl] The 2-thienyl – methyl-2-propenoic acid, present in eprosartan, the carboxylic acid derivatives, pharmacologically acceptable ester or a pharmacologically acceptable salt of a carboxylic acid derivative (eprosartan mesylate, encompasses etc.).
 Telmisartan (BIBR-277) is described in US Patent No. 5,591,762 JP like, and its chemical name is 4 ‘- [[4 Mechiru 6- (1-methyl-2-benzimidazolyl) -2 – is a propyl-1-benzimidazolyl] methyl] -2-biphenylcarboxylic acid, telmisartan of the present application includes its carboxylic acid derivative, a pharmacologically acceptable ester or a pharmacologically acceptable salt thereof of carboxylic acid derivatives .
 Agile Sultan, is described in Patent Publication No. 05-271228 flat JP, US Patent No. 5,243,054 JP like, and its chemical name is 2-ethoxy-1 {[2 ‘- (5-oxo-4,5-dihydro 1,2,4-oxadiazole-3-yl) biphenyl-4-yl] methyl} -1H- benzo [d] imidazole-7-carboxylic acid (2-Ethoxy-1 {[2 ‘- (5- oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl) biphenyl-4-yl] is a methyl} -1H-benzo [d] imidazole-7-carboxylic acid).

References

  1. Jump up to:a b c http://adisinsight.springer.com/drugs/800021527
  2. Jump up to:a b Yang J, Young MJ (2016). “Mineralocorticoid receptor antagonists-pharmacodynamics and pharmacokinetic differences”. Curr Opin Pharmacol27: 78–85. doi:10.1016/j.coph.2016.02.005PMID 26939027.
  3. Jump up to:a b Kolkhof P, Nowack C, Eitner F (2015). “Nonsteroidal antagonists of the mineralocorticoid receptor”. Curr. Opin. Nephrol. Hypertens24 (5): 417–24. doi:10.1097/MNH.0000000000000147PMID 26083526.

External links

Esaxerenone
Esaxerenone.svg
Clinical data
Routes of
administration
Oral
Drug class Antimineralocorticoid
Identifiers
CAS Number
PubChem CID
ChemSpider
UNII
KEGG
ChEMBL
Chemical and physical data
Formula C22H21F3N2O4S
Molar mass 466.475 g/mol
3D model (JSmol)

///////////JAPAN 2019, Esaxerenone, Minebro, エサキセレノン ,Phase III, Diabetic nephropathies, HYPERTENSION. PHASE 3, N62TGJ04A1, UNII:N62TGJ04A1, эсаксеренон إيساكسيرينون 艾沙利  酮 CS-3150XL-550, CS 3150, XL 550

Savolitinib


ChemSpider 2D Image | Savolitinib | C17H15N9

Savolitinib

CAS 1313725-88-0, Molecular Formula, C17-H15-N9, Molecular Weight, 345.3685

1H-1,2,3-Triazolo(4,5-b)pyrazine, 1-((1S)-1-imidazo(1,2-a)pyridin-6-ylethyl)-6-(1-methyl-1H-pyrazol-4-yl)-

  • AZD-6094
  • AZD6094
  • HMPL-504
  • HMPL504
  • Savolitinib
  • Savolitinib [INN]
  • UNII-2A2DA6857R
  • Volitinib
  • HM 5016504
1H-1,2,3-Triazolo[4,5-b]pyrazine, 1-[(1S)-1-imidazo[1,2-a]pyridin-6-ylethyl]-6-(1-methyl-1H-pyrazol-4-yl)-
1-[(1S)-1-(Imidazo[1,2-a]pyridin-6-yl)ethyl]-6-(1-methyl-1H-pyrazol-4-yl)-1H-[1,2,3]triazolo[4,5-b]pyrazine [
2A2DA6857R
9935
Phase III, AstraZeneca
Hutchison China MediTech (Chi-Med), Cancer, kidney (renal cell carcinoma, papillary)

A c-Met kinase inhibitor with antineoplastic activity.

NCI: volitinib. An orally bioavailable inhibitor of the c-Met receptor tyrosine kinase with potential antineoplastic activity. Volitinib selectively binds to and inhibits the activation of c-Met in an ATP-competitive manner, and disrupts c-Met signal transduction pathways. This may result in cell growth inhibition in tumors that overexpress the c-Met protein. C-Met encodes the hepatocyte growth factor receptor tyrosine kinase and plays an important role in tumor cell proliferation, survival, invasion, and metastasis, and tumor angiogenesis; this protein is overexpressed or mutated in a variety of cancers.(NCI Thesaurus)

Savolitinib is an experimental small molecule inhibitor of c-Met. It is being investigated for the treatment of cancer by AstraZeneca.[1] It is in phase II clinical trials for adenocarcinomanon-small cell lung cancer, and renal cell carcinoma.[2]

Savolitinib is a first-in-class inhibitor of c-Met in phase III clinical development at at Hutchison China MediTech (Chi-Med) and AstraZeneca for the treatment of patients with MET-driven, unresectable and locally advanced or metastatic papillary renal cell carcinoma. Phase II trials are also under way for the oral treatment of locally advanced or metastatic pulmonary sarcomatoid carcinoma. AstraZeneca is conducting phase II clinical trials for the treatment of non-small cell lung cancer. Phase I/II trials are ongoing at Samsung Medical Center for the second-line treatment of advanced gastric adenocarcinoma patients with MET amplification.

In 2011, the drug was licensed to AstraZeneca by at Hutchison China MediTech (Chi-Med) for worldwide codevelopment and marketing rights for the treatment of cancer.

Image result for EPITINIB

SYNTHESIS

PAPER

Journal of Organic Chemistry (2018),

Abstract Image

A multidisciplinary approach covering synthetic, physical, and analytical chemistry, high-throughput experimentation and experimental design, process engineering, and solid-state chemistry is used to develop a large-scale (kilomole) Suzuki–Miyaura process. Working against clear criteria and targets, a full process investigation and optimization package is described highlighting how and why key decisions are made in the development of large-scale pharmaceutical processes.

Process Design and Optimization in the Pharmaceutical Industry: A Suzuki–Miyaura Procedure for the Synthesis of Savolitinib

AstraZeneca Pharmaceutical Technology and Development, Macclesfield SK10 2NA, United Kingdom
J. Org. Chem., Article ASAP
DOI: 10.1021/acs.joc.8b02351
Publication Date (Web): October 23, 2018
Copyright © 2018 American Chemical Society
This article is part of the Excellence in Industrial Organic Synthesis 2019 special issue.
Savolitinib (1) were added, and the resulting suspension was cooled to 0 °C over 8 h. After stirring for a further 4 h at 0 °C, the solid was collected via filtration, washed twice with cold s-BuOH (150 kg, 186 L), and dried in vacuo at 40 °C to give Savolitinib (1) as a white crystalline solid (105 kg, 304 mol, 76%): mp 205.9–208.8 °C; 1H NMR (400 MHz, DMSO-d6) δ 9.19 (s, 1H), 8.83 (s, 1H), 8.64 (s, 1H), 8.31 (s, 1H), 8.01 (s, 1H), 7.62–7.55 (m, 2H), 7.42 (dd, J = 1.7, 9.4 Hz, 1H), 6.45 (q, J= 7.1 Hz, 1H), 3.98 (s, 3H), 2.22 (d, J = 7.1 Hz, 3H); 13C {1H} NMR (DMSO-d6, 101 MHz) δ 147.9, 147.2, 143.9, 141.9, 138.5, 137.4, 133.7, 131.6, 125.4, 124.3, 123.9, 119.4, 117.1, 113.8, 55.5, 40.1, 39.1, 19.6 ppm; HRMS (ESI/Q-ToF) m/z [M + H – N2]+ calcd for C17H16N7 318.1462, found 318.1486.
NMR Summary S6 1H‐NMR
S7 13C‐NMR
S8 HSQC‐DEPT‐NMR
S9 COSY‐NMR
S10 HMBC‐13C/1H‐NMR
S11 NOESY‐NMR
S12 HRMS

PAPER

Journal of Medicinal Chemistry (2014), 57(18), 7577-7589

Abstract Image

HGF/c-Met signaling has been implicated in human cancers. Herein we describe the invention of a series of novel triazolopyrazine c-Met inhibitors. The structure–activity relationship of these compounds was investigated, leading to the identification of compound 28, which demonstrated favorable pharmacokinetic properties in mice and good antitumor activities in the human glioma xenograft model in athymic nude mice.

Discovery of (S)-1-(1-(Imidazo[1,2-a]pyridin-6-yl)ethyl)-6-(1-methyl-1H-pyrazol-4-yl)-1H-[1,2,3]triazolo[4,5-b]pyrazine (Volitinib) as a Highly Potent and Selective Mesenchymal–Epithelial Transition Factor (c-Met) Inhibitor in Clinical Development for Treatment of Cancer

Hutchison MediPharma Limited, Building 4, 720 Cai Lun Road, Zhangjiang Hi-Tech Park, 201203, Shanghai, China
J. Med. Chem.201457 (18), pp 7577–7589
DOI: 10.1021/jm500510f
Publication Date (Web): August 22, 2014
Copyright © 2014 American Chemical Society
*E-mail: weiguos@hmplglobal.com. Phone: (+86)-21-20673002.

Preparation of (S)-2-(4-(1-(1-(pyrazolo[1,5-a]pyridin-5-yl)ethyl)-1H-[1,2,3]triazolo[4,5-b]pyrazin-6-yl)-1H-pyrazol-1-yl)ethanol (30) and (R)-2-(4-(1-(1-(pyrazolo[1,5-a]pyridin-5-yl)ethyl)-1H-[1,2,3]triazolo[4,5-b]pyrazin-6-yl)-1H-pyrazol-1-yl)ethanol (31)

The racemic compound 44 (prepared by a procedure similar to that described for the synthesis of compound 2 using the corresponding 1-(pyrazolo[1,5-a]pyridin-5-yl)ethanamine instead of quinolin-6-ylmethanamine) (5 mg) was resolved by chiral HPLC to produce optically pure enantiomers 30 (1.0 mg) and 31 (1.9 mg). HPLC resolution conditions: Gilson system, Column: Dicel IA 20 × 250 mm; Mobile phase: n-Hexane/i-PrOH/DEA = 6/4/0.1; Flow rate: 8 mL/min; Detector: 254 nm). Compound 44: Purity: 95.8%, RT 9.28. MS (m/z): 376 (M + 1)+1H NMR (400 MHz, CD3OD) δ 9.07 (s, 1H), 8.49–8.47 (m, 2H), 8.26 (s, 1H), 7.93 (d, J = 2.4 Hz, 1H), 7.78 (s, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.62 (d, J = 2.4 Hz, 1H), 6.47 (q, J = 6.8 Hz, 1H), 4.33 (t, J = 4.2 Hz, 2H), 3.95 (t, J = 4.2 Hz, 2H), 2.25 (d, J = 6.8 Hz, 3H). Compound 30: MS (m/z): 376 (M + 1)+1H NMR (400 MHz, CD3OD) δ 9.08 (s, 1H), 8.50 (s,1 H), 8.50 (d, J = 7.2 Hz, 1H), 8.27 (s, 1H), 7.94 (d, J = 2.4 Hz, 1H), 7.79 (s, 1H), 7.01(dd, J = 7.2, 2.0 Hz, 1H), 6.62 (d, J = 1.6 Hz, 1H), 6.48 (q, J = 6.8 Hz, 1H), 4.33 (t, J = 4.2 Hz, 2H), 3.95(t, J = 4.2 Hz, 2H), 2.26 (d, J = 6.8 Hz, 3H). Purity: 98.1%, RT 18.44, ee: 96%. Compound 31: MS (m/z): 376 (M + 1)+1H NMR (400 MHz, CD3OD) δ 9.08 (s, 1H), 8.51 (s, 1H), 8.49 (d, J = 7.6 Hz, 1H), 8.27 (s, 1H), 7.94 (d, J = 2.4 Hz, 1H), 7.79 (s, 1H), 7.01 (dd, J = 7.2, 2.0 Hz,1H), 6.62 (d, J = 2.0 Hz, 1H), 6.48 (q, J = 6.8 Hz, 1H), 4.33 (t, J = 4.2 Hz, 2H), 3.95 (t, J = 4.2 Hz, 2H), 2.26 (d, J = 6.8 Hz, 3H). Purity: 90.7%, RT 24.22, ee: 81%. HPLC analysis conditions: Gilson system, Column: Chiralpak Ia 4.6 mm I.D. × 25 cm L; Mobile phase: n-Hexane/i-PrOH/DEA = 6/4/0.1; Flow rate: 1 mL/min; Detector: 254 nm.

PATENT

WO 2018175251

WO 2018055029

WO 2018024608

WO 2016087680

WO 2016081773

PATENT

JP 2016069348

PATENT

CN 105503906

The present invention provides a triazolopyrazine derivatives, the chemical name (S) -1- (l_ (imidazo [l, 2_a] pyrazin-6-yl) ethane-yl) -6-α _ -1H- pyrazol-4-yl-methyl) -1Η- [1,2,3] triazolo [4,5-b] pyrazine, of formula (I), the

Figure CN105503906AD00041

[0005] This compound is an inhibitor of the activity c -Me t, may be used for treatment or prevention of inhibition of c -Me t sensitive cancers. In the Chinese patent CN 102906092A (W02011 / 079804), discloses the synthesis and use triazolopyrazine derivatives. Prepared by repeating the above patent, the compound powder obtained by detecting an amorphous state. As those skilled in the art, although amorphous higher solubility and dissolution rate than polymorph in most cases, but it is unstable, hygroscopic, readily converted to stable crystalline form.Thus, without the presence of processing stability and poor storage stability shaped, and in the production process, the smaller the bulk density of the particles of amorphous, high surface free energy, are likely to cause aggregation, poor flowability, and a series of powerful elastic deformation of the formulation problem seriously affecting the clinical value of amorphous Drug triazolopyrazine derivatives.

PATENT

CN 105503905

PATENT

WO 2014174478

CN 102127096

PATENT

WO 2011079804

References

Savolitinib
Savolitinib.svg
Clinical data
Synonyms Volitinib
Identifiers
CAS Number
ChemSpider
KEGG
Chemical and physical data
Formula C17H15N9
Molar mass 345.37 g·mol−1
3D model (JSmol)

///////////////Savolitinib, Phase III, AZD-6094, AZD6094, HMPL-504, HMPL504, UNII-2A2DA6857R, Volitinib, HM 5016504

C[C@@H](c1ccc2nccn2c1)n3c4c(ncc(n4)c5cnn(c5)C)nn3

In some embodiments, the c-Met inhibitor is ARQ197 (Tivantinib). Tivantinib has the IUPAC name (3R,4R)-3-(5,6-Dihydro-4H-pyrrolo[3,2,1-ij]quinolin-1-yl)-4-(1H-indol-3-yl)-2,5-pyrrolidinedione and the following chemical structure:

[0058] In some embodiments, the c-Met inhibitor is EMD1214063 (MSC2156119J; Tepotinib).

Tepotinib has the IUPAC name 3-(1-(3-(5-((1-methylpiperidin-4-yl)methoxy)pyrimidin-2-yl)benzyl)-1,6-dihydro-6-oxopyridazin-3-yl)benzonitrile and the following chemical structure:

[0059] In some embodiments, the c-Met inhibitor is GSK/1363089/XL880 (Foretinib). Foretinib has the IUPAC name N1’-[3-fluoro-4-[[6-methoxy-7-(3-morpholinopropoxy)-4-quinolyl]oxy]phenyl]-N1-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide and the following chemical structure:

[0060] In some embodiments, the c-Met inhibitor is XL184 (Cabozantinib). Cabozantinib has the IUPAC name N-(4-((6,7-Dimethoxyquinolin-4-yl)oxy)phenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide and the following chemical structure:

[0061] In some embodiments, the c-Met inhibitor is HMPL-504/AZD6094/volitinib (Savolitinib). Volitinib has the IUPAC name (S)-1-(1-(imidazo[1,2-a]pyridin-6-yl)ethyl)-6-(1-methyl-1H-pyrazol-4-yl)-1H-[1,2,3]triazolo[4,5-b]pyrazine and the following chemical structure:

[0062] In some embodiments, the c-Met inhibitor is MSC2156119J (EMD 1214063, Tepotinib).

Tepotinib has the IUPAC name Benzonitrile, 3-[1,6-dihydro-1-[[3-[5-[(1-methyl-4-piperidinyl)methoxy]-2-pyrimidinyl]phenyl]methyl]-6-oxo-3-pyridazinyl]- and the following chemical structure:

[0063] In some embodiments, the c-Met inhibitor is LY2801653 (Merestinib). Merestinib has the IUPAC name N-(3-fluoro-4-{[1-methyl-6-(1H-pyrazol-4-yl)-1H-indazol-5 yl]oxy}phenyl)-1-(4-fluorophenyl)-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxamide and the following chemical structure:

[0064] In some embodiments, the c-Met inhibitor is AMG 337. AMG 337 has the IUPAC name 7-methoxy-N-((6-(3-methylisothiazol-5-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methyl)-1,5-naphthyridin-4-amine and the following chemical structure:

[0065] In some embodiments, the c-Met inhibitor is INCB28060 (Capmatinib). Capmatinib has the IUPAC name 2-fluoro-N-methyl-4-[7-(quinolin-6-ylmethyl)imidazo[1,2-b][1,2,4]triazin-2-yl]benzamide and the following chemical structure:

[0066] In some embodiments, the c-Met inhibitor is AMG 458. AMG 458 has the IUPAC name 1-(2-hydroxy-2-methylpropyl)-N-(5-((7-methoxyquinolin-4-yl)oxy)pyridin-2-yl)-5-methyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide and the following chemical structure:

[0067] In some embodiments, the c-Met inhibitor is PF-04217903. PF-04217903 has the IUPAC name 2-(4-(1-(quinolin-6-ylmethyl)-1H-[1,2,3]triazolo[4,5-b]pyrazin-6-yl)-1H-pyrazol-1-yl)ethanol and the following chemical structure:

[0068] In some embodiments, the c-Met inhibitor is PF-02341066 (Crizotinib). Crizotinib has the IUPAC name (R)-3-(1-(2,6-dichloro-3-fluorophenyl)ethoxy)-5-(1-(piperidin-4-yl)-1H-pyrazol-4-yl)pyridin-2-amine and the following chemical structure:

[0069] In some embodiments, the c-Met inhibitor is E7050 (Golvatinib). Golvatinib has the IUPAC name N-(2-fluoro-4-((2-(4-(4-methylpiperazin-1-yl)piperidine-1-carboxamido)pyridin-4-yl)oxy)phenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide and the following chemical structure:

[0070] In some embodiments, the c-Met inhibitor is MK-2461. MK-2461 has the IUPAC name N-((2R)-1,4-Dioxan-2-ylmethyl)-N-methyl-N’-[3-(1-methyl-1H-pyrazol-4-yl)-5-oxo-5H-benzo[4,5]cyclohepta[1,2-b]pyridin-7-yl]sulfamide and the following chemical structure:

[0071] In some embodiments, the c-Met inhibitor is BMS-777607. BMS-777607 has the IUPAC name N-(4-((2-amino-3-chloropyridin-4-yl)oxy)-3-fluorophenyl)-4-ethoxy-1-(4-fluorophenyl)-2-oxo-1,2-dihydropyridine-3-carboxamide and the following chemical structure:

[0072] In some embodiments, the c-Met inhibitor is JNJ-38877605. JNJ-38877605 has the IUPAC name 6-(difluoro(6-(1-methyl-1H-pyrazol-3-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methyl)quinoline and the following chemical structure:

Nemorexant


Nemorexant.svg

Nemorexant.png

ChemSpider 2D Image | LMQ24G57E9 | C23H23ClN6O2

Nemorexant

ACT-541468, UNII LMQ24G57E9

[(2S)-2-(5-Chloro-4-methyl-1H-benzimidazol-2-yl)-2-methyl-1-pyrrolidinyl][5-methoxy-2-(2H-1,2,3-triazol-2-yl)phenyl]methanone
1505484-82-1 [RN]
LMQ24G57E9
Methanone, [(2S)-2-(5-chloro-4-methyl-1H-benzimidazol-2-yl)-2-methyl-1-pyrrolidinyl][5-methoxy-2-(2H-1,2,3-triazol-2-yl)phenyl]-
  • Originator Actelion Pharmaceuticals
  • Developer Idorsia Pharmaceuticals
  • Class Sleep disorder therapies
  • Mechanism of Action Orexin receptor type 1 antagonists; Orexin receptor type 2 antagonists
  • Phase III Insomnia
  • 19 Oct 2018 Idorsia Pharmaceuticals plans a phase I trial for Liver disorders (Hepatic impairment) in November 2018 (PO) (NCT03713242)
  • 09 Oct 2018 Idorsia Pharmaceuticals completes a phase I trial in Insomnia (In volunteers) in Netherlands (PO) (NCT03609775)
  • 27 Sep 2018 Idorsia Pharmaceuticals plans a phase I trial for Hepatic impairment in November 2018 , (NCT03686995)

Nemorexant (developmental code name ACT-541468) is a dual orexin receptor antagonist (DORA) which was originated by Actelion Pharmaceuticals and is under development by Idorsia Pharmaceuticals for the treatment of insomnia.[1][2] It acts as a selective dual antagonist of the orexin receptors OX1 and OX2.[1][2] As of June 2018, nemorexant is in phase III clinical trials for the treatment of insomnia.[1]

Idorsia is developing nemorexant, a dual orexin receptor antagonist (DORA), for the oral treatment of insomnia and investigating the program for the treatment of COPD. In May 2018, a phase III study was initiated in subjects with insomnia disorder and in September 2018, a phase I trial was initiated in COPD.

PATENT

WO2013182972 ,

PATENT

WO2015083094 ,

Patent

WO 2015083070

Synthesis of nemorexant, using 2-methyl-L-proline hydrochloride as the starting material

N-Protection of 2-methyl-L-proline hydrochloride with Boc2O gives N-Boc-2-methyl-L-proline,

Which upon condensation with 4-chloro-3-methylbenzene-1,2-diamine using HATU and DIEA in CH2Cl2 affords the corresponding amide.

Cyclization of diamine in the presence of AcOH at 100 °C provides imidazole derivative,

Whose Boc moiety is removed by means of HCl in dioxane to yield 5-chloro-4-methyl-2-[2(S)-methylpyrrolidin-2-yl]benzimidazole hydrochloride.

N-Acylation of pyrrolidine derivative with 5-methoxy-2-(1,2,3-triazol-2-yl)benzoic acid  using HATU and DIEA in CH2Cl2 produces Nemorexant

5-methoxy-2-(1,2,3-triazol-2-yl)benzoic acid (prepared by the coupling of 2-iodo-5-methoxybenzoic acid with 1,2,3-triazole using CuI and Cs2CO3 in DMF)

PATENT

WO 2016020403

PATENT

WO 2015083071

https://patentscope.wipo.int/search/en/detail.jsf;jsessionid=E3DE4EDE68FD728AEE93D43C4BCBF8DA.wapp2nC?docId=WO2015083071&tab=PCTDESCRIPTION&maxRec=1000

Reference Example 1

1) Synthesis of 5-methoxy-2-(2H-1 ,2,3-triazol-2-yl)benzoic acid

2-lodo-5-methoxy benzoic acid (15.0 g; 53.9 mmol) is dissolved in anhydrous DMF (45 ml) followed by the addition of 1 H-1 ,2,3-triazole (7.452 g; 108 mmol) and cesium carbonate (35.155 g; 108 mmol). By the addition of cesium carbonate the temperature of the reaction mixture increases to 40°C and gas evolved from the reaction mixture. Copper(l)iodide (514 mg; 2.7 mmol) is added. This triggers a strongly exothermic reaction and the temperature of the reaction mixture reaches 70°C within a few seconds. Stirring is continued for 30 minutes. Then the DMF is evaporated under reduced pressure followed by the addition of water (170 ml) and EtOAc (90 ml). The mixture is vigorously stirred and by the addition of citric acid monohydrate the pH is adjusted to 3-4. The precipitate is filtered off and washed with water and EtOAc and discarded. The filtrate is poured into a separation funnel and the phases are separated. The water phase is extracted again with EtOAc. The combined organic layers are dried over MgS04, filtered and the solvent is evaporated to give 7.1 g of 5-methoxy-2-(2H-1 ,2,3-triazol-2-yl)benzoic acid as a white powder of 94% purity (6 % impurity is the regioisomerically N1-linked triazolo-derivative); tR [min] = 0.60; [M+H]+ = 220.21

2) Synthesis of (S)-1 -(tert-butoxycarbonyl)-2-methylpyrrolidine-2-carboxylic acid

2-Methyl-L-proline hydrochloride (99.7 g; 602 mmol) is dissolved in a 1/1-mixture of MeCN and water (800 ml) and triethylamine (254 ml; 1810 mmol) is added. The temperature of the reaction mixture slightly rises. The reaction mixture is cooled to 10°C to 15°C followed by careful addition of a solution of Boc20 (145 g; 662 mmol) in MeCN (200 ml) over 10 minutes.

Stirring at RT is continued for 2 hours. The MeCN is evaporated under reduced pressure and aq. NaOH solution (2M; 250 ml) is added to the residual aq. part of the reaction mixture. The water layer is washed with Et20 (2x 300 ml) then cooled to 0°C followed by slow and careful addition of aq. HCI (25%) to adjust the pH to 2. During this procedure a suspension forms.

The precipitate is filtered off and dried at HV to give 1 10.9 g of the title compound as a beige powder; tR [min] = 0.68; [M+H]+ = 230.14

3) Synthesis of (S)-tert-butyl 2-((2-amino-4-chloro-3-methylphenyl)carbamoyl)-2-

(S)-1-(tert-butoxycarbonyl)-2-methylpyrrolidine-2-carboxylic acid (60 g; 262 mmol) and HATU (100 g; 264 mmol) is suspended in DCM (600 ml) followed by the addition of DIPEA (84.6 g; 654 mmol) and 6-chloro-2,3-diaminotoluene (41 g; 262 mmol). The reaction mixture is stirred at rt for 14 hours then concentrated under reduced pressure and to the residue is added water followed by the extraction of the product with EtOAc (3x). The combined organic layers are washed with brine, dried over MgS04, filtered and the solvent is evaporated under

reduced pressure to give 185 g of the title compound as a dark brownish oil, which is used in the next step without further purification; tR [min] = 0.89; [M+H]+ = 368.01

4) Synthesis of (S)-tert-butyl 2-(5-chloro-4-methyl-1 H-benzo[d]imidazol-2-yl)-2-methylpyrrolidine-1 -carboxylate

(S)-tert-butyl 2-((2-amino-4-chloro-3-methylphenyl)carbamoyl)-2-methylpyrrolidine-1-carboxylate (185 g; 427 mmol) are dissolved in AcOH (100%; 611 ml), heated to 100°C and stirring continued for 90 minutes. The AcOH is evaporated under reduced pressure and the residue is dissolved in DCM followed by careful addition of saturated sodium bicarbonate solution. The phases are separated, the aq. phase is extracted once more with DCM, the combined aq. phases are dried over MgS04, filtered and the solvent is evaporated under reduced pressure to give 142.92 g of the title compound as a dark brown oil which is used in the next step without further purification; tR [min] = 0.69; [M+H]+ = 350.04

5) Synthesis of (S)-5-chloro-4-methyl-2-(2-methylpyrrolidin-2-yl)-1 H-benzo[d]imidazole hydrochloride

(S)-tert-butyl 2-(5-chloro-4-methyl-1 H-benzo[d]imidazol-2-yl)-2-methylpyrrolidine-1-carboxylate (355.53 g; 1.02 mol) are dissolved in dioxane (750 ml) followed by careful addition of HCI solution in dioxane (4M; 750 ml; 3.05 mol). The reaction mixture is stirred for 3 hours followed by the addition of Et20 (800 ml) which triggered precipitation of the product. The solid is filtered off and dried at high vacuum to give 298.84 g of the title compound as a redish powder; tR [min] = 0.59; [M+H]+ = 250.23

6) Synthesis of [(S)-2-(5-chloro-4-methyl-1 H-benzoimidazol-2-yl)-2-methyl-pyrrolidin-1- -(5-methoxy-2-[1,2,3]triazol-2-yl-phenyl)-methanone

(S)-5-chloro-4-methyl-2-(2-methylpyrrolidin-2-yl)-1 H-benzo[d]imidazole hydrochloride (62.8 g; 121 mmol) is dissolved in DCM (750 ml) followed by the addition of 5-methoxy-2-(2H-1 ,2,3-triazol-2-yl)benzoic acid (62.8 g; 121 mmol) and DIPEA (103 ml; 603 mmol). Stirring is continued for 10 minutes followed by the addition of HATU (47 g; 124 mmol). The reaction mixture is stirred for 16 hours at RT. The solvents are evaporated under reduced pressure and the residue is dissolved in EtOAc (1000 ml) and washed with water (3x 750 ml). The organic phase is dried over MgS04, filtered and the solvent is evaporated under reduced pressure. The residue is purified by CC with EtOAc / hexane = 2 / 1to give 36.68 g of the title compound as an amorphous white powder. tR [min] = 0.73; [M+H]+ = 450.96

Table 1 : Characterisation data for COMPOUND as free base in amorphous form

II. Preparation of crystalline forms of COMPOUND

Example 1 :

Preparation of seeding material of COMPOUND hydrochloride in crystalline Form 1

10 mg COMPOUND is mixed with 0.2 mL 0.1 M aq. HCI and 0.8 mL EtOH. The solvent is fully evaporated and 0.05 mL isopropanol is added. Alternatively 0.05 mL methyl-isobutylketone can be added. The sample is stored closed at room temperature for 4 days and crystalline material of COMPOUND hydrochloride in crystalline Form 1 is obtained. This material can be used as seeding material for further crystallization of COMPOUND hydrochloride in crystalline Form 1.

Example 2: Preparation and characterization of COMPOUND hydrochloride in crystalline form 1

5g COMPOUND is mixed with 0.9 mL 1 M aq. HCI and 20 mL EtOH. The solvent is evaporated and 25 mL isopropanol is added. Seeds of COMPOUND hydrochloride are added and the sample is allowed to stand at room temperature. After about 2 days the suspension is filtered and the solid residue is dried at reduced pressure (2 mbar for 1 hour) and allowed to equilibrate open for 2 hours at 24°C/46% relative humidity. The obtained solid is COMPOUND hydrochloride in crystalline Form 1

Table 2: Characterisation data for COMPOUND hydrochloride in crystalline form 1

PATENT

WO-2018202689

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018202689&tab=PCTDESCRIPTION&maxRec=1000

Process for the preparation of a crystalline potassium salt of a 2-(2H-[1,2,3]triazol-2-yl)-benzoic acid derivatives is claimed. Compound is disclosed to be useful for the preparation of pharmaceuticals, especially certain orexin receptor antagonists such as nemorexant .

References

  1. Jump up to:a b c https://adisinsight.springer.com/drugs/800044843
  2. Jump up to:a b Equihua-Benítez AC, Guzmán-Vásquez K, Drucker-Colín R (July 2017). “Understanding sleep-wake mechanisms and drug discovery”. Expert Opin Drug Discov12 (7): 643–657. doi:10.1080/17460441.2017.1329818PMID 28511597.
  3. Muehlan, C.; Heuberger, J.; Juif, P.E.; Croft, M.; van Gerven, J.; Dingemanse, J.
    Accelerated development of the dual orexin receptor antagonist ACT-541468: Integration of a microtracer in a first-in-human study
    Clin Pharmacol Ther 2018, 104(5): 1022
  4. A Study to Evaluate the Pharmacokinetics of ACT-541468 in Subjects With Mild, Moderate and Severe Hepatic Impairment (NCT03713242)
    ClinicalTrials.gov Web Site 2018, October 24
  5. Boof, M.-.L.; Ufer, M.; Halabi, A.; Dingemanse, J.
    Impact of the dual orexin receptor antagonist ACT-541468 on the pharmacokinetics of the CYP3A4 probe drug midazolam and assessment of the effect of food on ACT-541468
    119th Annu Meet Am Soc Clin Pharmacol Ther (ASCPT) (March 21-24, Orlando) 2018, Abst PI-043 
  6. Muehlan, C.; Brooks, S.; Zuiker, R.; van Gerven, J.; Dingemanse, J.
    Night-time administration of ACT-541468, a novel dual orexin receptor antagonist: Characterization of its pharmacokinetics, next-day residual effects, safety, and tolerability
    32nd Annu Meet Assoc Sleep Soc (SLEEP) (June 2-6, Baltimore) 2018, Abst 0008 
  7. Proposed international nonproprietary names (Prop. INN): List 118
    WHO Drug Inf 2017, 31(4): 635

External links

Patent ID

Title

Submitted Date

Granted Date

US9790208 CRYSTALLINE SALT FORM OF (S)-(2-(6-CHLORO-7-METHYL-1H-BENZO[D]IMIDAZOL-2-YL)-2-METHYLPYRROLIDIN-1-YL)(5-METHOXY-2-(2H-1, 2, 3-TRIAZOL-2-YL)PHENYL)METHANONE AS OREXIN RECEPTOR ANTAGONIST
2014-12-02
US2016368901 CRYSTALLINE FORM OF (S)-(2-(6-CHLORO-7-METHYL-1H-BENZO[D]IMIDAZOL-2-YL)-2-METHYLPYRROLIDIN-1 -YL)(5-METHOXY-2-(2H-1, 2, 3-TRIAZOL-2-YL)PHENYL)METHANONE AND ITS USE AS OREXIN RECEPTOR ANTAGONISTS
2014-12-02
Nemorexant
Nemorexant.svg
Clinical data
Synonyms ACT-541468
Routes of
administration
By mouth
Drug class Orexin antagonist
Identifiers
CAS Number
PubChem CID
ChemSpider
UNII
Chemical and physical data
Formula C23H23ClN6O2
Molar mass 450.927 g/mol
3D model (JSmol)

///////////////Nemorexant, ACT-541468, Phase III,  Insomnia

JNJ-54861911, Atabecestat , атабецестат , أتابيسيستات ,


2D chemical structure of 1200493-78-2imgChemSpider 2D Image | atabecestat | C18H14FN5OS

Atabecestat, JNJ-54861911

Cas 1200493-78-2

367.40, C18 H14 F N5 O S

2-Pyridinecarboxamide, N-[3-[(4S)-2-amino-4-methyl-4H-1,3-thiazin-4-yl]-4-fluorophenyl]-5-cyano-
  • N-[3-[(4S)-2-Amino-4-methyl-4H-1,3-thiazin-4-yl]-4-fluorophenyl]-5-cyano-2-pyridinecarboxamide
  • Atabecestat
  • атабецестат [Russian] [INN]
    أتابيسيستات [Arabic] [INN]

Atabecestat is a beta-secretase inhibitor drug candidate.

(S)-N-(3-(2-amino-4-methyl-4H-1,3-thiazin-4-yl)-4-fluorophenyl)-5-cyanopicolinamide

JNJ-54861911
N-{3-[(4S)-2-Amino-4-methyl-4H-1,3-thiazin-4-yl]-4-fluorophenyl}-5-cyano-2-pyridinecarboxamide
2-Pyridinecarboxamide, N-[3-[(4S)-2-amino-4-methyl-4H-1,3-thiazin-4-yl]-4-fluorophenyl]-5-cyano-

WO 2017111042, 1H-NMR (CDCl3) δ: 1.71 (3H, s), 4.06 (3H, s), 6.29 (2H, d, J = 2.4 Hz), 7.07 (1H, dd, J = 11.3, 8.8 Hz), 7.65 (2H, dd, J = 6.8, 2.8 Hz), 7.86 (1H, ddd, J = 8.8, 4.1, 2.8 Hz), 8.19 (1H, dd, J = 8.1, 2.0 Hz), 8.43 (1H, d, J = 8.1 Hz), 8.89 (1H, d, J = 2.0 Hz), 9.81 (1H, s).
[α]D -11.8±1.0° (DMSO, 23°C, c=0.518)

Image result

Structure of JNJ54861911.
Credit: Tien Nguyen/C&EN

Presented by: Yuji Koriyama, associate director at Shionogi & Co.

Target: β-site amyloid presursor protein cleaving enzyme 1 (BACE1), an enzyme whose buildup is implicated in Alzheimer’s disease

Disease: Alzheimer’s disease

Reporter’s notes: Presented by Koriyama, who told the audience he was attending the ACS National Meeting for the first time, JNJ-5486911 joins dozens of clinical candidates from many companies in Phase II and III trials to treat Alzheimer’s disease. Researchers started with a hit that inhibited BACE1 with approximately 2,600 nM affinity and advanced the program until finally reaching a compound with roughly 1 nM affinity. The compound is being jointly developed by Shionogi & Co. and Janssen Pharmaceuticals.

  • Originator Shionogi
  • Developer Janssen Research & Development
  • Class Antidementias; Small molecules
  • Mechanism of Action Amyloid precursor protein secretase inhibitors

Highest Development Phases

  • Phase II/III Alzheimer’s disease

Most Recent Events

  • 16 Jul 2017 Pharmacodynamics data from preclinical trials in Alzheimer’s disease presented at the Alzheimer’s Association International Conference (AAIC-2017)
  • 15 Dec 2016 Biomarkers information updated
  • 01 Jun 2016 Janssen Research & Development completes a phase I pharmacokinetic interaction trial in Healthy volunteers in Germany (PO) (NCT02611518)
  • Image result for Janssen Research & Development

SYNTHESIS

PATENTS

WO 2009151098

Applicants: SHIONOGI & CO., LTD. [JP/JP]; 1-8, Doshomachi 3-chome, Chuo-ku, Osaka-shi, Osaka 5410045 (JP) (For All Designated States Except US).
HORI, Akihiro [JP/JP]; (JP) (For US Only).
YONEZAWA, Shuji [JP/JP]; (JP) (For US Only).
FUJIKOSHI, Chiaki [JP/JP]; (JP) (For US Only).
MATSUMOTO, Sae [JP/JP]; (JP) (For US Only).
KOORIYAMA, Yuuji [JP/JP]; (JP) (For US Only).
UENO, Tatsuhiko [JP/JP]; (JP) (For US Only).
KATO, Terukazu [JP/JP]; (JP) (For US Only)
Inventors: HORI, Akihiro; (JP).
YONEZAWA, Shuji; (JP).
FUJIKOSHI, Chiaki; (JP).
MATSUMOTO, Sae; (JP).
KOORIYAMA, Yuuji; (JP).
UENO, Tatsuhiko; (JP).
KATO, Terukazu; (JP)

PATENT

WO 2011071057

PATENT

WO 2017175855

PATENT

WO 2017111042

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2017111042&recNum=1&maxRec=&office=&prevFilter=&sortOption=&queryString=&tab=FullText

Scheme 1-D
[Chem. 27]

Example 1-4
Preparation of Compound 15
[Chem. 31]

Compound 12 (3.0 g, 20.3 mmol) was dissolved in N-methylpyrrolidone (18 mL), and the solution was cooled to 5°C. Thionyl chloride (3.1 g, 26.1 mmol) was added to obtain a solution of Compound 13.
To a suspension of Compound 11 (5.0 g, 16.8 mmol) in ethyl acetate (50 mL) were added sodium bicarbonate (3.5 g, 42.0 mmol) and water (50 mL), and the mixture was stirred for 5 min at 20°C.
The layers were separated, and the organic layer was concentrated to 10 g under reduced pressure. N-Methylpyrrolidone (5 mL) and 35% hydrochloric acid (0.9 g) were added, and the mixture was cooled to 3°C. The solution of Compound 13 and N-methylpyrrolidone (1.5 mL) were added to obtain a solution of Compound 15.
The solution of Compound 15 was added to a mixture of water (15 mL) and ethyl acetate (10 mL). After stirring the mixture for 1 hour, triethylamine (14.8 g, 14.6 mmol), N-methylpyrrolidone (1.5 mL) and water (5 mL) were added and further stirred for 1 hour. Water (45 mL) was added, and the mixture was stirred for 1 hour, filtered and dried to obtain crystals of Compound 15 (Crystalline Form I, 5.71 g, 92.4%).

Compound 15
1H-NMR (CDCl3) δ: 1.71 (3H, s), 4.06 (3H, s), 6.29 (2H, d, J = 2.4 Hz), 7.07 (1H, dd, J = 11.3, 8.8 Hz), 7.65 (2H, dd, J = 6.8, 2.8 Hz), 7.86 (1H, ddd, J = 8.8, 4.1, 2.8 Hz), 8.19 (1H, dd, J = 8.1, 2.0 Hz), 8.43 (1H, d, J = 8.1 Hz), 8.89 (1H, d, J = 2.0 Hz), 9.81 (1H, s).
[α]D -11.8±1.0° (DMSO, 23°C, c=0.518)

Example 1-5
To a suspension of Compound 11 (1831 g, 6.2 mol) in ethyl acetate (18L) were added sodium bicarbonate (1293 g, 15.4 mol) and water (18L), and the mixture was stirred for 5 min at 20°C. The layers were separated, and the organic layer was concentrated to 3.8 kg under reduced pressure to obtain a concentrated solution of Compound 14.
Compound 12 (912 g, 6.2 mol) was dissolved in N-methylpyrrolidone (64L), and the solution was cooled to 4°C. Thionyl chloride (951 g, 8.0 mol) was added, and the mixture was stirred for 30 min. The concentrated solution of Compound 14 was added to obtain a solution of Compound 15.
The solution of Compound 15 and N-methylpyrrolidone (1.6 L) were added to water (18 L), and the mixture was stirred for 40 min at 25°C. 24% sodium hydroxide in water (5 kg), sodium bicarbonate (259 g, 3.1 mmol) and water (2.7 L) were added to the mixture. The mixture was stirred for 1 hour, filtered and dried to obtain crystals (metastable Form II) of Compound 15 (1.93 kg, 85.4%).

Example 1-3
Preparation of Compound 11
[Chem. 30]

A suspension of Compound 9 (20.0 g, 29.0 mmol) in N,N-dimethylacetamide (30 mL) was cooled to 5°C. 1,8-diazabicyclo(5,4,0)-7-undecene (39.7 g, 260.8 mmol) was added, and the mixture was stirred for 22 hours. Water (70 mL) was added to afford a solution of Compound 10.

To a mixture of ethyl acetate (200 mL), water (40 mL) and 62% sulfuric acid (12.7 g) was added the solution of Compound 10, and the mixture was cooled to 10°C. 15% sulfuric acid (3.7 g) was added, and the mixture was warmed to 20°C. The layers were separated, and the organic layer was washed with 5% sodium chloride in water (95 g). The layers were separated, and the organic layer was concentrated in vacuo to 42 mL. Ethyl acetate (20 mL) and 50% potassium carbonate in water (20 g) were added, and the mixture was warmed to 40°C. 4-chlorobenzenethiol (6.29 g, 43.5 mmol) and ethyl acetate (11 mL) were added, and the mixture was stirred for 1 hour. After cooling to 20°C, ethyl acetate (100 mL), water (68 mL) and 15% hydrochloric acid (42.6 g) were added. The layers were separated, and ethyl acetate (149 mL) and 20% potassium carbonate in water (40.5 g) were added to the aqueous layer. The layers were separated, and the organic layer was washed with water (100 mL). The layers were separated, and the organic layer was concentrated to 20 mL. Acetic acid (1.7 g, 29.0 mmol) was added, and the mixture was cooled to 5°C and stirred for 90 min, filtered and dried to afford 7.19 g of crystals of Compound 11 (yield: 83.4%, optical purity of (S)-isomer: 100%).

Compound 11
1H-NMR (DMSO-d6) δ: 6.74 (1H, dd, J=11.86, 8.56 Hz), 6.62 (1H, dd, J=6.97, 2.93 Hz), 6.35-6.40 (2H, m), 6.11 (1H, dd, J=9.60, 4.71 Hz), 1.90 (3H, s), 1.49 (3H, s).

The optical purity was determined as follows.
(Sample Preparation)
25 mg of Compound 11 was weighed and dissolved in a solvent to prepare a 50 mL sample solution.

(Method)
Using liquid chromatography, the peak area was determined by automatic integration method for each of (R)- and (S)-isomers of Compound 11.

(Conditions)
Detector: ultraviolet absorptiometer (wave length: 230 nm)
Column: CHIRALCEL OD-RH, φ4.6×150 mm, 5 μm, (Daicel Corporation)
Column Temp.: constant at around 40°C
Mobile Phase: water/acetonitrile (LC grade)/methanol (LC grade)/triethylamine (1320:340:340:1)
Flow Rate: 1.0 mL/min (retention time of Compound 11: about 8 min for (R)-isomer, about 9 min for (S)-isomer)
Time span of measurement: over 15 min from the sample injection
Injection Volume: 10 μL
Sample Cooler Temp.: constant at around 25°C
Autoinjector Rinse Solution: water/acetonitrile (1:1)

http://www.shionogi.co.jp/en/

Image result for HORI, Akihiro SHIONOGI

//////////////JNJ-54861911, Atabecestat , атабецестат , أتابيسيستات ,Phase III , Alzheimer’s disease, DEMENTIA, Shionogi, Developer,  Janssen Research & Development

C[C@]1(C=CSC(N)=N1)c3cc(NC(=O)c2ccc(C#N)cn2)ccc3F

ELECLAZINE, элеклазин , إيليكلازين , 依来克秦 , REVISITED


Eleclazine.pngChemSpider 2D Image | eleclazine | C21H16F3N3O3

ELECLAZINE

GS-6615

Molecular Formula: C21H16F3N3O3
Molecular Weight: 415.372 g/mol

1443211-72-0

4-(pyrimidin-2-ylmethyl)-7-[4-(trifluoromethoxy)phenyl]-2,3-dihydro-1,4-benzoxazepin-5-one

4-(pyrimidin-2-ylmethyl)-7-[4-(trifluoromethoxy)phenyl]-2,3,4,5- tetrahydro-1,4- benzoxazepin-5-one

7-(4-(Trifluoromethoxy)phenyl)-3,4-dihydrobenzo[f][1,4]oxazepin-5(2H)-one

1,4-Benzoxazepin-5(2H)-one, 3,4-dihydro-4-(2-pyrimidinylmethyl)-7-[4-(trifluoromethoxy)phenyl]-

Eleclazine; UNII-PUY08529FK; 1443211-72-0; GS-6615; PUY08529FK; 4-(pyrimidin-2-ylmethyl)-7-(4-(trifluoromethoxy)phenyl)-3,4-dihydrobenzo[f][1,4]oxazepin-5(2H)-on

элеклазин [Russian] [INN]
إيليكلازين [Arabic] [INN]
依来克秦 [Chinese] [INN]
  • Phase III Long QT syndrome
INGREDIENT UNII CAS
Eleclazine Hydrochloride 4R1JP3Q4HI 1448754-43-5

Eleclazine has been used in trials studying the treatment of LQT2 Syndrome, Long QT Syndrome, Ischemic Heart Disease, Ventricular Arrhythmia, and Long QT Syndrome Type 3, among others.

In 2015, orphan drug designation was assigned to the product by the FDA for the treatment of congenital long QT syndrome.

  • Originator Gilead Sciences
  • Class Antiarrhythmics; Ischaemic heart disorder therapies; Pyrimidines; Small molecules; Vasodilators
  • Mechanism of Action Sodium channel antagonists

Highest Development Phases

  • Phase III  Long QT syndrome
  • Phase II/III Hypertrophic cardiomyopathy
  • Phase II Ventricular arrhythmias
  • No development reported Ischaemic heart disorders

Most Recent Events

  • 15 Nov 2017 Gilead Sciences presents safety and adverse events data from a phase III trial in Long QT syndrome type 3 at the 90th Annual Scientific Sessions of the American Heart Association (AHA-2017)
  • 11 Nov 2017 Efficacy data from the phase II TEMPO trial in Ventricular arrthymmia presented at the 90th Annual Scientific Sessions of the American Heart Association
  • 17 Feb 2017 Gilead Sciences terminates a phase II/III trial in Hypertrophic cardiomyopathy in Australia, France, Germany, Israel, Italy, Netherlands, USA and United Kingdom (NCT02291237)
  • Gilead Sciences was developing eleclazine (GS-6615), a late sodium current inhibitor, for the potential oral (tablet) treatment of hypertrophic cardiomyopathy and arrhythmias including long QT-3 (LQT3) syndrome.

Image result

Image result for Long QT syndrome

Image result for Long QT syndrome

Image result for Long QT syndrome

Image result for Long QT syndrome

Image result for Long QT syndrome

Long QT syndrome

The late sodium current (INaL) is a component of the fast Na+ current of cardiac myocytes and neurons. Late sodium current in cardiac cells is small compared with the fast component, but it may make a large contribution to sodium loading during each cardiac cycle. Impaired sodium channel function contributes to pathologic increase of the late sodium current, sodium overload, and sodium-induced calcium overload by way of the sodium-calcium exchanger. Calcium overload causes impaired diastolic relaxation, which increases diastolic wall tension, increases myocardial oxygen demand, reduces myocardial blood flow and oxygen supply, microvascular perfusion, and worsens ischemia and angina. Many common neurological and cardiac conditions are associated with abnormal (INaL) augmentation, which contributes to the pathogenesis of both electrical and contractile dysfunction in mammals. Inhibiting the late sodium current can lead to reductions in elevated intracellular calcium levels, which, in turn, may lead to reduced tension in the heart wall and reduced oxygen requirements for the heart muscle. Inhibition of cardiac late sodium current is a strategy used to suppress arrhythmias and sodium -dependent calcium overload associated with myocardial i schemia and heart failures. Thus, compounds that selectively inhibit the iate sodium current (INaL) in mammals may be useful in treating such disease states.

Eleclazine (4-(pyrimidin-2-ylmethyl)-7-(4-(trifluoromethoxy)pheny l)-3,4-dihydrobenzo[b]oxepin-5(2H)-one]; CAS # 144321 1-72-0) is an inhibitor of the late sodium current, Eleclazine is being investigated for the treatment of cardiomyopathy, specifically hypertrophic cardiomyopathy, as well as additional cardiovascular indications, including angina, heart failure, atrial fibrillation (AF), ischemic heart disorders, atrial premature beats (APBs), myocardial isch mia, and arrhythmias.

Eleclazine

Eleclazine shows a shortening of the QTc interval (the time interval between the start of the Q-wave and the end of T-wave in the electrical cycle of the heart) in patients with QT-3 (LQT3) sydrome. LQTS is a genetic disorder that prolongs the heart’s QTc interval and can cause life-threatening cardiac arrhythmias. Therefore, eleclazine is also being investigated for treatment of long QT syndrome.

Eleclazine may be metabolized in the liver and may be subject to extensive cytochrome P450-mediated oxidative metabolism. Eleclazine is metabolized predominantly by N-dealkylation, and elimination is principally in the bile and gastrointestinal tract. The primary metabolite of eleclazine is GS-623134

Adverse effects associated with eleclazine may include dizziness, dry mouth, nausea, weakness, ringing in ears, tremors, and the like. Additionally, some metabolites of eleclazine, particularly the metabolite GS 623134, may have undesirable side effects.

PATENT

PRODUCT, WO 2013112932, WO 2013006485

WO 2013006463

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2013006463&recNum=1&maxRec=&office=&prevFilter=&sortOption=&queryString=&tab=PCTDescription

WO 2013006463 , ( US8962610 ) hold protection in the EU states until 2032 and in US until 2033 with US154 extension.

PATENT

WO 2015017661

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2015017661

Provided herein is a method for reducing the prolongation of the QT interval in a human patient, said method comprising administering to the patient an effective amount of Compound 1:

Example 1: 4-(pyrimidin-2-ylmethyl)-7-(4-(trifluoromethoxy)phenyl)-3,4- dihydrobenzo[f][1,4]oxazepin-5(2H)-one (Compound 1)

To a solution of Compound 1-A (20 g, 0.083 mol, 1 eq.) and Compound 1-B (25 g, 0.15 mol, 1.8 eq.) in DMF (150 mL), NaOH solution (20 mL, 10 M, 5 eq.) was slowly added at room temperature (slightly exothermic) and stirred at r.t. for 10 min, followed by heating at 95 °C for 2 h. After cooling the reaction mixture, ethyl acetate (200 mL) was added and the organic layer was separated. The organics was washed with water (20 mL), brine, dried over sodium sulphate and concentrated.

The residue was dissolved in 1,4-dioxane (50 mL) and to this 4 N HCl in dioxane (50 mL) and cone. HCl ( 2 mL) was added and stirred at room temperature for 4 h, filtered the precipitate, washed with ethyl acetate and dried. Compound 1-C was obtained (30 g) as a light yellow solid.

To the bromide (15 g, 0.04 mol, 1 eq), boronic acid (12.5 g, 0.06 mol, 1.5 eq) and potassium carbonate (22 g, 0.16 mol, 4 eq) in a round bottom flask, solvent (150 mL, toluene/isopropanol/water : 2/1/1) was added and stirred under nitrogen for 10 min. To the above solution the palladium catalyst (1 g, 0.012 mol, 0.02 eq) was added and heated at 85 °C for 2h. The reaction mixture was diluted with ethyl acetate, separated the organic layer and filtered the organic layer through a plug of celite and silica gel and concentrated. Column purification on silica gel using ethyl acetate/hexane as eluent provided Compound 1 (13 g).

To a solution of Compound 1 (26 g) in 1,4-dioxane (25 mL), 4N HCl/dioxane (25 mL) was added followed by cone. HCl (2 mL) and stirred at room temperature for 4h. Solvent was distilled off, dichlorom ethane was added and distilled off and to the residue, ethyl acetate (150 mL) was added and stirred at room temperature overnight and filtered the precipitate, washed with ethyl acetate, hexane and dried under vacuum. Compound 1-HCl obtained (24.8 g) was a white solid.

1H-NMR (CDCl3) 5 8.72 (d, 2H, J= 5.2 Hz), 8.17 (d, 1H, J= 2.4 Hz), 7.59-7.63 (m, 3H), 7.26 (d, 2H, J= 3.2 Hz), 7.22 (t, 1H, J= 4.8 Hz), 7.10 (d, 1H, J= 8.4 Hz), 5.10 (s, 2H), 4.56 (t, 2H, J = 5.0 Hz), 3.77 (t, 2H, J= 5.0 Hz); MS m/z 416.1 (M+H).

PATENT

WO-2018048977

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018048977&redirectedID=true

Novel deuterated analogs of a substituted oxazepin compounds, particularly eleclazine and their salts, esters, prodrugs and solvates and compositions and combinations comprising them are claimed. Also claim is their use for treating a late sodium current-mediated disorder, such as acute coronary syndrome, angina, congestive heart disease, myocardial infraction, diabetes, ischemic heart disorders, inflammatory diseases and cancers.

EXAMPLE 1- COMPARATIVE

[00297] 4-(pyrimidin-2-ylmethyl)-7-[4-(trifluorome4hoxy)phenyl]-2,3,4,5-tetrahydro-l,4- benzoxazepin-5-one [Eleclazine]

[00299] To a solution of 5-bromo-2-hydroxybenzoate (10 g, 43.28 mmol, 1.00 equiv) in DMA (100 ml.) was added potassium carbonate (9 g, 65, 12 mmol, 1.50 equiv) and 2-chloroacetonitrile (3.4 mL, 1.25 equiv). The resulting suspension was stirred overnight. The solids were filtered out. The filtrate was washed with water. The resulting solution was extracted with ethyl acetate (3 x 50 mL). The organic layers were dried over anhydrous sodium sulfate and concentrated under vacuum to afford 1 1 g (94%) of methyl 5-bromo-2-(cyanomethoxy)benzoate as a white solid, LC-MS: m/z = 270 [M+H]+.

[00300] Step 2: 7-bromo-2,3,4,5-tetrahydro-l,4-benzoxazepin-5-one

[00301] To a solution of 5-bromo-2-(cyanomethoxy)benzoate [Example 1 , Step 1 ] (4 g, 14.81 mmol, 1.00 equiv) in methanol (50 mL) was added saturated aq. NIL (4 mL) and Raney-Ni (2 mL) under a H2 atmosphere. The resulting solution was stirred overnight at room temperature. The catalyst was filtered out. The filtrate was concentrated under vacuum. The residue was purifsed by SiCte chromatography eluted with ethyl acetate/petroleum ether (1 : 1 ) to afford 530 mg (15%) of 7-bromo-2,3,4,5-tetrahydro-l,4-benzoxazepin-5-one as a yellow solid. LC-MS: m/z = 242 [M+H]+.

[00302] Step 3 : 7-bromo-4-(pyrimidin-2-ylmethyl)-2,3,4,5-tetrahydro-l,4-benzoxazepin-5- one

[00303] To a solution of 7-bromo-2,3,4,5-tetrahydro- l ,4-benzoxazepin-5-one [Example 1, Step 2] (530 mg, 2.19 mmol, 1.00 equiv) and 2-(chloromethyl)pyrimidine hydrochloride (650 mg, 3.96 mmol, 1.80 equiv) in DMF (10 mL), was slowly added a NaOH solution (0.55 mL, 10 M, 2.50 equiv), which was stirred at room temperature for 10 min. Then the mixture was stirred at 95°C for 2 h. After cooling the reaction mixture, ethyl acetate (30 mL) was added and the organic layer was separated. The organic layers were washed with water, brine, dried over anhydrous sodium sulfate, and concentrated under vacuum to afford 600 mg (82%) of 7-bromo- 4-(pyrimidin-2-ylmethyl)-2,3,4,5-tetrahydro-l,4-benzoxazepin-5-one as light yellow oil . LC-MS: m/z = 334 [M+H]+.

[00304] Step 4: 4-(pyrimidin-2-ylmethyl)-7-[4-(trifluoromethoxy)phenyl]-2,3,4,5-tetrahydro- 1 ,4-benzoxazepin-5-one

[00305] To a solution of 7-bromo-4-(pyriraidin-2-ylmethyl)-2,3,4,5-tetrahydro-l,4- benzoxaze- pin-5-one [Example 1, Step 3] (277 mg, 0.83 mmol, 1.00 equiv) in Toluene/iPrOH/thO (2: 1 : 1, 4 mL) was added potassium carbonate (459 mg, 3.32 mmol, 4.00 equiv) and [4-(trifluoromethoxy)phenyl]boronic acid (257 mg, 1.25 mmol, 1.50 equiv). The mixture was stirred for 10 min at room temperature. Then Pd(dppf)Ch (12 mg, 0.02 equiv) was added to the solution. The mixture was stirred at 85°C for 2 h. After cooling the reaction mixture, ethyl acetate (30 mL) was added, and the organic layer was separated. The organic layer was washed with water, brine, dried over anhydrous sodium sulfate, and concentrated under vacuum. The crude product was purified by Prep-HPLC with the following conditions: Column, XBridge Prep C18 OBD Column, Sum, 19*150mm; mobile phase, Water (10 mmol/L NH4HCO3) and CH3CN (50,0% CH3CN up to 52.0% in 7 min); Detector, UV 254, 220nra to afford 190 mg (55%) of 4-(pyrimidin-2-ylmethyl)-7-[4-(trifluoromethoxy)phenyl]-2,3,4,5- tetrahydro-1,4- benzoxazepin-5-one as a white solid. LC-MS: m/z = 416 [M+H]+

[00306] 1H NMR (400 MHz, Chloroform-t/) δ 8.75-8.74 (m, 2H), 8.20-8. 19 (m, IH), 7.66- 7,61 (m, 3H), 7,29-7,28 (m, IH), 7.27-7.26 (m, IH), 7.24-7.23 (m, I H), 7.13-7.1 1 (m, IH), 5.12 (s, 2H), 4.60-4.57 (m, 2H), 3.81 -3.78 (m, 2H).

PAPER

Journal of Medicinal Chemistry (2016), 59(19), 9005-9017

Abstract Image

Late sodium current (late INa) is enhanced during ischemia by reactive oxygen species (ROS) modifying the Nav 1.5 channel, resulting in incomplete inactivation. Compound 4 (GS-6615, eleclazine) a novel, potent, and selective inhibitor of late INa, is currently in clinical development for treatment of long QT-3 syndrome (LQT-3), hypertrophic cardiomyopathy (HCM), and ventricular tachycardia–ventricular fibrillation (VT–VF). We will describe structure–activity relationship (SAR) leading to the discovery of 4 that is vastly improved from the first generation late INa inhibitor 1(ranolazine). Compound 4 was 42 times more potent than 1 in reducing ischemic burden in vivo (S–T segment elevation, 15 min left anteriorior descending, LAD, occlusion in rabbits) with EC50values of 190 and 8000 nM, respectively. Compound 4 represents a new class of potent late INainhibitors that will be useful in delineating the role of inhibitors of this current in the treatment of patients.

Discovery of Dihydrobenzoxazepinone (GS-6615) Late Sodium Current Inhibitor (Late INai), a Phase II Agent with Demonstrated Preclinical Anti-Ischemic and Antiarrhythmic Properties

Medicinal Chemistry, Drug Metabolism, §Drug Safety Evaluation, Formulation and Process Development, and Structural Chemistry, Gilead Sciences Inc., 333 Lakeside Drive, Foster City, California 94404, United States
# Biology, Gilead Sciences Inc., 7601 Dumbarton Circle, Fremont, California 94555, United States
J. Med. Chem.201659 (19), pp 9005
7-(4-(Trifluoromethoxy)phenyl)-3,4-dihydrobenzo[f][1,4]oxazepin-5(2H)-one 4
Compound 4 HCl obtained (24.8 g) was obtained as a white solid. Anal. HPLC 100% (6.78 min).
 
 1H NMR (CDCl3) δ 8.72 (d, 2H, J = 5.2 Hz), 8.17 (d, 1H, J = 2.4 Hz), 7.59–7.63 (m, 3H), 7.26 (d, 2H, J = 3.2 Hz), 7.22 (t, 1H, J = 4.8 Hz), 7.10 (d, 1H, J = 8.4 Hz), 5.10 (s, 2H), 4.56 (t, 2H, J = 5.0 Hz), 3.77 (t, 2H, J = 5.0 Hz). LCMS m/z 416.1 (M + H).
HRMS-ESI+: [M + H]+ calcd for C21H16F3N3O3, 416.1217; found, 416.1215.
PAPER
Inhibition of late sodium current suppresses calcium-related ventricular arrhythmias by reducing the phosphorylation of CaMK-II and sodium channel expressions
Scientific Reports (2017), 7, (1), 1-11.
PATENT
US 20180064726
PATENTS
Patent ID

Patent Title

Submitted Date

Granted Date

US9126989 COMPOUND AND METHODS FOR TREATING LONG QT SYNDROME
2014-07-31
2015-02-05
US9193694 FUSED HETEROCYCLIC COMPOUNDS AS ION CHANNEL MODULATORS
2013-09-26
2014-05-15
US9125916 METHODS OF TREATING HYPERTROPHIC CARDIOMYOPATHY
2014-07-28
2015-02-05
US2016332976 PROCESSES FOR PREPARING FUSED HETEROCYCLIC ION CHANNEL MODULATORS
2016-05-02
US2015283149 METHODS OF TREATING PATIENTS HAVING IMPLANTABLE CARDIAC DEVICES
2015-03-20
2015-10-08
Patent ID

Patent Title

Submitted Date

Granted Date

US2015045305 COMBINATION THERAPIES USING LATE SODIUM ION CHANNEL BLOCKERS AND POTASSIUM ION CHANNEL BLOCKERS
2013-01-25
2015-02-12
US2016332977 PROCESSES FOR PREPARING FUSED HETEROCYCLIC ION CHANNEL MODULATORS
2016-05-02
US9598435 FUSED HETEROCYCLIC COMPOUNDS AS ION CHANNEL MODULATORS
2015-10-01
2016-04-07
US2015225384 PROCESSES FOR PREPARING FUSED HETEROCYCLIC ION CHANNEL MODULATORS
2015-02-13
2015-08-13
US9273038 SOLID FORMS OF AN ION CHANNEL MODULATOR
2015-02-12
2015-08-13
Patent ID

Patent Title

Submitted Date

Granted Date

US9676760 FUSED HETEROCYCLIC COMPOUNDS AS ION CHANNEL MODULATORS
2016-05-11
US8697863 Fused heterocyclic compounds as ion channel modulators
2013-03-07
2014-04-15
US8586732 Fused heterocyclic compounds as ion channel modulators
2012-06-29
2013-11-19
US2017007617 INTRAVENOUS FORMULATIONS OF A LATE SODIUM CURRENT INHIBITOR
2016-07-06
US2014329755 COMBINATION THERAPY FOR THE TREATMENT OF ARRHYTHMIAS OR HEART FAILURE
2014-04-30
2014-11-06

/////////////////ELECLAZINE, GS-6615, GS 6615, элеклазин إيليكلازين 依来克秦 Phase III,  Long QT syndrome, orphan drug designation, Long QT syndrome

C1COC2=C(C=C(C=C2)C3=CC=C(C=C3)OC(F)(F)F)C(=O)N1CC4=NC=CC=N4

LASMIDITAN


Lasmiditan skeletal.svg

LASMIDITAN, COL-144 , LY-573144

613677-28-4 HYDROCHLORIDE
439239-90-4 (free base)

2,4,6-Trifluoro-N-[6-(1-methylpiperidin-4-ylcarbonyl)pyridin-2-yl]benzamide

2,4,6-trifluoro-N-{6-[(1-methylpiperidin-4-yl)carbonyl]pyridin-2-yl}benzamide

CoLucid Pharmaceuticals, PHASE 3, MIGRAINE

UNII:760I9WM792

Lasmiditan succinate; UNII-W64YBJ346B; Lasmiditan succinate [USAN]; W64YBJ346B; 439239-92-6; Lasmiditan succinate (USAN)

Lasmiditan succinate.png

Molecular Formula: C42H42F6N6O8
Molecular Weight: 872.822 g/mol

Lasmiditan (COL-144) is an investigational drug for the treatment of acute migraine. It is being developed by Eli Lilly and is in phase III clinical trials. It is a first-in-class “neurally acting anti-migraine agent” ditan.

WO-2018010345,  from Solipharma and the inventor on this API. Eli Lilly , following its acquisition of CoLucid Pharmaceuticals , is developing lasmiditan, a 5-HT 1f agonist, for treating acute migraine.

WATCH THIS SPACE, SYNTHESIS COMING………..

noname01

 

SYN 2

noname01

Mechanism of action

Lasmiditan is a serotonin receptor agonist that, like the unsuccessful LY-334,370, selectively binds to the 5-HT1F receptor subtype. A number of triptans have been shown to act on this subtype as well, but only after their affinity for 5-HT1B and 5-HT1D has been made responsible for their anti-migraine activity. The lack of affinity for these receptors might result in fewer side effects related to vasoconstriction compared to triptans in susceptible patients, such as those with ischemic heart diseaseRaynaud’s phenomenon or after a myocardial infarction,[1] although a 1998 review has found such side-effects to rarely occur in patients taking triptans.[2][3]

Discovery and development

Lasmiditan was discovered by Eli Lilly and Company and was out-licensed to CoLucid Pharmaceuticals in 2006, until CoLucid was bought by Eli Lilly in 2017 to reacquire the drug.[4] The drug is protected by patents until 2031.[5]

Phase II clinical trials for dose finding purposes were completed in 2007 for an intravenous form[6] and in early 2010 for an oral form.[7]Two separate Phase III clinical trials for the oral version are currently ongoing under special protocol agreements with the US Food and Drug Administration (FDA). Eli Lilly has stated that they intend to submit a new drug application to the FDA in early 2018.[5]

As of 2017, three phase III clinical trials have been completed or are in progress. The SPARTAN trial compares placebo with 50, 100, and 200 mg of lasmiditan.[8] SAMURAI compared placebo with 100 and 200 mg doses of lasmidatin. In 2016, CoLucid announced that the trial had met its primary and secondary endpoints of patients being pain-free two hours after dosing.[5] GLADIATOR is an open-labelstudy comparing 100 and 200 mg doses of lasmidatin in patients that received the drug as part of a prior trial.[9] In August 2017 topline results from the SPARTAN trial showed that the drug induced met its primary and secondary endpoints in the trial. The primary result showed a statistically significant improvement in pain relief relative to placebo 2 hours after the first dose. The secondary result showed a statistically significantly greater percentage of patients were free of their most bothersome symptom (MBS) compared with placebo at two hours following the first dose. [10]

Novel crystalline forms of a 5-HT1F receptor agonist, particularly lasmiditan – designated as Forms 1-3 and A-D – processes for their preparation and compositions comprising them are claimed. Also claim is their use for treating anxiety, fatigue, depression, premenstrual syndrome, trauma syndrome, memory loss, dementia (including Alzheimer’s), autism, schizophrenia, attention deficit hyperactivity disorder, obsessive-compulsive disorder, epilepsy, anorexia nervosa, alcoholism, tobacco abuse, mutism and trichotillomania.

Biological Activity

Lasmiditan (also known as COL-144 and LY573144) is a high-affinity, highly selective serotonin (5-HT) 5-HT(1F) receptor agonist.

In vitro binding studies show a K(i) value of 2.21 nM at the 5-HT(1F) receptor, compared with K(i) values of 1043 nM and 1357 nM at the 5-HT(1B) and 5-HT(1D) receptors, respectively, a selectivity ratio greater than 470-fold. Lasmiditan showed higher selectivity for the 5-HT(1F) receptor relative to other 5-HT(1) receptor subtypes than the first generation 5-HT(1F) receptor agonist LY334370.

In two rodent models of migraine, oral administration of lasmiditan potently inhibited markers associated with electrical stimulation of the trigeminal ganglion (dural plasma protein extravasation, and induction of the immediate early gene c-Fos in the trigeminal nucleus caudalis).

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Image result for LASMIDITAN

Image result for LASMIDITAN

PATENT

WO 03084949

https://www.google.co.in/patents/WO2003084949A1?cl=en

8. 2,4,6-Trifluoro-N-[6-(l -methyl-piperidin-4-ylcarbonyl)-pyridin-2-yl]- benzamide mono-hydrochloride salt

Figure imgf000035_0001

Combine 2-amino-6-(l-methylpiperidin-4-ylcarbonyl)pyridine (0.20 g, 0.92 mmol), 2,4,6-Trifluorobenzoyl chloride (0.357 g, 1.84 mmol), and 1 ,4-Dioxane (10 mL), and stir while heating at reflux. After 3 hr., cool the reaction mixture to ambient temperature and concentrate. Load the concentrated mixture onto an SCX column (lOg), wash with methanol, and elute with 2M ammonia in methanol. Concentrate the eluent to obtain the free base of the title compound as an oil (0.365 g (>100%)). Dissolve the oil in methanol (5 mL) and treat with ammonium chloride (0.05 g, 0.92 mmol). Concentrate the mixture and dry under vacuum to obtain the title compound. HRMS Obs. m/z 378.1435, Calc. m/z 378.1429; m.p. 255°C (dec).

Examples

21. 2,4,6-Trifluoro-N-[6-(l-methyl-piperidin-4-ylcarbonyl)-pyridin-2-yl]- benzamide

Figure imgf000049_0001

Add triethylamine (10.67 mL, 76.70 mmol, 2.4 eq) to a solution of 2-amino-(6-(l- methylpiperidin-4-ylcarbonyl)-pyridine (7g, 31.96 mmol, 1 eq) in anhydrous THF (100 mL) under a nitrogen atmosphere. Add 2,4,6-triflubenzoylchloride (7.46g, 5 mL, 38.35 mmol, 1.20 eq) dropwise at room temperature. After 2 hrs., add additional 2,4,6- triflubenzoylchloride (0.75 mL, 0.15 eq) and triethylamine (1.32 mL, 0.3 eq) to the reaction mixture and agitate the mixture for an additional 3 hrs. Quench the reaction with distilled water (10 mL) and 30%o NaOH (15 mL). Stir the resulting biphasic system for 1 hour and then separate the phases. Extract the organic fraction by adding H2O (75 mL) and acetic acid (12 mL), followed by cyclohexane (70 mL). Wash the organic fraction with H2O (50 mL) containing acetic acid (1 mL). Combine all the aqueous fractions and washes and neutralize the mixture with 30% NaOH (15 mL). Extract with methyl-tert- butyl ether (MTBE) (3×50 mL). Combine the organic fractions and dry with MgSO4, filter, concentrate under reduce pressure, and vacuum dry at room temperature, to obtain the title compound as a light-brown solid (11.031 g, 91 % yield).

Mass spectrum, (Electrospray) m/z = 378 (M+l); Η NMR (250 MHz, Chloroform-D) ppm 1.54 (m, 2 H) 2.02 (m, 2 H) 2.13 (t, J=l 1.48 Hz, 2 H) 2.29 (s, 3 H) 2.80 (m, J=l 1.96 Hz, 1 H) 3.56 (m, 1 H) 4.26 (d, J=7.87 Hz, 1 H) 6.17 (d, J=8.50 Hz, 1 H) 6.75 (m, 2 H) 7.45 (t, J=7.87 Hz, 1 H) 7.53 (m, 1 H) 7.95 (s, 1 H); 13C-NMR: (62.90 MHz, Chloroform-D) ppm 202.78; 162.6 (dm C-F-couplings); 162.0 (m C-F-couplings); 160.1 (m C-F-couplings); 158.1 ; 150.0; 139.7; 1 19.3; 1 17.9; 1 10.2 (m C-F-couplings); 100.9 (m C-F-couplings); 55.2; 46.5; 41.9; 28.1

22. 2,4,6-Trifluoro-N-[6-(l-methyl-piperidin-4-ylcarbonyl)-pyridin-2-yl]- benzamide mono-hydrochloride salt

Figure imgf000049_0002

Dissolve 2,4,6-trifluoro-N-[6-(l-methylpiperidin-4-ylcarbonyl)-pyridin-2-yl]- benzamide – free base (5g, 23.26mmol) in isopropanol (50 mL) at room temperature and add a solution of 3.3 M diethylether/HCl (8 mL). Heat the reaction mixture under reflux for 30 minutes. Cool the reaction mixture to room temperature and agitate for 2 hrs. Filter the resulting white precipitate and rinse with isopropanol (5 mL). Dry the residual solid under reduce pressure at 40°C overnight to obtain the title compound (5.12 g, 93% yield). M.p. 223-224°C (sublimation); Η NMR (400 MHz, d6-DMSO) d ppm 1.94 (m, 2 H) 2.14 (m, J=11.15 Hz, 2 H) 2.74 (s, 3 H) 2.99 (m, J=9.19 Hz, 2 H) 3.49 (m, J=1 1.15 Hz, 2 H) 3.77 (m, 1 H) 7.41 (t, J=8.71 Hz, 2 H) 7.78 (d, J=7.43 Hz, 1 H) 8.10 (t, J=7.92 Hz, 1 H) 8.37 (d, J=6.85 Hz, 1 H) 10.50 (s, 1 H) 1 1.51 (s, 1 H); 13C-NMR: (100.61 MHz, Chloroform-D) ppm 200.7; 130.6-158.0 (m, C-F-couplings); 150.4; 150.1; 140.2; 118.5; 1 18.2; 11 1.9; 101.3 (t, C-F couplings); 52.8; 42.6; 25.2

23. 2,4,6-Trifluoro-N-[6-(l-methyl-piperidine-4-carbonyl)-pyridin-2-yl]- benzamide hemi-succinate salt

Figure imgf000050_0001

Add succinic acid (0.25g, 2.148 mmol, 0.5eq) to a solution of 2,4,6-trifluoro-N-[6-

(l-methyl-piperidin-4-ylcarbonyl)-pyridin-2-yl]-benzamide – free base (1.62g, 4.297 mmol, leq) in acetone (16.2 mL), at room temperature. Warm the solution under reflux for 30 minutes. Cool the solution to room temperature and filter off the resulting white precipitate. Rinse the precipitate with acetone (0.2 mL) and dry under vacuum at 50°C for 16 hours to provide the title compound (1.5g, 80% yield). M.p. 198.5°C; mass spectrum (Electrospray) m/z = 495.45

The following examples are prepared by combinatorial chemistry techniques as follows:

Examples 24-54

Figure imgf000050_0002

Combine R-acid (300 μL of 0.5M solution in dimethylformamide (DMF)), HATU (57 mg, 0.15 mmol), collidine (19 μL, 0.15 mmol), 2-amino-(6-(l-methylpiperidin-4- ylcarbonyl)-pyridine and DMF (1.5 mL), and agitate for 48 hr. Dilute the reaction mixture with 10% acetic acid in methanol (0.5 L). Load the resulting reaction mixture onto a 2 g SCX column. Wash the column thoroughly with methanol and then elute with 1 M ammonia in methanol. Concentrate the eluent and further purify the product by high- throughput mass guided chromatography. This procedure is repeated in parallel for examples 24-54.

Examples 55-58

Figure imgf000051_0001

Heat R-acid chloride (300 μL of 0.5M solution in pyridine) to 55°C, add 2-amino- (6-(l-methylpiperidin-4-ylcarbonyl)-pyridine (200 μL of 0.5M solution in pyridine), and continue heating the reaction mixture for 24 hr. Concentrate the reaction mixture and then dilute with 10% Acetic acid in methanol (0.5 mL) and methanol (0.5 mL). Load the resulting reaction mixture directly onto a 2 g SCX column. Thoroughly wash the column with methanol and then elute the column with 1 M ammonia in methanol. Concentrate the eluent and then further purify the product by high- throughput mass guided chromatography. This procedure is repeated in parallel for examples 55-58.

Examples 59-71

Figure imgf000051_0002

Heat 2-amino-(6-(l-methylpiperidin-4-ylcarbonyl)-pyridine (200 μL of 0.5M solution in pyridine) to 55°C then add R-acid chloride (0.10 mmol), heat for 2 hr. Concentrate the reaction mixture and then dilute with 10% Acetic acid in methanol (0.5 mL) and methanol (0.5 mL). Load the resulting reaction mixture directly onto a 2 g SCX column. Thoroughly wash the column with methanol and then elute the column with 1 M ammonia in methanol. Concentrate the eluent and then further purify the product by high-throughput mass guided chromatography. This procedure is repeated in parallel for examples 59-71.

PATENT

WO 2018010345

Lasmiditan, also known as COL-144, LY573144, is a 5-HT 1F receptor agonist. Can be used to inhibit neuronal protein extravasation, to treat or prevent migraine in patients with diseases or conditions associated with other 5-HT 1F receptor dysfunction. The chemical name is 2,4,6-trifluoro-N- [6 – [(1 -methylpiperidin-4-yl) carbonyl] -pyridin- 2-yl] -benzamide, which has the chemical structure shown below I) shows:
Lasmiditan is a new and selective 5-HT 1F receptor agonist. It acts against migraine and other 5-HT 1F receptor related diseases by enhancing 5-HT 1F receptor activation while avoiding vasoconstrictive activity and inhibiting neuronal protein extravasation such as Migraine (including migraine, migraine headache, neurovascular headache), general pain, trigeminal neuralgia, anxiety, panic disorder, depression, post traumatic syndrome, dementia and the like.
Patent document CN100352817C reports on Lasmiditan, Lasmiditan hemisuccinate and Lasmiditan hydrochloride and the synthetic preparation thereof, and discloses the mass spectra of Lasmiditan, Lasmiditan hemisuccinate and Lasmiditan hydrochloride, 1 H-NMR, 13 C -NMR detection data and the melting points of Lasmiditan hemisuccinate and Lasmiditan hydrochloride. The inventor of the present invention has found that Lasmiditan, which is obtained according to the preparation method of Example 17 and Example 21 in CN100352817C, is a light brown oily amorphous substance, which has the defects of instability, moisture absorption and poor morphology.
Example 8 of patent document CN100352817C reports the preparation of Lasmiditan hydrochloride, which mentions Lasmiditan free base as an oily substance. The Lasmiditan hydrochloride obtained according to the preparation method of Example 8 in CN100352817 is a white amorphous substance which also has the disadvantages of unstable crystalline form, high hygroscopicity and poor topography.
The synthesis of Lasmiditan hemisuccinate intermediate, including Lasmiditan and Lasmiditan hydrochloride, is reported in Example 2 of U.S. Patent No. 8,697,876 B2. The inventor’s study found that Lasmiditan prepared according to US8697876B2 is also a pale brown oily amorphous substance and Lasmiditan hydrochloride is also a white amorphous substance.
In view of the deficiencies in the prior art, there is still a need in the art for the development of crystalline polymorphic Lasmiditan solid forms with more improved properties to meet the rigorous requirements of pharmaceutical formulations for physico-chemical properties such as morphology, stability and the like of active materials.
Preparation 1 Preparation of Lasmiditan (Prior Art)
Lasmiditan was prepared as described in Example 21 of CN100352817C by the following procedure: Triethylamine (10.67 mL, 76.70 mmol, 2.4 equiv) was added to a solution of 2-amino- (6- (1-methylpiperidine -4-yl) -carbonyl) -pyridine (7 g, 31.96 mmol, 1 eq) in dry THF (100 mL). 2,4,6-Trifluorobenzoyl chloride (7.46 g, 5 mL, 38.35 mmol, 1.20 equiv.) Was added dropwise at room temperature. After 2 hours, an additional 2,4,6-trifluorobenzoyl chloride (0.75 mL, 0.15 eq) and triethylamine (1.32 mL, 0.3 eq) were added to the reaction mixture and the mixture was stirred for a further 3 h. The reaction was quenched with distilled water (10 mL) and 30% NaOH (15 mL). The resulting two-phase system was stirred for 1 hour, then the two phases were separated. By addition of H 2 to extract the organic portion O (75mL) and acetic acid (12mL), followed by addition of cyclohexane (70mL). The organic portion was washed with water (50 mL) containing acetic acid (1 mL). All aqueous phases were combined, washed and neutralized with 30% NaOH (15 mL). Extract with methyl tert-butyl ether (MTBE) (3 x 50 mL). The organic phases were combined, dried MgS04 . 4 dried, filtered, and concentrated under reduced pressure and dried in vacuo at room temperature to give the title compound as a pale brown solid (11.031g, 91% yield).
The 1 H-NMR (CDCl 3 ) data of the product are as follows:
1 H NMR (400 MHz, CHLOROFORM-D) ppm 1.54 (m, 2H) 2.02 (m, 2H) 2.13 (t, J = 18.37 Hz, 2H) 2.29 (s, 3.56 (d, J = 12.59 Hz, 1H) 6.17 (d, J = 13.6 Hz, 1H) 6.75 (m, 2H) 7.45 (t, J = 12.59 Hz, 1H) 7.53 (m, 1H ) 7.95 (s, 1H).
The isothermal adsorption curve shown in Figure 5, in the 0% to 80% relative humidity range of 9.5% weight change.
The above characterization results show that Lasmiditan obtained by the preparation method of Example 21 according to CN100352817C is amorphous.
Preparation 2 Preparation of Lasmiditan hydrochloride (Prior Art)
The Lasmiditan hydrochloride was prepared as described in Example 8 of CN100352817C by the following procedure: A mixture of 2-amino-6- (1-methylpiperidin-4-yloxy) pyridine Trifluorobenzoyl chloride (3.57 g, 18.4 mmol) and 1,4-dioxane (100 mL) were combined and heated to reflux with heating. After 3 hours, cool the reaction mixture to room temperature, reduce pressure and concentrate. The concentrated mixture was loaded onto a SCX column (10 g), washed with methanol and eluted with 2M ammonia in methanol. The eluate was concentrated to give the title compound as an oily free base (3.65 g (> 100%)). The oil was dissolved in methanol (50 mL) and treated with ammonium chloride (0.5 g, 9.2 mmol). The mixture was concentrated and dried in vacuo to give a white amorphous.
IC characterization showed that Lasmiditan hydrochloride salt formed by Lasmiditan and hydrochloric acid in a molar ratio of 1: 1.
The XRPD pattern shown in Figure 19, no diffraction peaks, no amorphous.
The PLM pattern is shown in Figure 20 as an irregular, unpolarized solid.
The isotherm adsorption curve is shown in FIG. 21, with a weight change of 8.1% in a relative humidity range of 0% to 80%.
The above characterization results show that: Lasmiditan hydrochloride obtained by the preparation method of Example 8 with reference to CN100352817C is amorphous.
Example 1
Take 500mg of Lasmiditan of Preparation 1, add 1mL methanol solution containing 5% water to clarify, evaporate the crystals at room temperature and evaporate dry after 1 day to obtain 487mg Lasmiditan Form 1 in 95% yield.

References

  1.  “Molecule of the Month July 2010: Lasmiditan hydrochloride”Prous Science. Retrieved 2011-08-03.
  2.  Dahlöf, CG; Mathew, N (1998). “Cardiovascular safety of 5HT1B/1D agonists–is there a cause for concern?”. Cephalalgia : an international journal of headache18 (8): 539–45. doi:10.1046/j.1468-2982.1998.1808539.xPMID 9827245.
  3.  Mutschler, Ernst; Geisslinger, Gerd; Kroemer, Heyo K.; Schäfer-Korting, Monika (2001). Arzneimittelwirkungen (in German) (8th ed.). Stuttgart: Wissenschaftliche Verlagsgesellschaft. p. 265. ISBN 978-3-8047-1763-3OCLC 47700647.
  4.  http://www.fiercebiotech.com/biotech/lilly-buys-migraine-biotech-colucid-for-960m-and-drug-it-out-licensed
  5.  http://adisinsight.springer.com/drugs/800028519
  6.  Clinical trial number NCT00384774 for “A Placebo-Controlled Adaptive Treatment Assignment Study of Intravenous COL-144 in the Acute Treatment of Migraine” at ClinicalTrials.gov
  7.  Clinical trial number NCT00883051 for “Dose-ranging Study of Oral COL-144 in Acute Migraine Treatment” at ClinicalTrials.gov
  8. Clinical trial number NCT02605174 for “Three Doses of Lasmiditan (50 mg, 100 mg and 200 mg) Compared to Placebo in the Acute Treatment of Migraine (SPARTAN)” at ClinicalTrials.gov
  9.  Clinical trial number NCT02565186 for “An Open-label, Long-term, Safety Study of Lasmiditan for the Acute Treatment of Migraine (GLADIATOR)” at ClinicalTrials.gov
  10.  https://investor.lilly.com/releasedetail.cfm?ReleaseID=1036101
Lasmiditan
Lasmiditan skeletal.svg
Clinical data
Routes of
administration
By mouthintravenous
ATC code
  • none
Legal status
Legal status
  • Investigational
Identifiers
CAS Number
PubChem CID
IUPHAR/BPS
ChemSpider
UNII
KEGG
Chemical and physical data
Formula C19H18F3N3O2
Molar mass 377.36 g/mol
3D model (JSmol)

/////////////LASMIDITAN, phase III, LILY, COL-144 , LY-573144, CoLucid Pharmaceuticals, PHASE 3, MIGRAINE

CN1CCC(CC1)C(=O)C2=NC(=CC=C2)NC(=O)C3=C(C=C(C=C3F)F)F.CN1CCC(CC1)C(=O)C2=NC(=CC=C2)NC(=O)C3=C(C=C(C=C3F)F)F.C(CC(=O)O)C(=O)O

Ubrogepant, MK-1602


imgUbrogepant.pngImage result for UbrogepantImage result for Ubrogepant

Ubrogepant, MK-1602

(S)-N-((3S,5S,6R)-6-methyl-2-oxo-5-phenyl-1-(2,2,2-trifluoroethyl)piperidin-3-yl)-2′-oxo-1′,2′,5,7-tetrahydrospiro[cyclopenta[b]pyridine-6,3′-pyrrolo[2,3-b]pyridine]-3-carboxamide

(3’S)-N-[(3S,5S,6R)-6-methyl-2-oxo-5-phenyl-1-(2,2,2-trifluoroethyl)piperidin-3-yl]-2′-oxo-1′,2′,5,7-tetrahydrospiro[cyclopenta[b]pyridine-6,3′-pyrrolo[2,3-b]pyridine]-3-carboxamide
(6S)-N-[(3S,5S,6R)-6-Methyl-2-oxo-5-phenyl-1-(2,2,2-trifluoroethyl)-3-piperidinyl]-2′-oxo-1′,2′,5,7-tetrahydrospiro[cyclopenta[b]pyridine-6,3′-pyrrolo[2,3-b]pyridine]-3-carboxamide
Spiro[6H-cyclopenta[b]pyridine-6,3′-[3H]pyrrolo[2,3-b]pyridine]-3-carboxamide, 1′,2′,5,7-tetrahydro-N-[(3S,5S,6R)-6-methyl-2-oxo-5-phenyl-1-(2,2,2-trifluoroethyl)-3-piperidinyl]-2′-oxo-, (6S)-

CAS: 1374248-77-7
Chemical Formula: C29H26F3N5O3

Molecular Weight: 549.5542

UNII-AD0O8X2QJR

CAS TRIHYDRATE 1488325-95-6

CAS MONOHYDRATE 1488327-13-4

  • Originator Merck & Co
  • Class Amides; Antimigraines; Fluorine compounds; Small molecules; Spiro compounds
  • Mechanism of Action Calcitonin gene-related peptide receptor antagonists
  • Phase III Migraine, Allergan

Most Recent Events

  • 01 Sep 2016 Allergan initiates a phase III extension trial for Migraine in USA (PO, Tablet) (NCT02873221)
  • 12 Aug 2016 Allergan plans a phase III trial for Migraine in USA (PO) (NCT02867709)
  • 01 Aug 2016 Allergan initiates a phase III trial for Migraine in USA (PO) (NCT02867709)

Image result for Ubrogepant

Image result for Ubrogepant

Process for making piperidinone carboxamide indane and azainane derivatives, which are CGRP receptor antagonists useful for the treatment of migraine. This class of compounds is described in U.S. Patent Application Nos. 13/293,166 filed November 10, 2011 , 13/293, 177 filed November 10, 2011 and 13/293,186 filed November 10, 2011, and PCT International Application Nos. PCT/US11/60081 filed November 10, 2011 and PCT/US 11/60083 filed November 10, 2011.

CGRP (Calcitonin Gene-Related Peptide) is a naturally occurring 37-amino acid peptide that is generated by tissue-specific alternate processing of calcitonin messehger RNA and is widely distributed in the central and peripheral nervous system. CGRP is localized predominantly in sensory afferent and central neurons and mediates several biological actions, including vasodilation. CGRP is expressed in alpha- and beta-forms that vary by one and three amino acids in the rat and human, respectively. CGRP-alpha and CGRP-beta display similar biological properties. When released from the cell, CGRP initiates its biological responses by binding to specific cell surface receptors that are predominantly coupled to the activation of adenylyl cyclase. CGRP receptors have been identified and pharmacologically evaluated in several tissues and cells, including those of brain, cardiovascular, endothelial, and smooth muscle origin.

Based on pharmacological properties, these receptors are divided into at least two subtypes, denoted CGRPi and CGRP2. Human oc-CGRP-(8-37), a fragment of CGRP that lacks seven N-terminal amino acid residues, is a selective antagonist of CGRP l, whereas the linear analogue of CGRP, diacetoamido methyl cysteine CGRP ([Cys(ACM)2,7]CGRP), is a selective agonist of CGRP2. CGRP is a potent neuromodulator that has been implicated in the pathology of cerebrovascular disorders such as migraine and cluster headache. In clinical studies, elevated levels of CGRP in the jugular vein were found to occur during migraine attacks (Goadsby et al., Ann. Neurol., 1990, 28, 183-187), salivary levels of CGRP are elevated in migraine subjects between attacks (Bellamy et al., Headache, 2006, 46, 24-33), and CGRP itself has been shown to trigger migrainous headache (Lassen et al., Cephalalgia, 2002, 22, 54-61). In clinical trials, the CGRP antagonist BIBN4096BS has been shown to be effective in treating acute attacks of migraine (Olesen et al., New Engl. J. Med., 2004, 350, 1104-1110) and was able to prevent headache induced by CGRP infusion in a control group (Petersen et al., Clin. Pharmacol. Ther., 2005, 77, 202-213).

CGRP-mediated activation of the trigeminovascular system may play a key role in migraine pathogenesis. Additionally, CGRP activates receptors on the smooth muscle of intracranial vessels, leading to increased vasodilation, which is thought to contribute to headache pain during migraine attacks (Lance, Headache Pathogenesis: Monoamines, Neuropeptides, Purines and Nitric Oxide, Lippincott-Raven Publishers, 1997, 3-9). The middle meningeal artery, the principle artery in the dura mater, is innervated by sensory fibers from the trigeminal ganglion which contain several neuropeptides, including CGRP. Trigeminal ganglion stimulation in the cat resulted in increased levels of CGRP, and in humans, activation of the trigeminal system caused facial flushing and increased levels of CGRP in the external jugular vein (Goadsby et al, Ann. Neurol., 1988, 23, 193-196). Electrical stimulation of the dura mater in rats increased the diameter of the middle meningeal artery, an effect that was blocked by prior administration of CGRP(8-37), a peptide CGRP antagonist (Williamson et al., Cephalalgia, 1997, 17, 525-531). Trigeminal ganglion stimulation increased facial blood flow in the rat, which was inhibited by CGRP(8-37) (Escott et al., Brain Res. 1995, 669, 93-99). Electrical stimulation of the trigeminal ganglion in marmoset produced an increase in facial blood flow that could be blocked by the non-peptide CGRP antagonist BIBN4096BS (Doods et al., Br. J.Pharmacol., 2000, 129, 420-423). Thus the vascular effects of CGRP may be attenuated, prevented or reversed by a CGRP antagonist.

CGRP-mediated vasodilation of rat middle meningeal artery was shown to sensitize neurons of the trigeminal nucleus caudalis (Williamson et al., The CGRP Family: Calcitonin Gene-Related Peptide (CGRP), Amylin, and Adrenomedullin, Landes Bioscience, 2000, 245-247). Similarly, distention of dural blood vessels during migraine headache may sensitize trigeminal neurons. Some of the associated symptoms of migraine, including extracranial pain and facial allodynia, may be the result of sensitized trigeminal neurons (Burstein et al., Ann. Neurol. 2000, 47, 614-624). A CGRP antagonist may be beneficial in attenuating, preventing or reversing the effects of neuronal sensitization.

The ability of the compounds to act as CGRP antagonists makes them useful pharmacological agents for disorders that involve CGRP in humans and animals, but particularly in humans. Such disorders include migraine and cluster headache (Doods, Curr Opin Inves Drugs, 2001, 2 (9), 1261-1268; Edvinsson et al., Cephalalgia, 1994, 14, 320-327); chronic tension type headache (Ashina et al., Neurology, 2000, 14, 1335-1340); pain (Yu et al., Eur. J. Pharm., 1998, 347, 275-282); chronic pain (Hulsebosch et al., Pain, 2000, 86, 163-175);neurogenic inflammation and inflammatory pain (Holzer, Neurosci., 1988, 24, 739-768; Delay-Goyet et al., Acta Physiol. Scanda. 1992, 146, 537-538; Salmon et al., Nature Neurosci., 2001, 4(4), 357-358); eye pain (May et al. Cephalalgia, 2002, 22, 195-196), tooth pain (Awawdeh et al., Int. Endocrin. J., 2002, 35, 30-36), non-insulin dependent diabetes mellitus (Molina et al., Diabetes, 1990, 39, 260-265); vascular disorders; inflammation (Zhang et al, Pain, 2001, 89, 265), arthritis, bronchial hyperreactivity, asthma, (Foster et al., Ann. NY Acad. Sci., 1992, 657, 397-404; Schini et al., Am. J. Physiol., 1994, 267, H2483-H2490; Zheng et al., J. Virol., 1993, 67, 5786-5791); shock, sepsis (Beer et al., Crit. Care Med., 2002, 30 (8), 1794-1798); opiate withdrawal syndrome (Salmon et al., Nature Neurosci., 2001, 4(4), 357-358); morphine tolerance (Menard et al., J. Neurosci., 1996, 16 (7), 2342-2351); hot flashes in men and women (Chen et al., Lancet, 1993, 342, 49; Spetz et al., J. Urology, 2001, 166, 1720-1723); allergic dermatitis (Wallengren, Contact Dermatitis, 2000, 43 (3), 137-143); psoriasis; encephalitis, brain trauma, ischaemia, stroke, epilepsy, and neurodegenerative diseases (Rohrenbeck et al., Neurobiol. of Disease 1999, 6, 15-34); skin diseases (Geppetti and Holzer, Eds., Neurogenic Inflammation, 1996, CRC Press, Boca Raton, FL), neurogenic cutaneous redness, skin rosaceousness and erythema; tinnitus (Herzog et al., J. Membrane Biology, 2002, 189(3), 225); inflammatory bowel disease, irritable bowel syndrome, (Hoffman et al. Scandinavian Journal of Gastroenterology,2002, 37(4) 414-422) and cystitis. Of particular importance is the acute or prophylactic treatment of headache, including migraine and cluster headache.

Ubrogepant (MK-1602), an oral calcitonin gene-related peptide (CGRP) antagonist, is in phase III clinical development at Allergan for the acute treatment of migraine attacks.

In August 2015, the product was licensed to Allergan by Merck, for the development and marketing worldwide for the treatment of migraine.

Synthesis

WO 2013138418

CONTD………..

CONTD……….

Inventors Ian M. BellMark E. FraleySteven N. GallicchioAnthony GinnettiHelen J. MitchellDaniel V. PaoneDonnette D. StaasHeather E. StevensonCheng WangC. Blair Zartman
Applicant Merck Sharp & Dohme Corp.

Ian Bell

Ian Bell

Principal Scientist at Merck
Merck
Mark Fraley

Mark Fraley

Principal Scientist, Merck
Steven Gallicchio

Steven Gallicchio

Patent

 WO 2012064910

EXAMPLE 1

Figure imgf000072_0002

(65yN-[(3£5£ )-6-Methyl-2-oxo-5-pheny

i’,2′,5 J-tetrahvdrospiro[cyclopenta|^lpyridine-6,3′-pyrroloj2,3-¾lpyridine1-3-carboxamide (Benzotriazol- 1 -yloxy)tr/i,(dimethylamino)phosphonium hexafluorophosphate (1.89 g, 4.28 mmol) was added to a solution of (6S -2′-oxo- ,2,,5,7- tetrahydrospiro[cyclopenta[&]pyridine-6,3′-pyrrolo[2,3-&]pyridine]-3-carboxylic acid (described in Intermediate 1) (1.10 g, 3.92 mmol), (3JS’,55′,6J?)-3-amino-6-methyl~5~phenyl-l-(2,2,2- trifluoroethyl)piperidin-2-one hydrochloride (described in Intermediate 4) (1.15 g, 3.56 mmol), and NjiV-diisopropylethylamine (3.1 1 m.L, 17.8 mmol) in DMF (40 mL), and the resulting mixture was stirred at 23 °C for 3 h. The reaction mixture was then partitioned between saturated aqueous sodium bicarbonate solution (200 mL) and ethyl actetate (3 χ 200 mL). The combined organic layers were washed with brine, dried over sodium sulfate, and concentrated. The residue was purified by flash column chromatography on silica gel, eluting with hexanes initially, then grading to 100% EtOAc before stepping to 5% MeOH in EtOAc to afford the title compound as an amorphous solid, which was further purified by the following crystallization procedure. A solution of the amorphous product in a minimal amount of methanol required for dissolution was diluted with 10 volumes water, and the resulting slurry was seeded with crystalline product and stirred at 23 °C for 4 h. The solids were filtered, washed with water, and dried under a stream of nitrogen to give the title compound as a crystalline solid. HRMS: m/z = 550.2068, calculated m/z – 550.2061 for C29H27F3N503. lH NMR (500 MHz, CDC13) δ 8.91 (s, 1H), 8.70 (s, 1H), 8.17 (dd, 1H, J- 5.4, 1.5 Hz), 8.04 (s5 1H), 7.37 (m, 3H), 7.29 (t, 1H, J= 7.3 Hz), 7.21 (d, 2H, J= 7.3 Hz), 7.13 (dd, 1H, J = 7.3, 1.2 Hz), 6.89 (dd, 1H, J = 7.3, 5.4 Hz), 4.99- 4.90 (m, 1H), 4.53 (dt, 1H, J= 10.7, 6.6 Hz), 3.94 (p, 1H, J = 5.9 Hz), 3.78 (d, 1H, J = 17.1 Hz), 3.67 (d, 1H, J- 16.4 Hz), 3.65 (m, 1H), 3.34-3.26 (m, 1H), 3.28 (d, 1H, J- 17.1 Hz), 3.17 (d, 1H, J = 16.6 Hz), 2.79 (m, 1H), 2.58 (q, 1H, J – 12.7 Hz), 1.07 (d, 3H, J= 6.6 Hz).

PATENT

WO 2013169348

(5)-N-((3^,5^,6i?)-6-Methyl-2-oxo-5-phenyl 2,2,2-trifluoroethyl)piperidine-3-yl)-2*-oxo- l\2 5,7-tetrahydrospiro[cyclopenta[¾]pyridine-6,3′-pyrrolo[2,3-¾]pyridine]-3-carboxam trihydrate (15)

Figure imgf000054_0001

To a suspension of 11 (465 g, 96% wt, 0.99 mol) in iPAc (4.6 L) was added 5% aqueous K3PO4 (4.6 L). The mixture was stirred for 5 min. The organic layer was separated and washed with 5%> aqueous K3PO4 (4.6 L) twice and concentrated in vacuo and dissolved in acetonitrile (1.8 L).

To another flask was added 14 (303 g, 91.4 wt%>), acetonitrile (1.8 L) and water (1.8 L) followed by 10 N NaOH (99 mL). The resulting solution was stirred for 5 min at room temperature and the chiral amine solution made above was charged to the mixture and the container was rinsed with acetonitrile (900 mL). HOBT hydrate (164 g) was charged followed by EDC hydrochloride (283 g). The mixture was agitated at room temperature for 2.5 h. To the mixture was added iPAc (4.6 L) and organic layer was separated, washed with 5%> aqueous NaHC03 (2.3 L) followed by a mixture of 15%> aqueous citric acid (3.2 L) and saturated aqueous NaCl (1.2 L). The resulting organic layer was finally washed with 5%> aqueous NaHC03 (2.3 L). The organic solution was concentrated below 50 °C and dissolved in methanol (2.3 L). The solution was slowly added to a mixture of water (6 L) and methanol (600 mL) with ~ 2 g of seed crystal. And the resulting suspension was stirred overnight at room temperature. Crystals were filtered, rinsed with water/methanol (4 L, 10 : 1), and dried under nitrogen flow at room temperature to provide 15 (576 g, 97 % yield) as trihydrate.

Ή NMR (500 MHz, CDCI3): δ 10.15 (br s, 1 H), 8.91 (br s, 1 H), 8.21 (d, J= 6.0 Hz, 1 H), 8.16 (dd, J= 5.3, 1.5 Hz, 1 H), 8.01 (br s, 1 H), 7.39-7.33 (m, 2 H), 7.31-7.25 (m, 1 H), 7.22-7.20 (m, 2 H), 7.17 (dd, J= 7.4, 1.6 Hz, 1 H), 6.88 (dd, J= 7.4, 5.3 Hz, 1 H), 4.94 (dq, J= 9.3, 7.6 Hz, 1 H), 4.45-4.37 (m, 1 H), 3.94-3.87 (m, 1 H), 3.72 (d, J= 17.2 Hz, 1 H), 3.63-3.56 (m, 2 H), 3.38-3.26 (m, 1 H), 3.24 (d, J= 17.3 Hz, 1 H), 3.13 (d, J= 16.5 Hz, 1 H), 2.78 (q, J= 12.5 Hz, 1 H), 2.62-2.56 (m, 1 H), 1.11 (d, J= 6.5 Hz, 3 H); 13C NMR (126 MHz, CD3CN): δ 181.42, 170.63, 166.73, 166.63, 156.90, 148.55, 148.08, 141.74, 135.77, 132.08, 131.09, 130.08, 129.66, 129.56, 128.78, 128.07, 126.25 (q, J= 280.1 Hz), 119.41, 60.14, 53.07, 52.00, 46.41 (q, J= 33.3 Hz), 45.18, 42.80, 41.72, 27.79, 13.46; HRMS m/z: calcd for C29H26F3N503 550.2061 (M+H): found 550.2059.

Alternative procedure for 15:

Figure imgf000055_0001

13

To a suspension of 13 (10 g, 98 wt%, 23.2 mmol) in MTBE (70 mL) was added 0.6 N HCI (42 mL). The organic layer was separated and extracted with another 0.6 N HCI (8 mL). The combined aqueous solution was washed with MTBE (10 mL x3). To the resulting aqueous solution was added acetonitrile (35 mL) and 14 (6.66 g, 99 wt%). To the resulting suspension was neutralized with 29 % NaOH solution to pH 6. HOPO (0.26 g) was added followed by EDC hydrochloride (5.34 g). The mixture was stirred at room temperature for 6-12 h until the conversion was complete (>99%). Ethanol (30 ml) was added and the mixture was heated to 35 °C. The resulting solution was added over 2 h to another three neck flask containing ethanol (10 mL), water (30 mL) and 15 seeds (0.4 g). Simultaneously, water (70 mL) was also added to the mixture. The suspension was then cooled to 5 °C over 30 min and filtered. The cake was washed with a mixture of ethanol/water (1 :3, 40 mL). The cake was dried in a vacuum oven at 40 °C to give 15 trihydrate (13.7 g, 95%) as crystals.

PATENT

WO 2013138418

PATENT

US 9174989

CLIP

Practical Asymmetric Synthesis of a Calcitonin Gene-Related Peptide (CGRP) Receptor Antagonist Ubrogepant

 Department of Process Chemistry, MRL, 126 East Lincoln Avenues, Rahway, New Jersey 07065, United States
 Department of Process Chemistry, MSD Research Laboratories, Hertford Road, Hoddesdon, Hertford, Hertfordshire EN11 9BU, United Kingdom
§ Department of Process Chemistry, MRL, 770 Sumneytown Pike, West Point, Pennsylvania 19486, United States
 Codexis, Inc., 200 Penobscot Drive, Redwood City, California 94063, United States
 Shanghai SynTheAll Pharmaceutical Co. Ltd., 9 Yuegong Road, Jinshan District, Shanghai, 201507, China
Org. Process Res. Dev., Article ASAP
DOI: 10.1021/acs.oprd.7b00293

Abstract

Abstract Image

The development of a scalable asymmetric route to a new calcitonin gene-related peptide (CGRP) receptor antagonist is described. The synthesis of the two key fragments was redefined, and the intermediates were accessed through novel chemistry. Chiral lactam 2 was prepared by an enzyme mediated dynamic kinetic transamination which simultaneously set two stereocenters. Enzyme evolution resulted in an optimized transaminase providing the desired configuration in >60:1 syn/anti. The final chiral center was set via a crystallization induced diastereomeric transformation. The asymmetric spirocyclization to form the second fragment, chiral spiro acid intermediate 3, was catalyzed by a novel doubly quaternized phase transfer catalyst and provided optically pure material on isolation. With the two fragments in hand, development of their final union by amide bond formation and subsequent direct isolation is described. The described chemistry has been used to deliver over 100 kg of our desired target, ubrogepant.

(S)-N-((3S,5S,6R)-6-Methyl-2-oxo-5-phenyl-1-(2,2,2-trifluoroethyl)piperidin-3-yl)-2′-oxo-1′,2′,5,7-tetrahydrospiro[cyclopenta[b]pyridine-6,3′-pyrrolo[2,3-b]pyridine]-3-carboxamide Trihydrate (1)

………..of white solids as 1 trihydrate (95%).
1H NMR (500 MHz, CDCl3): δ 10.15 (br s, 1H); 8.91 (br s, 1H); 8.21 (d, J = 6.0 Hz, 1H); 8.16 (dd, J = 5.3, 1.5 Hz, 1H); 8.01 (br s, 1H); 7.39–7.33 (m, 2H); 7.31–7.25 (m, 1H); 7.22–7.20 (m, 2H); 7.17 (dd, J = 7.4, 1.6 Hz, 1H); 6.88 (dd, J = 7.4, 5.3 Hz, 1H); 4.94 (dq, J = 9.3, 7.6 Hz, 1H); 4.45–4.37 (m, 1H); 3.94–3.87 (m, 1H); 3.72 (d, J = 17.2 Hz, 1H); 3.63–3.56 (m, 2H); 3.38–3.26 (m, 1H); 3.24 (d, J = 17.3 Hz, 1H); 3.13 (d, J = 16.5 Hz, 1H); 2.78 (q, J = 12.5 Hz, 1H); 2.62–2.56 (m, 1H); 1.11 (d, J = 6.5 Hz, 3H);
13C NMR (126 MHz, CDCl3): δ 181.4, 170.6, 166.7, 166.6, 156.9, 148.6, 148.1, 141.7, 135.8, 132.1, 131.1, 130.1, 129.7, 129.6, 128.8, 128.1, 126.3 (q, J = 280.1 Hz), 119.4, 60.1, 53.1, 52.0, 46.4 (q, J = 33.3 Hz), 45.2, 42.8, 41.7, 27.8, 13.5;
HRMS m/z: calcd for C29H27F3N5O3: 550.2061 (M + H); found: 550.2059.

US7390798 * Feb 9, 2005 Jun 24, 2008 Merck & Co., Inc. Carboxamide spirolactam CGRP receptor antagonists
US20090054408 * Sep 6, 2005 Feb 26, 2009 Bell Ian M Monocyclic anilide spirolactam cgrp receptor antagonists
US20100160334 * Mar 5, 2010 Jun 24, 2010 Bell Ian M Tricyclic anilide spirolactam cgrp receptor antagonists
US20100179166 * Jun 2, 2008 Jul 15, 2010 Ian Bell Carboxamide heterocyclic cgrp receptor antagonists
US20120122899 * Nov 10, 2011 May 17, 2012 Merck Sharp & Dohme Corp. Piperidinone carboxamide azaindane cgrp receptor antagonists
US20120122900 * Nov 10, 2011 May 17, 2012 Merck Sharp & Dohme Corp. Piperidinone carboxamide azaindane cgrp receptor antagonists
US20120122911 * Nov 10, 2011 May 17, 2012 Merck Sharp & Dohme Corp. Piperidinone carboxamide azaindane cgrp receptor antagonists
Reference
1 * See also references of EP2849568A4
Citing Patent Filing date Publication date Applicant Title
CN105037210A * May 27, 2015 Nov 11, 2015 江苏大学 Alpha,beta-dehydrogenated-alpha-amino acid synthesis method
US9688660 Oct 28, 2016 Jun 27, 2017 Heptares Therapeutics Limited CGRP receptor antagonists
Patent ID

Patent Title

Submitted Date

Granted Date

US2016346198 NOVEL DISINTEGRATION SYSTEMS FOR PHARMACEUTICAL DOSAGE FORMS
2015-02-04
US2016346214 TABLET FORMULATION FOR CGRP ACTIVE COMPOUNDS
2015-01-30
Patent ID

Patent Title

Submitted Date

Granted Date

US2015112067 PROCESS FOR MAKING CGRP RECEPTOR ANTAGONISTS
2013-03-13
2015-04-23
US9174989 Process for making CGRP receptor antagonists
2013-03-12
2015-11-03
US2016220552 FORMULATIONS FOR CGRP RECEPTOR ANTAGONISTS
2014-09-11
2016-08-04
US2016130273 Process for Making CGRP Receptor Antagonists
2015-09-15
2016-05-12
US2017027925 PIPERIDINONE CARBOXAMIDE AZAINDANE CGRP RECEPTOR ANTAGONISTS
2016-10-14
Patent ID

Patent Title

Submitted Date

Granted Date

US8754096 Piperidinone carboxamide azaindane CGRP receptor antagonists
2011-11-10
2014-06-17
US8912210 Piperidinone carboxamide azaindane CGRP receptor antagonists
2011-11-10
2014-12-16
US8481556 Piperidinone carboxamide azaindane CGRP receptor antagonists
2011-11-10
2013-07-09
US9499545 PIPERIDINONE CARBOXAMIDE AZAINDANE CGRP RECEPTOR ANTAGONISTS
2014-09-12
2015-01-01
US9487523 PROCESS FOR MAKING CGRP RECEPTOR ANTAGONISTS
2013-09-19
2015-02-05

REFERENCES

1: Voss T, Lipton RB, Dodick DW, Dupre N, Ge JY, Bachman R, Assaid C, Aurora SK, Michelson D. A phase IIb randomized, double-blind, placebo-controlled trial of ubrogepant for the acute treatment of migraine. Cephalalgia. 2016 Aug;36(9):887-98. doi: 10.1177/0333102416653233. PubMed PMID: 27269043.

/////////////ubrogepant, MK-1602, Phase III,  Migraine

 O=C(C1=CN=C2C(C[C@@]3(C4=CC=CN=C4NC3=O)C2)=C1)N[C@@H]5C(N(CC(F)(F)F)[C@H](C)[C@H](C6=CC=CC=C6)C5)=O

TOZADENANT


Image result for TOZADENANT

Tozadenant

RO-449351
SYN-115

  • Molecular Formula C19H26N4O4S
  • Average mass 406.499 Da

A2 (3); A2a-(3); RO4494351; RO4494351-000; RO4494351-002; SYN-115

Phase III clinical trials at Biotie Therapies for the treatment of Parkinson’s disease as an adjunctive therapy with levodopa

1-Piperidinecarboxamide, 4-hydroxy-N-[4-methoxy-7-(4-morpholinyl)-2-benzothiazolyl]-4-methyl-
4-Hydroxy-N-[4-methoxy-7-(4-morpholinyl)-1,3-benzothiazol-2-yl]-4-methyl-1-piperidinecarboxamide
4-Hydroxy-N-[4-methoxy-7-(4-morpholinyl)-2-benzothiazolyl]-4-methyl-1-piperidinecarboxamide
4-Hydroxy-4-methyl-piperidine-1-carboxylic acid(4-methoxy-7-morpholin-4-yl-benzothiazol-2-yl)-amide
CAS 870070-55-6
  • Originator Roche
  • Developer Acorda Therapeutics
  • Class Amides; Antiparkinsonians; Benzothiazoles; Carboxylic acids; Morpholines; Piperidines; Small molecules
  • Mechanism of Action Adenosine A2A receptor antagonists

Highest Development Phases

  • Phase III Parkinson’s disease
  • Phase I Liver disorders

Most Recent Events

  • 30 Jun 2017 Biotie Therapies plans a phase I trial in Healthy volunteers in Canada (NCT03200080)
  • 30 Jun 2017 Phase-I clinical trials in Liver disorders (In volunteers) in USA (PO) (NCT03212313)
  • 27 Apr 2017 Acorda Therapeutics initiates enrolment in a phase III trial for Parkinson’s disease in Germany (EudraCT2016-003961-25)(NCT03051607)

Biotie Therapies Holding , under license from Roche , is developing tozadenant (phase 3, as of August 2017) for the treatment of Parkinson’s disease.

SYN-115, a potent and selective adenosine A2A receptor antagonist, is in phase III clinical trials at Biotie Therapeutics for the treatment of Parkinson’s disease, as an adjunjunctive therapy with levodopa. Phase 0 trials were are underway at the National Institute on Drug Abuse (NIDA) for the treatment of cocaine dependency, but no recent development has been reported.

The A2A receptor modulates the production of dopamine, glutamine and serotonin in several brain regions. In preclinical studies, antagonism of the A2A receptor resulted in increases in dopamine levels, which gave rise to the reversal of motor deficits.

Originally developed at Roche, SYN-115 was acquired by Synosia in 2007, in addition to four other drug candidates with potential for the treatment of central nervous system (CNS) disorders. Under the terms of the agreement, Synosia was responsible for clinical development and in some cases commercialization, while Roche retained the right to opt-in to two preselected programs.

In 2010, the compound was licensed to UCB by Synosia Therapeutics for development and commercialization worldwide.

In February 2011, Synosia (previously Synosis Therapeutics) was acquired by Biotie Therapeutics, and in 2014, Biotie regained global rights from UCB.

Image result for TOZADENANT

TOZADENANT.png

Image result for TOZADENANT

Figure

Representative examples of A2AAdoR antagonists.

Tozadenant, also known as 4-hydroxy-N-(4-methoxy-7-(4-morpholinyl)benzo[d]thiazol-2-yl)-4-methylpiperidine-l-carboxamide or SYN115, is an adenosine A2A receptor antagonist. The A2A receptor modulates the production of

dopamine, glutamine and serotonin in several brain regions. In preclinical studies, antagonism of the A2A receptor resulted in increases in dopamine levels, which gave rise to the reversal of motor deficits.

Tozadenant is currently phase III clinical trials for the treatment of Parkinson’s disease as an adjunctive therapy with levodopa. It has also been explored for the treatment of cocaine dependency.

Inventors Alexander FlohrJean-Luc MoreauSonia PoliClaus RiemerLucinda Steward
Original Assignee Alexander FlohrJean-Luc MoreauPoli Sonia MClaus RiemerLucinda Steward

(F. Hoffmann-La Roche AG)

Image result

Claus Riemer

Claus Riemer

Expert Scientist
Roche , Basel · Department of Medicinal Chemistry

Sonia Poli

Sonia Poli

PhD
Chief Scientific Officer – CSO
Addex Therapeutics , Genève · R&D
PhD
Principal Scientist

PAPER

Fredriksson, KaiLottmann, PhilipHinz, SonjaOnila, IounutShymanets, AliakseiHarteneck, ChristianMüller, Christa E.Griesinger, ChristianExner, Thomas E. – Angewandte Chemie – International Edition, 2017, vol. 56, 21, pg. 5750 – 5754, Angew. Chem., 2017, vol. 129, pg. 5844 – 5848,5

PAPER

Mancel, ValérieMathy, François-XavierBoulanger, PierreEnglish, StephenCroft, MarieKenney, ChristopherKnott, TarraStockis, ArmelBani, Massimo – Xenobiotica, 2017, vol. 47,  8, pg. 705 – 718

Paper

Design, Synthesis of Novel, Potent, Selective, Orally Bioavailable Adenosine A2A Receptor Antagonists and Their Biological Evaluation

Drug Discovery Facility, Advinus Therapeutics Ltd., Quantum Towers, Plot-9, Phase-I, Rajiv Gandhi Infotech Park, Hinjawadi, Pune 411 057, India
J. Med. Chem.201760 (2), pp 681–694
DOI: 10.1021/acs.jmedchem.6b01584
* Phone: +91 20 66539600. Fax: +91 20 66539620. E-mail: sujay.basu@advinus.com.
Abstract Image

Patent

https://www.google.com/patents/US20050261289

  • Adenosine modulates a wide range of physiological functions by interacting with specific cell surface receptors. The potential of adenosine receptors as drug targets was first reviewed in 1982. Adenosine is related both structurally and metabolically to the bioactive nucleotides adenosine triphosphate (ATP), adenosine diphosphate (ADP), adenosine monophosphate (AMP) and cyclic adenosine monophosphate (cAMP); to the biochemical methylating agent S-adenosyl-L-methione (SAM); and structurally to the coenzymes NAD, FAD and coenzyme A; and to RNA. Together adenosine and these related compounds are important in the regulation of many aspects of cellular metabolism and in the modulation of different central nervous system activities.
  • [0003]
    The adenosine receptors have been classified as A1, A2A, A2B and A3receptors, belonging to the family of G protein-coupled receptors. Activation of aderosine receptors by adenosine initiates signal transduction mechanisms. These mechanisms are dependent on the receptor associated G protein. Each of the adenosine receptor subtypes has been classically characterized by the adenylate cyclase effector system, which utilises cAMP as a second messenger. The A1and Areceptors, coupled with Gproteins inhibit adenylate cyclase, leading to a decrease in cellular cAMP levels, while A2A and A2Breceptors couple to Gproteins and activate adenylate cyclase, leading to an increase in cellular cAMP levels. It is known that the A1receptor system activates phospholipase C and modulates both potassium and calcium ion channels. The Asubtype, in addition to its association with adenylate cyclase, also stimulates phospholipase C and activates calcium ion channels.
  • [0004]
    The Areceptor (326-328 amino acids) was cloned from various species (canine, human, rat, dog, chick, bovine, guinea-pig) with 90-95% sequence identify among the mammalian species. The A2Areceptor (409-412 amino acids) was cloned from canine, rat, human, guinea pig and mouse. The A2B receptor (332 amino acids) was cloned from human and mouse and shows 45% homology with the human Aand A2A receptors. The Areceptor (317-320 amino acids) was cloned from human, rat, dog, rabbit and sheep.
  • [0005]
    The Aand A2A receptor subtypes are proposed to play complementary roles in adenosine’s regulation of the energy supply. Adenosine, which is a metabolic product of ATP, diffuses from the cell and acts locally to activate adenosine receptors to decrease the oxygen demand (A1) or increase the oxygen supply (A2A) and so reinstate the balance of energy supply: demand within the tissue. The actions of both subtypes is to increase the amount of available oxygen to tissue and to protect cells against damage caused by a short term imbalance of oxygen. One of the important functions of endogenous adenosine is preventing damage during traumas such as hypoxia, ischemia, hypotension and seizure activity.
  • [0006]
    Furthermore, it is known that the binding of the adenosine receptor agonist to mast cells expressing the rat Areceptor resulted in increased inositol triphosphate and intracellular calcium concentrations, which potentiated antigen induced secretion of inflammatory mediators. Therefore, the Areceptor plays a role in mediating asthmatic attacks and other allergic responses.
  • [0007]
    Adenosine is a neurotransmitter able to modulate many aspects of physiological brain function. Endogenous adenosine, a central link between energy metabolism and neuronal activity, varies according to behavioral state and (patho)physiological conditions. Under conditions of increased demand and decreased availability of energy (such as hypoxia, hypoglycemia, and/or excessive neuronal activity), adenosine provides a powerful protective feedback mechanism. Interacting with adenosine receptors represents a promising target for therapeutic intervention in a number of neurological and psychiatric diseases such as epilepsy, sleep, movement disorders (Parkinson or Huntington’s disease), Alzheimer’s disease, depression, schizophrenia, or addiction. An increase in neurotransmitter release follows traumas such as hypoxia, ischemia and seizures. These neurotransmitters are ultimately responsible for neural degeneration and neural death, which causes brain damage or death of the individual. The adenosine A1agonists mimic the central inhibitory effects of adenosine and may therefore be useful as neuroprotective agents. Adenosine has been proposed as an endogenous anticonvulsant agent, inhibiting glutamate release from excitatory neurons and inhibiting neuronal firing. Adenosine agonists therefore may be used as antiepileptic agents. Furthermore, adenosine antagonists have proven to be effective as cognition enhancers. Selective A2A antagonists have therapeutic potential in the treatment of various forms of dementia, for example in Alzheimer’s disease, and of neurodegenerative disorders, e.g. stroke. Adenosine A2A receptor antagonists modulate the activity of striatal GABAergic neurons and regulate smooth and well-coordinated movements, thus offering a potential therapy for Parkinsonian symptoms. Adenosine is also implicated in a number of physiological processes involved in sedation, hypnosis, schizophrenia, anxiety, pain, respiration, depression, and drug addiction (amphetamine, cocaine, opioids, ethanol, nicotine, and cannabinoids). Drugs acting at adenosine receptors therefore have therapeutic potential as sedatives, muscle relaxants, antipsychotics, anxiolytics, analgesics, respiratory stimulants, antidepressants, and to treat drug abuse. They may also be used in the treatment of ADHD (attention deficit hyper-activity disorder).
  • [0008]
    An important role for adenosine in the cardiovascular system is as a cardioprotective agent. Levels of endogenous adenosine increase in response to ischemia and hypoxia, and protect cardiac tissue during and after trauma (preconditioning). By acting at the Areceptor, adenosine Aagonists may protect against the injury caused by myocardial ischemia and reperfusion. The modulating influence of A2Areceptors on adrenergic function may have implications for a variety of disorders such as coronary artery disease and heart failure. A2Aantagonists may be of therapeutic benefit in situations in which an enhanced anti-adrenergic response is desirable, such as during acute myocardial ischemia. Selective antagonists at A2A Areceptors may also enhance the effectiveness of adenosine in terminating supraventricula arrhytmias.
  • [0009]
    Adenosine modulates many aspects of renal function, including renin release, glomerular filtration rate and renal blood flow. Compounds which antagonize the renal affects of adenosine have potential as renal protective agents. Furthermore, adenosine Aand/or A2Bantagonists may be useful in the treatment of asthma and other allergic responses or and in the treatment of diabetes mellitus and obesity.
  • [0010]

    Numerous documents describe the current knowledge on adenosine receptors, for example the following publications:

      • Bioorganic & Medicinal Chemistry, 6, (1998), 619-641,
      • Bioorganic & Medicinal Chemistry, 6, (1998), 707-719,
      • J. Med. Chem., (1998), 41, 2835-2845,
      • J. Med. Chem., (1998), 41, 3186-3201,
      • J. Med. Chem., (1998), 41, 2126-2133,
      • J. Med. Chem., (1999), 42, 706-721,
      • J. Med. Chem., (1996), 39, 1164-1171,
      • Arch. Pharm. Med. Chem., 332, 39-41, (1999),
      • Am. J. Physiol., 276, H1113-1116, (1999) or
      • Naunyn Schmied, Arch. Pharmacol. 362,375-381, (2000)
    EXAMPLE 14-Hydroxy-4-methyl-piperidine-1-carboxylic acid(4-methoxy-7-morpholin-4-yl-benzothiazol-2-yl)-amide (I)

  • [0065]
    To a solution of (4-methoxy-7-morpholin-4-yl-benzothiazol-2-yl)-carbamic acid phenyl ester (3.2 g, 8.3 mmol) and N-ethyl-diisopropyl-amine (4.4 ml, 25 mmol) in trichloromethane (50 ml) is added a solution of 4-hydroxy-4-methyl-piperidine in trichloromethane (3 ml) and tetrahydrofurane (3 ml) and the resulting mixture heated to reflux for 1 h. The reaction mixture is then cooled to ambient temperature and extracted with saturated aqueous sodium carbonate (15 ml) and water (2×5 ml). Final drying with magnesium sulphate and evaporation of the solvent and recrystallization from ethanol afforded the title compound as white crystals (78% yield), mp 236° C. MS: m/e=407(M+H+).

Figure US20050261289A1-20051124-C00013

Figure US20050261289A1-20051124-C00012Figure US20050261289A1-20051124-C00011

PATENT

WO-2017136375

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2017136375&recNum=1&maxRec=&office=&prevFilter=&sortOption=&queryString=&tab=PCTDescription

Novel deuterated forms of tozadenant are claimed. Also claimed are compositions comprising them and method of modulating the activity of adenosine A2A receptor (ADORA2A), useful for treating Parkinson’s diseases. Represents new area of patenting to be seen from CoNCERT Pharmaceuticals on tozadenant. ISR draws attention towards WO2016204939 , claiming controlled-release tozadenant formulations.

This invention relates to deuterated forms of morpholinobenzo[d]thiazol-2-yl)-4-methylpiperidine-1-carboxamide compounds, and pharmaceutically acceptable salts thereof. This invention also provides compositions comprising a compound of this invention and the use of such compositions in methods of treating diseases and conditions that are beneficially treated by administering an adenosine A2A receptor antagonist.

Many current medicines suffer from poor absorption, distribution, metabolism and/or excretion (ADME) properties that prevent their wider use or limit their use in certain indications. Poor ADME properties are also a major reason for the failure of drug candidates in clinical trials. While formulation technologies and prodrug strategies can be employed in some cases to improve certain ADME properties, these approaches often fail to address the underlying ADME problems that exist for many drugs and drug candidates. One such problem is rapid metabolism that causes a number of drugs, which otherwise would be highly effective in treating a disease, to be cleared too rapidly from the body. A possible solution to rapid drug clearance is frequent or high dosing to attain a sufficiently high plasma level of drug. This, however, introduces a number of potential treatment problems such as poor patient compliance with the dosing regimen, side effects that become more acute with higher doses, and increased cost of treatment. A rapidly metabolized drug may also expose patients to undesirable toxic or reactive metabolites.

[3] Another ADME limitation that affects many medicines is the formation of toxic or biologically reactive metabolites. As a result, some patients receiving the drug may experience toxicities, or the safe dosing of such drugs may be limited such that patients receive a suboptimal amount of the active agent. In certain cases, modifying dosing intervals or formulation approaches can help to reduce clinical adverse effects, but often the formation of such undesirable metabolites is intrinsic to the metabolism of the compound.

[4] In some select cases, a metabolic inhibitor will be co- administered with a drug that is cleared too rapidly. Such is the case with the protease inhibitor class of drugs that are used to treat HIV infection. The FDA recommends that these drugs be co-dosed with ritonavir, an inhibitor of cytochrome P450 enzyme 3A4 (CYP3A4), the enzyme typically responsible for their metabolism (see Kempf, D.J. et al., Antimicrobial agents and chemotherapy, 1997, 41(3): 654-60). Ritonavir, however, causes adverse effects and adds to the pill burden for HIV patients who must already take a combination of different drugs. Similarly, the

CYP2D6 inhibitor quinidine has been added to dextromethorphan for the purpose of reducing rapid CYP2D6 metabolism of dextromethorphan in a treatment of pseudobulbar affect.

Quinidine, however, has unwanted side effects that greatly limit its use in potential combination therapy (see Wang, L et al., Clinical Pharmacology and Therapeutics, 1994, 56(6 Pt 1): 659-67; and FDA label for quinidine at http://www.accessdata.fda.gov).

[5] In general, combining drugs with cytochrome P450 inhibitors is not a satisfactory strategy for decreasing drug clearance. The inhibition of a CYP enzyme’s activity can affect the metabolism and clearance of other drugs metabolized by that same enzyme. CYP inhibition can cause other drugs to accumulate in the body to toxic levels.

[6] A potentially attractive strategy for improving a drug’s metabolic properties is deuterium modification. In this approach, one attempts to slow the CYP-mediated metabolism of a drug or to reduce the formation of undesirable metabolites by replacing one or more hydrogen atoms with deuterium atoms. Deuterium is a safe, stable, non-radioactive isotope of hydrogen. Compared to hydrogen, deuterium forms stronger bonds with carbon. In select cases, the increased bond strength imparted by deuterium can positively impact the ADME properties of a drug, creating the potential for improved drug efficacy, safety, and/or tolerability. At the same time, because the size and shape of deuterium are essentially identical to those of hydrogen, replacement of hydrogen by deuterium would not be expected to affect the biochemical potency and selectivity of the drug as compared to the original chemical entity that contains only hydrogen.

[7] Over the past 35 years, the effects of deuterium substitution on the rate of metabolism have been reported for a very small percentage of approved drugs (see, e.g., Blake, MI et al, J Pharm Sci, 1975, 64:367-91; Foster, AB, Adv Drug Res 1985, 14: 1-40 (“Foster”); Kushner, DJ et al, Can J Physiol Pharmacol 1999, 79-88; Fisher, MB et al, Curr Opin Drug Discov Devel, 2006, 9: 101-09 (“Fisher”)). The results have been variable and unpredictable. For some compounds deuteration caused decreased metabolic clearance in vivo. For others, there was no change in metabolism. Still others demonstrated increased metabolic clearance. The variability in deuterium effects has also led experts to question or dismiss deuterium modification as a viable drug design strategy for inhibiting adverse metabolism (see Foster at p. 35 and Fisher at p. 101).

[8] The effects of deuterium modification on a drug’s metabolic properties are not predictable even when deuterium atoms are incorporated at known sites of metabolism. Only by actually preparing and testing a deuterated drug can one determine if and how the rate of metabolism will differ from that of its non-deuterated counterpart. See, for example, Fukuto et al. (J. Med. Chem. 1991, 34, 2871-76). Many drugs have multiple sites where metabolism is possible. The site(s) where deuterium substitution is required and the extent of deuteration necessary to see an effect on metabolism, if any, will be different for each drug.

Patent ID

Patent Title

Submitted Date

Granted Date

US2016367560 Methods for Treating Parkinson’s Disease 2016-06-17
US9534052 Reducing systemic regulatory T cell levels or activity for treatment of Alzheimer’s disease 2016-07-16 2017-01-03
US9512225 Reducing systemic regulatory T cell levels or activity for treatment of Alzheimer’s disease 2016-06-22 2016-12-06
US9512227 Reducing systemic regulatory T cell levels or activity for treatment of Alzheimer’s disease 2016-07-05 2016-12-06
Patent ID

Patent Title

Submitted Date

Granted Date

US2016000909 REDUCING SYSTEMIC REGULATORY T CELL LEVELS OR ACTIVITY FOR TREATMENT OF DISEASE AND INJURY OF THE CNS 2015-07-13 2016-01-07
US2016008463 REDUCING SYSTEMIC REGULATORY T CELL LEVELS OR ACTIVITY FOR TREATMENT OF DISEASE AND INJURY OF THE CNS 2015-09-10 2016-01-14
US2016108123 ANTIBODY MOLECULES TO PD-L1 AND USES THEREOF 2015-10-13 2016-04-21
US9394365 Reducing systemic regulatory T cell levels or activity for treatment of alzheimer’s disease 2015-12-02 2016-07-19
US2017029508 Reducing Systemic Regulatory T Cell Levels or Activity for Treatment of Disease and Injury of the CNS 2016-09-10
Patent ID

Patent Title

Submitted Date

Granted Date

US7368446 4-Hydroxy-4-methyl-piperidine-1-carboxylic acid (4-methoxy-7-morpholin-4-yl-benzothiazol-2-yl)-amide 2005-11-24 2008-05-06
US8168785 BENZOTHIAZOLE DERIVATIVES 2010-12-23 2012-05-01
US2009082341 4-hydroxy-4-methyl-piperidine-1-carboxylic acid (4-methoxy-7-morpholin-4-yl-benzothiazol-2-yl)-amide FOR THE TREATMENT OF POST-TRAUMATIC STRESS DISORDER 2008-07-23 2009-03-26
US2013317019 A2A Antagonists as Cognition and Motor Function Enhancers 2011-11-04 2013-11-28
US9387212 Methods for Treating Parkinson’s Disease 2013-04-19 2015-06-11

///////////////TOZADENANT, phase III,  clinical trials,  Parkinson’s disease ,  adjunctive therapy,  levodopa, RO-449351, SYN-115

CC1(CCN(CC1)C(=O)NC2=NC3=C(C=CC(=C3S2)N4CCOCC4)OC)O

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