New Drug Approvals

Home » PHASE1

Category Archives: PHASE1

Advertisements
DRUG APPROVALS BY DR ANTHONY MELVIN CRASTO .....FOR BLOG HOME CLICK HERE

Blog Stats

  • 2,529,814 hits

Flag and hits

Flag Counter

Enter your email address to follow this blog and receive notifications of new posts by email.

Join 2,366 other followers

Follow New Drug Approvals on WordPress.com

Categories

Flag Counter

ORGANIC SPECTROSCOPY

Read all about Organic Spectroscopy on ORGANIC SPECTROSCOPY INTERNATIONAL 

Enter your email address to follow this blog and receive notifications of new posts by email.

Join 2,366 other followers

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

Personal Links

Verified Services

View Full Profile →

Categories

Flag Counter
Advertisements

SHR-0532


SHR-0532

CAS 2166329-09-3

C24 H26 N4 O5 . C4 H6 O6

2-Pyridinecarboxamide, 5-cyano-N-[1-[(2R)-2-(1,3-dihydro-4-methyl-1-oxo-5-isobenzofuranyl)-2-hydroxyethyl]-4-piperidinyl]-4-methoxy-, (2R,3R)-2,3-dihydroxybutanedioate (1:1)

str1

FREE FORM

1945997-37-4

C24 H26 N4 O5
450.49
2-Pyridinecarboxamide, 5-cyano-N-[1-[(2R)-2-(1,3-dihydro-4-methyl-1-oxo-5-isobenzofuranyl)-2-hydroxyethyl]-4-piperidinyl]-4-methoxy-

5-Cyano-N-[1-[(2R)-2-(1,3-dihydro-4-methyl-1-oxo-5-isobenzofuranyl)-2-hydroxyethyl]-4-piperidinyl]-4-methoxy-2-pyridinecarboxamide

KCNJ potassium channel-1 inhibitor, Hypertension; Renal insufficiency

  • Originator Jiangsu Hengrui Medicine Co.
  • Class Antihypertensives
  • Mechanism of Action Undefined mechanism
  • Preclinical Hypertension
  • 03 Jun 2019 Jiangsu Hengrui Medicine Co. plans a phase I trial for Hypertension (PO) in June 2019 (NCT03971929)
  • 26 Aug 2018 Jiangsu HengRui Medicine plans a phase I trial for Hypertension (In volunteers) (PO) in August 2018 (NCT03645278)

Jiangsu Hengrui Medicine is developing an oral tablet formulation of SHR-0532, a small molecule specific inhibitor of ROMK (renal outer medullary potassium channel), for use as a diuretic to treat hypertension and renal insufficiency inducing water and sodium retention. In January 2019 a phase trial was completed, and in June 2019, another phase I trial for mild hypertension was planned.

PATENT

WO2016091042

WO 2017211271

CN 108113988

PATENT

WO2019011200

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2019011200&redirectedID=true

Diuretics are widely recommended as first-line antihypertensive drugs in national hypertension guidelines for mild to moderate hypertension, especially in elderly hypertension or complicated heart failure.

Clinically, traditional diuretics have a risk of causing hypokalemia. ROMK antihypertensive diuretic development of new targets, as ROMK of inward rectifier K + channel (inwardly rectifying K channels, Kir) a family, belong Kir1 type, the maintenance of renal potassium ions play a crucial balance effect. In the rat kidney, there are at least three subtypes of ROMK channels: ROMK1, ROMK2, and ROMK3. Most of ROMK2 is distributed in the ascending limb of Henle (TALH); ROMK1 and ROMK3 are mainly expressed on the cortical collecting duct (CCD). Expressed in the TALH and ROMK of Na + / K + / 2Cl  transporter with regulating the secretion of potassium ions and sodium reabsorption, and expressed in the CCD ROMK of Na + / K + secretion was adjusted with potassium transporter. Therefore, blocking the ROMK site can be a good diuretic research direction by inhibiting the reabsorption of Na + by diuretic and reducing blood potassium and causing hypokalemia.

WO2016091042A1 (publication date 2016-06-16) discloses a class of extrarenal medulla secretory potassium channel (ROMK) inhibitors, chemical name (R)-5-cyano-N-(1-(2-hydroxy-2) a compound of (4-methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl)ethyl)piperidin-4-yl)-4-methoxypyridinecarboxamide, relative In other ROMK inhibitors, the compound increases the polar group, lowers the ClogP, enhances the hERG selectivity and increases the safety based on the activity of the ROMK inhibitor, and its structure is as shown in the formula (A).
Example 1 of WO2016091042A1 discloses a preparation method of Compound A, which has a total of five steps of reaction, and the specific reaction is as follows:
The method has the problems of more reaction steps, small batch size, post-treatment method using thin layer chromatography purification, low yield, etc., wherein the yield of the second step reaction is 22.4%, and the yield of the product prepared in the last step is only 11.3. % is not conducive to industrial expansion of production, it is necessary to improve its preparation method.
Example 1. Preparation of (R)-4-methyl-5-(oxiran-2-yl)isobenzofuran-1(3H)-one
First step, preparation of compound of formula (h)
Sodium borohydride (57.8 g) was dissolved in tetrahydrofuran (2000 mL), argon-protected, cooled to 0 ° C, material i (130.0 g) was added portionwise, and stirred at 5-10 ° C for 1 hour, 5-10 ° C Add boron trifluoride diethyl ether (237 mL) dropwise, stir at room temperature for 4 hours, stop the reaction, add methanol (800 mL) to quench the reaction, stir, add 1N hydrochloric acid (1000 mL) solution, stir at 0-20 ° C for 1 hour, decompress The organic solvent was evaporated, and the residue was evaporated. mjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj Concentration gave the title product (95 g).
The second step, the preparation of the compound of formula (g)
The raw material h (120.0 g) and trifluoroacetic acid (64 mL) were dissolved in acetonitrile (1 L), stirred, and cooled to 0-5 ° C under ice bath, and solid N-bromosuccinimide (147.0 g) was added portionwise. The reaction temperature was controlled at 0-8 ° C. After the reaction was completed, the reaction was quenched by adding 200 mL of potassium carbonate aqueous solution (containing 66.0 g of potassium carbonate) under ice-cooling, and concentrated under reduced pressure, water (200 mL) and ethyl acetate (800 mL) ×1,400 mL×2), and the organic phase was combined with EtOAc EtOAc (EtOAc m. Drying gave 150.0 g of product.
The third step, the preparation of the compound of formula (f)
The cuprous cyanide (123.0 g) was added to N,N-dimethylformamide (500 mL), and the material g (150.0 g) was dissolved in N,N-dimethylformamide (250 mL), and added to the dropping funnel. Under an argon atmosphere, after heating to 140-150 ° C, the N,N-dimethylformamide solution of the raw material g was added dropwise, and the reaction was stirred at 145 ° C for 2 hours. After the reaction was completed, the temperature was lowered to 90-95 ° C, and the mixture was added dropwise. Ionized water (62 mL), reacted for 18 hours, stopped the reaction, and cooled to room temperature. The reaction solution was added to a mixed solvent of isopropyl acetate/methanol (V/V = 4:1, 1500 mL), stirred for 30 minutes, and padded with silica gel and silicon. The mixture was filtered with celite, and the filter cake was washed with isopropyl acetate/methanol (V/V = 4:1, 100 mL×3), and the filtrate was concentrated under reduced pressure. The residue was slowly added to deionized water (3 L) and stirred for 1 hour. Filtration, the filter cake was washed with ethanol (50 mL×3), and the filter cake was dried to give 133.0 g of crude product. The crude product was added to ethyl acetate/methanol (V/V=4:1, 2.0L) and heated to reflux. After filtration, the cake was washed with ethyl acetate /methanol (EtOAc/EtOAc (EtOAc)
The fourth step, the preparation of the compound of formula (e)
The starting material f (26.0 g) was dissolved in dichloromethane (520 mL), triethylamine (33 mL) was added, and the mixture was cooled to -5-0 ° C and added trifluoromethanesulfonic anhydride (29.2 mL), 0-10 After reacting at ° C for 2 hours, the reaction was stopped. Under ice-cooling conditions, water (250 mL) was added dropwise to the reaction mixture to quench the reaction, and the mixture was separated, and the aqueous phase was extracted with dichloromethane (100 mL×2). The sodium solution (300 mL) was washed with EtOAc EtOAc (mjjHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH After dissolving at 70 ° C, the supernatant liquid was separated, and the lower layer of the oil was dissolved in a mixed solution of petroleum ether and ethyl acetate (V/V = 5:1) (300 mL × 2), and the organic phases were combined and concentrated under reduced pressure. (41.0 g), EtOAc (EtOAc m.
The fifth step, the preparation of the compound of formula (d)
The starting material e (50.1 g) was dissolved in isopropanol (500 mL), and ethylene trifluoroborate (29.5 g) and 1,1′-bisdiphenylphosphinoferrocene palladium dichloride (1.25 g) were added. Further, triethylamine (71 mL) was added, and the reaction was refluxed for 1.5 hours under an argon atmosphere. The reaction was stopped, cooled to room temperature, filtered, and the filtrate was washed with ethyl acetate (20 mL×3), and the filtrate was concentrated and concentrated through silica gel column. The title product (29.0 g) was obtained (yield: ethyl acetate: petroleum ether = 1:5-1:3).
The sixth step, the preparation of the compound of formula (c)
Potassium ferricyanide (279.0 g) was added to the reaction flask, followed by potassium carbonate (116.0 g) and hydrogenated quinidine 1,4-(2,3-naphthyridinyl)diether ((DHQD) 2 PHAL , 1.1g) and potassium citrate dihydrate (103mg), add 2L of deionized water, stir for 30 minutes, add tert-butanol (1.5L) under argon atmosphere, stir for 15 minutes, 0-5 ° C raw material d ( 49.0g) was added in portions, stirred at 0-5 ° C for 4 hours, warmed to room temperature and stirred for 18 hours, the reaction was stopped, saturated sodium sulfite solution (800 mL) and ethyl acetate (1000 mL) were added, stirred until fully dissolved, layered, The aqueous layer was extracted with EtOAc (EtOAc (EtOAc) (EtOAc (EtOAc) The mixture was cooled to rt.
The seventh step, the preparation of the compound of formula (a)
The raw material c (54.0 g) was added to dichloromethane (600 mL), and the mixture was white turbid. Under argon atmosphere, b (46.9 g) was added, stirred at room temperature for 10 minutes, cooled to 0 ° C, and trimethylchlorosilane was added dropwise. (54.0g), stirring at 0 ° C for 30 minutes, the solution became clear, warmed to room temperature for 1 hour, then cooled to 0 ° C, added b (23.0g), raised to room temperature for 30 minutes, stop the reaction, the reaction solution Concentration under reduced pressure gave the crude title product which was used in the next step without purification.
The eighth step, the preparation of the compound of formula (VI)
The raw material a (69.6 g) was added to methanol (1000 mL), and potassium carbonate (90.0 g) was added, and the mixture was stirred at room temperature for 2 hours, the reaction was stopped, and the mixture was evaporated under reduced pressure. ethyl acetate (500 mL) and water (200 mL) The aqueous phase was extracted with EtOAc (EtOAc (EtOAc) (EtOAc) The title compound (35.0 g) was obtained in vacuo.
Example 2 Preparation of 5-cyano-4-methoxypyridinecarboxylic acid hydrochloride
First step, preparation of the compound of formula (p)
Raw material n (110.0g), o (150.0g), acetic anhydride (151.5g) was added to the reaction flask and refluxed for 4 hours, the reaction was stopped, concentrated under reduced pressure, and the obtained residue was controlled at a temperature of 0-10 ° C to add ammonia water and Water (V / V = 1:1, 600mL) mixed solution, when a large amount of solids were formed, add ice water (400mL), drip, stir for 30 minutes, adjust to pH 2-3 with concentrated hydrochloric acid, stir 30 After a minute, the mixture was filtered, and the filter cake was dried, and then filtered with anhydrous ethanol (500 mL) for 1 hour, filtered, filtered, washed with cold anhydrous ethanol (100 mL×3), and the filter cake was dried to give the title product (80.0 g) The yield was 59%.
The second step, the preparation of the compound of formula (q)
Sodium hydroxide (43.6 g) was added to water (800 mL) under ice bath, and the starting material p (79.8 g) was added portionwise to the above aqueous sodium hydroxide solution, the ice bath was removed, and the mixture was heated to reflux for 2 hours to terminate the reaction. The reaction solution was cooled to room temperature with ice water, 2M hydrochloric acid solution was added dropwise to adjust the pH to 2-3, stirred for 30 minutes, filtered, and the filter cake was washed with ice water (100 mL) and cold ethanol (100 mL), and the obtained solid was dried. The title product (71.2 g), yield 100%.
The third step, the preparation of the compound of formula (r)
The raw material q (70.3 g) was dissolved in phosphorus oxychloride (210 mL), stirred at 110 ° C for 2 hours under reflux, concentrated under reduced pressure to remove phosphorus oxychloride, and the residue was added to acetonitrile (350 mL). Add diisopropylethylamine (117.0 g), dilute the solution to a black suspension, add the suspension to the ammonia water (350 mL) under ice bath, drop the reaction for 30 minutes, ethyl acetate (500 mL × 3) Extraction, the organic phase was combined, washed with saturated sodium chloride (500 mL), dried over anhydrous sodium sulfate, filtered and evaporated. (44.7 g), yield 51%.
The fourth step, the preparation of the compound of formula (s)
The raw material r (44.3 g) was added to dichloromethane (440 mL) under an argon atmosphere, and the temperature was controlled to 0-5 ° C under ice-cooling, triethylamine (58.6 g) was added dropwise, and the mixture was stirred for 10 minutes. Trifluoroacetic anhydride (58.5g) was added dropwise, the addition was completed, and the reaction was carried out for 1 hour in an ice bath. The reaction was stopped, the pH of the reaction mixture was 7-8, and the reaction was quenched by adding water (400 mL), and the mixture was separated. The organic phase was extracted with EtOAc (EtOAc) (EtOAc) (HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH g), yield 91%.
The fifth step, the preparation of the compound of formula (t)
The raw material s (25.6 g) and cesium carbonate (49.2 g) were dissolved in N,N-dimethylformamide (260 mL), cooled to 0 ° C in an ice bath, and methanol (9.5 g) was added dropwise in an ice bath, 0 ° C After reacting for 6 hours, the mixture was stirred at 20-25 ° C for 12 hours, and the reaction was stopped. The reaction mixture was quenched with water (650 mL), and extracted with ethyl acetate (200 mL×3). The title compound (16.8 g) was obtained. The title compound (16.8 g) was obtained from EtOAc (EtOAc). The rate is 67%.
The sixth step, the preparation of the compound of formula (II-1)
Add t (22.0g), palladium acetate (1.46g), 1,3-bis(diphenylphosphino)propane (2.68g), triethylamine (36mL) to the mixed solution, pressurize with carbon monoxide to 10bar, heat up The reaction was stopped at 70 ° C for 18 hours, the reaction was stopped, the organic solvent was removed by concentration, the aqueous phase was added with saturated sodium chloride solution and dichloromethane (300 mL×3), and the organic phase was combined, decolorized by activated carbon, filtered, and the organic phase was adjusted to pH with concentrated hydrochloric acid. =1, a solid precipitated, and after adding 50 mL of isopropanol, the dichloromethane was concentrated to remove the product, which was filtered and dried to give a product (23.6 g).
Example 3, (R)-5-cyano-N-(1-(2-hydroxy-2-(4-methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl) Preparation of ethyl)piperidin-4-yl)-4-methoxypyridinecarboxamide (formula (I))
First step, synthesis of intermediate (IV)
Into the reaction flask, 4.0 L of absolute ethanol was added, and (R)-4-methyl-5-(oxiran-2-yl)-benzoisofuran-1(3H)-one (274.8) was added under stirring. g), 4-Boc-aminopiperidine (341.2 g), heated to 65-70 ° C, stirred for 18-20 h, and the heating was stopped. Naturally cooled to 50-55 ° C, 8.0 L of n-hexane was added under stirring, stirred until the temperature naturally dropped to 20-25 ° C, a large amount of solids were precipitated, the temperature of the ice bath was lowered to 0-5 ° C, stirred, suction filtered, filter cake It was washed twice with n-hexane (250 ml × 2) and dried to give a solid (354.3 g).

The second step, the synthesis of intermediate (III-1)

5.2 L of ethyl acetate was placed in a glass bottle, and the temperature was lowered to 0 to 5 ° C under stirring. The stirring was stopped, hydrogen chloride gas (0.48 kg) was introduced, and the temperature of the reaction liquid was controlled to be lower than 5 ° C during the passage of hydrogen chloride. The above product (349.3 g) was added to the reaction mixture with slow stirring. After the addition, the reaction was stirred for 3-4 hours, and the reaction temperature was naturally raised to 20-25 ° C, and the stirring was stopped. After suction filtration, the filter cake was washed three times with ethyl acetate (1.0 L×3), and the filter cake was dried under vacuum at 40-45 ° C for 6-8 h to give a solid (322.8 g) in a yield of 99.3%; The ratio of hydrochloric acid was determined by silver nitrate titration to be 20.5%.

The third step, the synthesis of the compound of formula (I)

Into the reaction flask, 4.0 L of N, dimethylformamide was added, and the product of the above step (317.8 g), 5-cyano-4-methoxypyridinecarboxylate II-1 (205.9 g) was sequentially added with stirring. Triethylamine (528.2 g), 1-hydroxybenzotriazole (152.7 g), N,N-diisopropylcarbodiimide (142.6 g). After the addition, the argon gas was replaced three times, and the mixture was heated to 40-45 ° C to stir the reaction for 16-18 h. The heating was stopped, and the reaction liquid was poured into ice water (30 L), and stirred for 1 hour. After suction filtration, the filter cake was washed three times with purified water, dried, and then pulverized with anhydrous ethanol (3.0 L) at 20-25 ° C for 1 h. Filtering, drying 10-12h to obtain crude (290.4g), yield 73.7%, purity: 97.76%;
N,N-dimethylformamide (2.0 L) was added to the crude product (290.4 g) with stirring. The reaction solution was heated to 70-75 ° C, 20.3 g of activated carbon (7% w/w) was added, and the mixture was stirred for 1 h. Heat filtration, wash the filter residue with hot N,N-dimethylformamide (70-75 ° C, 200 mL), combine the filtrate, heat the filtrate to 70-75 ° C, add hot (65-70 ° C, 5 L) with stirring Anhydrous ethanol to the reaction liquid in the previous step, stirring and crystallization, until the temperature naturally drops to 20-25 ° C, the reaction bottle is transferred to an ice water bath and stirring for 1 h, suction filtration, the filter cake is washed with absolute ethanol, dried to obtain a solid 219.5 g, total yield 55.7%, purity: 99.69%.
1 H-NMR (400 MHz, DMSO-d 6 ) δ 8.88 (s, 1H), 8.75 (d, 1H), 7.77 (s, 1H), 7.71-7.69 (m, 2H), 5.43-5.40 (m, 2H), 5.35 (s, 1H), 5.08 (s, 1H), 4.09 (s, 3H), 3.78 (s, 1H), 2.95 (s, 3H), 2.38 (s, 1H), 2.27 (s, 3H) ), 2.25 (s, 2H), 1.72 (s, 4H).

PATENT

WO-2019109935

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2019109935&tab=FULLTEXT&maxRec=1000

Novel crystalline forms of a renal outer medullary potassium channel inhibitor and their salts, preferably Form III, for treating hypertension or heart failure.

Strengthening the salt reabsorption of the kidneys can trigger a risk of high blood pressure. On the contrary, inhibiting the reabsorption function of the kidney can promote the excretion of urine and play a diuretic and antihypertensive effect. Common diuretics are thiazide diuretics, as the first-line antihypertensive drugs in the United States, mainly acting on Na + -Cl transport carriers; Loop diuretics are more effective in patients with impaired renal function, mainly through Na + -K + -2Cl  Transport proteins play a role. But both diuretics cause hypokalemia (symptoms: weakness, fatigue, muscle cramps, constipation and heart rhythm problems such as arrhythmia), increasing the risk of cardiovascular disease morbidity and mortality.
The renal outer medullary potassium channel (ROMK) is also called inward-rectifying potassium channel 1.1 (Kir1.1). Ion channels may ROMK thick ascending limb segment (the TAL) conductance through apical membrane of renal medullary loop, and of Na + -K + -2Cl  cotransporter NKCC2 (responsible for transport of NaCl) synergy regulation of Na + reabsorption. The study found that ROMK is directly associated with the secretory pathway of the kidney, knocking out the ROMK gene, missing the 35-pS ion channel and other TAL K + ion channels of mouse TAL and CCD . Batter syndrome is an autosomal recessive hereditary disease characterized by massive loss of salt in the kidneys, hypokalemia, and low blood pressure. Paramyelocytic hyperplasia is mainly caused by mutation of ROMK or Na + -K + -2Cl  cotransporter, except that hypokalemia caused by rotaside cell hyperplasia caused by ROMK mutation is better than Na + -K + – Parathyroid cell hyperplasia induced by 2Cl  cotransporter mutations is greatly alleviated. In summary, suppressing the function of ROMK can effectively inhibit Na without causing hypokalemia. + -K + -2Cl  The salt reabsorption function of transporters promotes the excretion of urine and acts as a diuretic and antihypertensive agent .
WO2016091042A1 (Publication Date 2016.06.16) discloses an extrarenal medullary secretory potassium channel (ROMK) inhibitor having the chemical name (R)-5-cyano-N-(1-(2-hydroxy-2-() 4-methyl-1-carbonyl-1,3-dihydroisobenzofuran-5-yl)ethyl)piperidin-4-yl)-4-methoxypyridinecarboxamide relative to other ROMK inhibitors The compound increases the polar group, reduces the ClogP on the basis of maintaining the activity of the ROMK inhibitor, improves the selectivity of hERG, and increases the safety, and the structure is as shown in formula (II):
The crystal structure of the pharmaceutically active ingredient often affects the chemical and physical stability of the drug, and the difference in crystallization conditions and storage conditions may cause changes in the crystal structure of the compound, sometimes accompanied by the formation of other forms of crystal form. In general, amorphous pharmaceutical products have no regular crystal structure and often have other defects, such as poor product stability, difficulty in filtration, easy agglomeration, and poor fluidity. Therefore, it is necessary to improve various aspects of the compound of the formula (II).

/////////////SHR-0532, SHR0532, SHR 0532, Jiangsu Hengrui Medicine Co, phase I, Antihypertensives

COc1cc(ncc1C#N)C(=O)NC2CCN(CC2)C[C@H](O)c4ccc3C(=O)OCc3c4C

Advertisements

TAK-981


LXRZVMYMQHNYJB-UNXOBOICSA-N.png

TAK-981

C25 H28 Cl N5 O5 S2, 578.103

[(1R,2S,4R)-4-[(5-[4-[(1R)-7-Chloro-1,2,3,4-tetrahydroisoquinolin-1-yl]-5-methylthiophene-2-carbonyl]pyrimidin-4-yl)amino]-2-hydroxycyclopentyl]methyl sulfamate

[(1R,2S,4R)-4-[[5-[4-[(1R)-7-Chloro-1,2,3,4-tetrahydroisoquinolin-1-yl]-5-methyl-thiophene-2-carbonyl]pyrimidin-4-yl]amino]-2-hydroxy-cyclopentyl]methyl sulfamate

Sulfamic acid, [(1R,2S,4R)-4-[[5-[[4-[(1R)-7-chloro-1,2,3,4-tetrahydro-1-isoquinolinyl]-5-methyl-2-thienyl]carbonyl]-4-pyrimidinyl]amino]-2-hydroxycyclopentyl]methyl ester

CAS 1858276-04-6 FREE

CAS 1858279-63-6 HYDRATE

 MW 578.103
  • Originator Takeda Oncology
  • Class Antineoplastics
  • Mechanism of Action Small ubiquitin-related modifier protein inhibitors
  • Phase I Lymphoma; Solid tumours
  • 01 Oct 2018 Phase-I clinical trials in Solid tumours (Late-stage disease, Metastatic disease) and and Lymphoma (Refractory metastatic disease, Second-line therapy or greater) in USA (IV) (NCT03648372)
  • 03 Sep 2018 Takeda Oncology plans a phase I trial for Solid tumours (Late-stage disease, Metastatic disease) and Lymphoma (Refractory metastatic disease, Second-line therapy or greater) in September 2018 (IV) (NCT03648372)
  • 03 Sep 2018 Preclinical trials in Lymphoma in USA (IV) prior to September 2018 (NCT03648372)

Takeda is evaluating TAK-981, a SUMO-Activating Enzyme (SAE) inhibitor, in early clinical trials for the treatment of adult patients with advanced or metastatic solid tumors or with relapsed or refractory lymphomas.

str1

Small ubiquitin-like modifier (SUMO) is a member of the ubiquitin-like protein (Ubl) family that is covalently conjugated to cellular proteins in a manner similar to Ub-conjugation (Kerscher, O., Felberbaum, R., and Hochstrasser, M. 2006. Modification of proteins by ubiquitin and ubiquitin-like proteins. Annu Rev Cell Dev Biol. 22: 159-80). Mammalian cells express three major isoforms: SUMO l , SUM02 and SUM03. SUM02 and SUM03 share -95% amino acid sequence homology but have -45% sequence homology with SUMO l (Kamitani, T., Kito, K., Nguyen, H. P., Fukuda-Kamitani, T., and Yeh, E. T. 1998. Characterization of a second member of the sentrin family of ubiquitin-like proteins. J Biol Chem. 273( 18): 1 1349-53). SUMO proteins can be conjugated to a single lysine residue of a protein (monosumoylation) or to a second SUMO protein that is already conjugated to a protein forming a SUMO chain (polysumoylation). Only SUM02/3 can form such chains because they possess internal consensus SUMO modification sites (Tatham, M. H., Jaffray, E., Vaughan, O. A., Desterro, J. M., Botting, C. H., Naismith, J. H., Hay, R. T. 2001. Polymeric chains of SUMO-2 and SUM 0-3 are conjugated to protein substrates by SAE1/SAE2 and Ubc9. J Biol Chem. 276(38):35368-74). An additional isoform, SUM04, is found in kidney, lymph node and spleen cells, but it is not known whether SUM04 can be conjugated to cellular proteins.

[0003] SUMO l , SUM02 and SUM03 are activated in an ATP-dependent manner by the SUMO-activating enzyme (SAE). SAE is a heterodimer that consists of SAE 1 (SUMO-activating enzyme subunit 1) and SAE2 (UBA2). SAE, like other El activating enzymes, uses ATP to adenylate the C-terminal glycine residue of SUMO. In a second step, a thioester intermediate is then formed between the C-terminal glycine of SUMO and a cysteine residue in SAE2. Next, SUMO is transferred from the El to the cysteine residue of the SUMO conjugating enzyme (E2), UBC9. Unlike the Ub pathway that contains many E2 enzymes, Ubc9 is currently the only known conjugating enzyme for SUMO and functions with SUMOl , SUM02 and SUM03 proteins. SUMO proteins are then conjugated to the target protein, either directly or in conjunction with an E3 ligase, through isopeptide bond formation with the epsilon amino group of a lysine side chain on a target protein. Several SUMO E3 ligases, including PIAS (protein inhibitor of activated signal transducer and activator of transcription protein) proteins and Ran-binding protein 2 (RanBP2), and polycomb 2 (Pc2), have been identified (Johnson, E. S., and Gupta, A. A. 2001. An E3-like factor that promotes SUMO conjugation to the yeast septins. Cell. 106(6):735-44; Pichler, A., Gast, A., Seeler, J. S., Dejean, A.; Melchior, F. 2002. The nucleoporin RanBP2 has SUMOl E3 ligase activity. Cell. 108(1): 109-20; Kagey, M. H., Melhuish, T. A., and Wotton, D. 2003. The polycomb protein Pc2 is a SUMO E3. Cell. 1 13(1): 127- 37). Once attached to cellular targets, SUMO modulates the function, subcellular localization, complex formation and/or stability of substrate proteins (Miiller, S., Hoege, C, Pyrowolakis, G., and Jentsch, S. 2001. SUMO, ubiquitin’s mysterious cousin. Nat Rev Mol Cell Biol. 2(3):202-10). SUMO- conjugation is reversible through the action of de-sumoylating enzymes called SENPs (Hay, R. T. 2007. SUMO-specific proteases: a twist in the tail. Trends Cell Biol. 17(8):370-6) and the SUMO proteins can then participate in additional conjugation cycles.

[0004] SAE-initiated SUMO-conjugation plays a major role in regulating diverse cellular processes, including cell cycle regulation, transcriptional regulation, cellular protein targeting, maintenance of genome integrity, chromosome segregation, and protein stability (Hay, R. T. 2005. SUMO: a history of modification. Mol Cell. 18( 1): 1 -12; Gill, G. 2004. SUMO and ubiquitin in the nucleus: different functions, similar mechanisms? Genes Dev. 18(17):2046-59). For example, SUMO- conjugation causes changes in the subcellular localization of RanGAPl by targeting it to the nuclear pore complex (Mahajan, R., Delphin, C., Guan, T., Gerace, L., and Melchior, F. 1997. A small ubiquitin-related polypeptide involved in targeting RanGAPl to nuclear pore complex protein RanBP2. Cell. 88(1):97- 1070). Sumoylation counteracts ubiquitination and subsequently blocks the degradation of Ι Β, thereby negatively regulating NF-κΒ activation (Desterro, J. M., Rodriguez, M. S., Hay, R. T. 1998. SUMO- 1 modification of IkappaB alpha inhibits NF-kappaB activation. Mol Cell. 2(2):233-9). Sumoylation has been reported to play an important role in transcription exhibiting both repressive and stimulatory effects. Many of the transcriptional nodes that are modulated play important roles in cancer. For example, sumoylation stimulates the transcriptional activities of transcription factors such as p53 and HSF2 (Rodriguez, M. S., Desterro, J. M., Lain, S., Midgley, C. A., Lane, D. P., and Hay, R. T. 1999. SUMO- 1 modification activates the transcriptional response of p53. EMBO J. 18(22):6455-61 ; Goodson, M. L., Hong, Y., Rogers, R., Matunis, M. J., Park-Sarge, O. K., Sarge, K. D. 2001. Sumo- 1 modification regulates the DNA binding activity of heat shock transcription factor 2, a promyelocytic leukemia nuclear body associated transcription factor. J Biol Chem. 276(21 ): 18513-8). In contrast, SUMO-conjugation represses the transcriptional activities of transcription factors such as LEF (Sachdev, S., Bruhn, L., Sieber, H., Pichler, A., Melchior, F., Grosschedl, R. 2001. PIASy, a nuclear matrix-associated SUMO E3 ligase, represses LEF1 activity by sequestration into nuclear bodies. Genes Dev. 15(23):3088- 103) and c-Myb (Bies, J., Markus, J., and Wolff, L. 2002. Covalent attachment of the SUMO- 1 protein to the negative regulatory domain of the c-Myb transcription factor modifies its stability and transactivation capacity. / Biol Chem. 277( 1 1):8999-9009). Thus, SUMO-conjugation controls gene expression and growth control pathways that are important for cancer cell survival.

[0005] Altered expression of SAE pathway components have been noted in a variety of cancer types: (Moschos, S. J., Jukic, D. M., Athanassiou, C., Bhargava, R., Dacic, S., Wang, X., Kuan, S. F., Fayewicz, S. L., Galambos, C., Acquafondata, M., Dhir, R., and Becker, D. 2010. Expression analysis of Ubc9, the single small ubiquitin-like modifier (SUMO) E2 conjugating enzyme, in normal and malignant tissues. Hum Pathol. 41(9): 1286-980); including multiple myeloma (Driscoll, J. J., Pelluru, D., Lefkimmiatis, K., Fulciniti, M., Prabhala, R. H., Greipp, P. R., Barlogie, B., Tai, Y. T., Anderson, K. C, Shaughnessy, J. D. Jr., Annunziata, C. M., and Munshi, N. C. 2010. The sumoylation pathway is dysregulated in multiple myeloma and is associated with adverse patient outcome. Blood. 1 15(14):2827-34); and breast cancer (Chen, S. F., Gong, C, Luo, M., Yao, H. R., Zeng, Y. J., and Su, F. X. 201 1. Ubc9 expression predicts chemoresistance in breast cancer. Chin J Cancer. 30(9):638-44), In addition, preclinical studies indicate that Myc-driven cancers may be especially sensitive to SAE inhibition (Kessler, J. D., Kahle, K. T., Sun, T., Meerbrey, K. L., Schlabach, M. R., Schmitt, E. M., Skinner, S. O., Xu, Q., Li, M. Z., Hartman, Z. C, Rao, M., Yu, P., Dominguez-Vidana, R., Liang, A. C, Solimini, N. L., Bernardi, R. J., Yu, B., Hsu, T., Golding, I., Luo, J., Osborne, C. K., Creighton, C. J., Hilsenbeck, S. G., Schiff, R., Shaw, C. A., Elledge, S. J., and Westbrook, T. F. 2012. A SUMOylation-dependent transcriptional subprogram is required for Myc-driven tumorigenesis. Science. 335(6066):348-53; Hoellein, A., Fallahi, M., Schoeffmann, S., Steidle, S., Schaub, F. X., Rudelius, M., Laitinen, I., Nilsson, L., Goga, A., Peschel, C, Nilsson, J. A., Cleveland, J. L., and Keller, U. 2014. Myc-induced SUMOylation is a therapeutic vulnerability for B-cell lymphoma. Blood. 124( 13):2081 -90). Since SUMO-conjugation regulates essential cellular functions that contribute to the growth and survival of tumor cells, targeting SAE could represent an approach to treat proliferative disorders such as cancer.

[0006] SAE inhibitors may also be applicable for the treatment of other diseases and conditions outside of oncology. For example, SUMO modifies proteins that play important roles in neurodegenerative diseases (Steffan, J. S., Agrawal, N., Pallos, J., Rockabrand, E., Trotman, L. C, Slepko, N., Hies, K., Lukacsovich, T., Zhu, Y. Z., Cattaneo, E., Pandolfi, P. P., Thompson, L. M., Marsh, J. L. 2004. SUMO modification of Huntington and Huntington’s disease pathology. Science. 304(5667): 100-4); Dorval, V., and Fraser, P. E. 2006. Small ubiquitin-like modifier (SUMO) modification of natively unfolded proteins tau and alpha-synuclein. J Biol Chem. 281 ( 15):9919-24; Ballatore, C, Lee, V. M., and Trojanowski, J. Q. 2007. Tau-mediated neurodegeneration in Alzheimer’s disease and related disorders. Nat Rev Neurosci. 8(9):663-72). Sumoylation also has been reported to play important role in pathogenic viral infection, inflammation and cardiac function (Lee, H. R., Kim, D. J., Lee, J. M., Choi, C. Y., Ahn, B. Y., Hayward, G. S., and Ahn, J. H. 2004. Ability of the human cytomegalovirus ΓΕ1 protein to modulate sumoylation of PML correlates with its functional activities in transcriptional regulation and infectivity in cultured fibroblast cells. / Virol. 78(12):6527-42; Liu, B., and Shuai, K. 2009. Summon SUMO to wrestle with inflammation. Mol Cell. 35(6):731-2; Wang, J., and Schwartz, R. J. 2010. Sumoylation and regulation of cardiac gene expression. Circ Rei. l07( l): 19-29). [0007] It would be beneficial therefore to provide new SAE inhibitors that possess good therapeutic properties, especially for the treatment of proliferative, inflammatory, cardiovascular and neurodegenerative disorders.

PATENT

WO 2016004136

https://patents.google.com/patent/WO2016004136A1/en

Example 133: [(lR,2S,4R)-4-[[5-[4-[(lR)-7-Chloro-l,2,3,4-tetrahydroisoquinolin-l-yl]-5-methyl- thiophene-2-carbonyl]pyrimidin-4-yl]amino]-2-hydroxy-cyclopentyl]methyl sulfamate I-263a

Figure imgf000367_0001

Step 1: 7-Chloro-l-[5-(l,3-dioxolan-2-yl)-2-methyl-3-thienyl]-l,2,3,4-tetrahydroisoquinoline

[00714] An oven-dried 2-neck 250 mL round bottom flask under nitrogen was charged with THF (40 mL) and cooled to -74 °C . Added 2.50 M ra-BuLi in hexane (6.92 mL, 17.3 mmol). Added a solution of Int-1 (4.00 g, 16.0 mmol) in THF (60 mL) slowly keeping the internal temperature less than -70 °C . Stirred with cooling 5 min. A second oven-dried 250 mL round bottom flask under nitrogen was charged with THF (60 mL) and Int-50 (2.04 g, 12.4 mmol) and the resulting solution was cooled to 0 °C . Added boron trifluoride diethyl ether complex ( 1.71 mL, 13.6 mmol) slowly and cooled to -30 °C . The contents of the first flask were transferred via cannula to the second flask. Reaction was quenched with saturated aqueous NaHC03 and warmed to rt. Water was added, and the mixture was extracted three times with EtOAc. Combined organic portions were washed with brine, dried over anhydrous Na2S04, filtered, and concentrated in vacuo. Residue was purified via flash column chromatography eluting with a hexane / EtOAc gradient (0 to 100% EtOAc) to afford the title compound as a white solid ( 1.88g, 45%). Ή NMR (400 MHz, Chloroform-d) δ 7.17 – 7.01 (m, 2H), 6.83 – 6.61 (m, 2H), 5.92 (s, 1H), 5.09 (s, 1H), 4.17 – 4.04 (m, 2H), 4.03 – 3.92 (m, 2H), 3.37 – 3.25 (m, 1H), 3.13 – 2.91 (m, 2H), 2.82 – 2.69 (m, 1H), 2.46 (s, 3H). LCMS: (AA) M+l 336.1

Step 2: ieri-Butyl 7-chIoro-l-[5-(l,3-dioxolan-2-yl)-2-methyl-3-thienyl]-3,4-dihydroisoquinoIine -2(lH)-carboxyIate [00715] A 50 mL round bottom flask under nitrogen was charged with 7-chloro-l -[5-(l ,3-dioxolan-2- yl)-2-methyl-3-thienyl]- l ,2,3,4-tetrahydroisoquinoline (5.67 g, 16.9 mmol) and DCM ( 100 mL), to which was added triethylamine (4.71 mL, 33.8 mmol), di-ieri-butyldicarbonate (4.61 g, 21.1 mmol), and N,N-dimethylaminopyridine (23 mg, 0.18 mmol). Reaction was stirred for 1 h at rt and then poured into saturated NaHC03 solution. Mixture was extracted three times with DCM, and the combined organic portions were washed with brine, dried over Na2S04, filtered, and concentrated in vacuo. The residue was subjected to flash column chromatography eluting with a hexane / EtOAc gradient to afford 6.96g (95%) of the title compound. LCMS: (AA) M+ l 436.1

Step 3: tert-Butyl 7-chloro-l-(5-formyl-2-methyl-3-thienyl)-3,4-dihydroisoquinoline -2(1H)- carboxylate

[00716] A 1 L round bottom flask was charged with ferf-butyl 7-chloro-

1 -[5-( 1 ,3-dioxolan-2-yl)-2-methyl-3-thienyl]-3 ,4-dihydroisoquinoline-2( 1 H)-carboxylate (7.30 g, 16.7 mmol), methanol (200 mL), and water (20 mL), to which was added a solution of 12M HC1 (4.00 mL, 130 mmol) in methanol (200 mL), and the reaction was stirred at rt for 1 h. Reaction was quenched via addition of 50mL of saturated NaHC03 and stirred for 5 min. Methanol was removed in vacuo, and the resulting aqueous mixture was extracted three times with EtOAc, and then the combined organic layers were washed with brine, dried over anhydrous Na2S04 and concentrated in vacuo. The residue was subjected to flash column chromatography eluting with a hexane / EtOAc gradient to afford the title compound (4.55g, 70%). Ή NMR (400 MHz, Chloroform-d) δ 9.67 (s, 1 H), 7.27 – 7.15 (m, 2H), 7.12 (s, 1 H), 6.98 – 6.94 (m, 1 H), 6.34 (m, l H), 4.15 (s, 1 H), 3.18 – 3.06 (m, 1 H), 3.05 – 2.93 (m, 1H), 2.82 – 2.73 (m, 1 H), 2.69 (s, 3H), 1.50 (s, 9H). LCMS: (AA) M+Na 414.2

Step 4: tert-Butyl 7-chIoro-l-{5-[(4-chloropyrimidin-5-yl)(hydroxy)methyI]-2-methyl-3-thienyl}- 3,4-dihydroisoquinoline-2(lH)-carboxylate

[00717] An oven-dried 500 mL 3-neck round bottom flask under nitrogen was charged with 4-chloro- 5-iodopyrimidine (4.08 g, 17.0 mmol) and 2-methyltetrahydrofuran ( 150 mL). An addition funnel containing a solution of rert-butyl 7-chloro- l -(5-formyl-2-methyl-3-thienyl)-3,4- dihydroisoquinoline-2(l H)-carboxylate (4.75 g, 12.1 mmol) in 2-methyltetrahydrofuran (50 mL) was attached, and the contents of the reaction flask were cooled to -75 °C . 2.50 M n-BuLi in hexane ( 14.1 mL, 35.2 mmol) was added in small portions keeping the internal temperature less than -70 °C , at which point the contents of addtion funnel were added in a single portion. Upon completion of addition, the reaction was quenched by adding 20 mL of saturated NaHC03 in small portions and warmed to rt. The aqueous mixture was extracted three times with EtOAc, and then the combined organic layers were washed with brine, dried over anhydrous Na2S04 and concentrated in vacuo. The residue was subjected to flash column chromatography eluting with a hexane / EtOAc gradient to afford the title compound (4.85g, 79%). LCMS: (AA) M+Na 528.1

Step 5: tert-Butyl 7-chloro-l-{5-[(4-chloropyrimidin-5-yl)(hydroxy)methyl]-2-methyl-3-thienyl}- 3,4- dihydroisoquinoline-2(lH)-carboxylate

[00718] A 1 L round bottom flask was charged with fe/Y-butyl 7-chloro- l – { 5-[(4-chloropyrimidin-5- yl)(hydroxy)methyl]-2-methyl-3-thienyl}-3,4-dihydroisoquinoline-2(l H)-carboxylate (4.85 g, 9.58 mmol) and DCM (300 mL). Manganese (IV) oxide (14.2 g, 163 mmol) was added and the reaction was stirred at rt for 18 h. Mixture was filtered through Celite, and the filter cake was rinsed with hot EtOAc. Filtrate was concentrated in vacuo to afford the title compound (4.47g , 93%). Ή NMR (400 MHz, Chloroform-d) δ 9.09 (s, 1 H), 8.70 (s, 1 H), 7.24 – 7.16 (m, 1 H), 7.16

– 7.07 (m, 1 H), 7.00 – 6.90 (m, 2H), 6.32 (s, 1 H), 4.28 – 3.97 (m, 1H), 3.14 – 2.89 (m, 2H), 2.78

– 2.65 (m, 4H), 1 .53 – 1.43 (m, 9H).

Step 6: tert-Butyl (lR)-7-chloro-l-[5-[4-[[(lR,3R,4S)-3-(hydroxymethyl)-4-triisopropylsiIyloxy- cyclopentyl]amino]pyrimidine-5-carbonyl]-2-methyl-3-thienyl]-3,4-dihydro-lH-isoquinoline-2- carboxylate

[00719] A 1 L round bottom flask under nitrogen was charged with iert-butyl 7-chloro- l – { 5-[(4- chloropyrimidin-5-yl)carbonyI]-2-methyl-3-thienyl }-3,4-dihydroisoquinoline-2( l H)-carboxylate (4.47 g, 8.86 mmol), DMF (20.0 mL, 258 mmol), Int-259 (3.06 g, 10.6 mmol), and triethylamine (3.09 mL, 22.2 mmol) and the mixture was stirred at rt for 18 h. Reaction mixture was poured into water and saturated NaHC03, and then extracted three times with EtOAc, and then the combined organic layers were washed with brine, dried over anhydrous Na2S04 and concentrated in vacuo. The residue was subjected to flash column chromatography eluting with a 70/30 to 60/40 hexane/EtOAc gradient to afford 0.56g of first-eluting diastereomer 1 (not pictured), 4.3 l g of a mixture of diastereomers, and 1.1 lg ( 17%) of second-eluting diastereomer 2 (the title compound). The mixture of diastereomers thus obtained was resubjected to the described chromatography conditions two additional times to afford a total of 2.62 g of the desired diastereomer. Ή NMR (400 MHz, Methanol-d4) δ 8.54 – 8.46 (m, 2H), 7.27 – 7.19 (m, 2H), 7.09 – 6.99 (m, 2H), 6.37 (s, 1H), 4.87 – 4.75 (m, 1H), 4.38 – 4.29 (m, 1H), 4.20 – 4.09 (m, 1H), 3.66 – 3.52 (m, 2H), 3.28- 3.14 (m, 2H), 3.02 – 2.89 (m, 1 H), 2.89 – 2.78 (m, 1 H), 2.68 (s, 3H), 2.54 – 2.41 (m, 1 H), 2.22 – 2.09 (m, 2H), 1.86 – 1.73 (m, 1H), 1.50 (s, 8H), 1.39 – 1.23 (m, 2H), 1.15 – 1.04 (m, 20H).

LCMS: (AA) M+ 1 755.3

Step 7: tert-Butyl (lR)-7-chloro-l-[2-methyl-5-[4-[[(lR,3R,4S)-3-(sulfamoyloxymethyl)-4- triisopropylsilyloxy-cyclopentyl]amino]pyrimidine-5-carbonyl]-3-thienyl]-3,4-dihydro-lH- isoquinoline-2-carboxylate [00720] A solution of ie/t-butyl (lR)-7-chloro-l-[5-[4-[[( lR,3R,4S)-3-(hydroxymethyl)-4- triisopropylsilyloxy-cyclopentyl]amino]pyrimidine-5-carbonyl]-2-methyl-3-thienyl]-3,4-dih lH-isoquinoline-2-carboxylate (2.46 g, 3.26 mmol) in 2-methyltetrahydrofuran (25 mL), and DMF (25 mL) was cooled to 0 °C. Triethylamine ( 1.82 mL, 13.0 mmol) and chlorosulfonamide (1.50 g, 13.0 mmol) were added and the reaction was stirred for 10 min. Added methanol (0.53 mL, 13.0 mmol) and stirred for 15 min. Reaction mixture was poured into saturated NaHC03, extracted three times with EtOAc, and then the combined organic layers were washed with brine, dried over anhydrous Na2S04 and concentrated in vacuo. The residue was subjected to flash column chromatography eluting with a hexane / EtOAc gradient to afford the title compound (2.41g, 89%). Ή NMR (400 MHz, Methanol-d4) δ 8.58 – 8.45 (m, 2H), 7.29 – 7.17 (m, 2H), 7.1 1 – 6.98 (m, 2H), 6.36 (s, 1 H), 4.84 – 4.73 (m, 1H), 4.44 – 4.33 (m, 1H), 4.21 – 4.08 (m, 4H), 3.27- 3.17 (m, 1 H),3.02 – 2.89 (m, 1 H), 2.88 – 2.78 (m, 1 H), 2.67 (s, 3H), 2.57 – 2.47 (m, 1 H), 2.41 – 2.30 (m, 1 H), 2.23 – 2.13 (m, 1 H), 1.87- 1.78 (m, 1 H), 1.50 (s, 9H), 1.43 – 1 .33 (m, 1 H), 1 .17 – 1.04 (m, 20H). LCMS: (AA) M+l 834.3

Step 8: [(lR,2S,4R)-4-[[5-[4-[(lR)-7-Chloro-l,2,3,4-tetrahydroisoquinolin-l-yl]-5-methyl- thiophene-2-carbonyl]pyrimidin-4-yI]aniino]-2-hydroxy-cyclopentyl]methyl sulfamate

[00721] A solution of f«?r/-butyl ( l R)-7-chloro- l -[2-methyl-5-[4-[[( l R,3R,4S)-3-

(sulfamoyloxymethyl)-4-triisopropylsilyloxy-cyclopentyl]amino]pyrimidine-5-carbonyl]-3- thienyl]-3,4-dihydro- l H-isoquinoline-2-carboxylate (2.41 g, 2.89 mmol) in CH3CN ( 10 mL) was cooled in an ice bath to + 1 °C . Phosphoric acid ( 10 mL, 200 mmol) was added dropwise and the reaction was stirred with ice bath cooling for 60 min. The mixture was warmed to rt and stirred for an additional 3 h. Reaction was poured into a stirring mixture of 50 mL water and 50 mL EtOAc, and the the pH was adjusted to ~9 by slowly adding 200 mL of saturated NaHC03 with stirring. Resulting aqueous mixture was extracted three times with EtOAc, and then the combined organic layers were washed with brine, dried over anhydrous Na2S04 and concentrated in vacuo. The residue was subjected to flash column chromatography eluting with a gradient that began with 100% DCM and increased in polarity to 80% DCM / 20% methanol / 2% ammonium hydroxide gradient to afford the title compound (1.50 g, 90%). Ή NMR (400 MHz, Methanol-d4) δ 8.61 (s, 1H), 8.52 (s, 1 H), 7.27 (s, 1 H), 7.18 – 7.13 (m, 2H), 6.73 – 6.68 (m, 1 H), 5.23 (s, 1H), 4.81 – 4.70 (m, 1 H), 4.26 – 4.10 (m, 3H), 3.29 – 3.23 (m, 2H), 3.1 1 – 2.96 (m, 2H), 2.87 – 2.76 (m, 1H), 2.60 (s, 3H), 2.55 – 2.42 (m, 1 H), 2.33 – 2.19 (m, 1H), 2.18 – 2.07 (m, 1H), 1.95 – 1.81 (m, 1H), 1.47 – 1.35 (m, 1 H). LCMS: (AA) M+l 580.0

CLIP

Candidate: TAK-981

https://cen.acs.org/pharmaceuticals/drug-discovery/Drug-structures-displayed-first-time-in-Orlando/97/web/2019/04?utm_source=Facebook&utm_medium=Social&utm_campaign=CEN

20190404lnp1-tak981.jpg

Credit: Tien Nguyen/C&EN

Presenter: Steven Paul Langston, associate director at Takeda Pharmaceuticals International

Target: Sumo activating enzyme

Disease: Solid tumors

Reporter’s notes: Langston gave the last talk of the morning session, placing him in the “precarious position of being between you and lunch,” he said. Takeda acquired this drug development program, falling under the umbrella of immuno-oncology, along with Millenium Pharmaceuticals in 2008. The team targeted a pathway known as SUMOylation, a protein post translation modification that is implicated in a number of cellular processes including immune response. In SUMOylation, enzymes attach a small protein to another protein. They found that inhibiting this pathway activates a type I interferon response in immune cells. How the molecule, TAK-981, inhibits this pathway is quite complicated, Langston said. TAK-981 forms an adduct with a small ubiquitin like modifier (SUMO) to inhibit a SUMO activating enzyme that catalyzes SUMOylation. While the synthesis of TAK-981 is fairly short, it requires a nonideal chiral chromatography separation after the first step. TAK-981 is in Phase I clinical trials as an intravenous infusion for patients with metastatic solid tumors or lymphomas.

Patent ID Title Submitted Date Granted Date
US2018311239 HETEROARYL COMPOUNDS USEFUL AS INHIBITORS OF SUMO ACTIVATING ENZYME 2018-03-16
US9962386 HETEROARYL COMPOUNDS USEFUL AS INHIBITORS OF SUMO ACTIVATING ENZYME 2017-04-17
US9683003 HETEROARYL COMPOUNDS USEFUL AS INHIBITORS OF SUMO ACTIVATING ENZYME 2015-06-30 2016-01-14

//////////TAK-981, TAK 981, Phase I,  Lymphoma, Solid tumours, TAKEDA, 

Cc3sc(cc3[C@@H]1NCCc2ccc(Cl)cc12)C(=O)c5cncnc5N[C@@H]4C[C@H](COS(N)(=O)=O)[C@@H](O)C4

https://cen.acs.org/pharmaceuticals/drug-discovery/Drug-structures-displayed-first-time-in-Orlando/97/web/2019/04?utm_source=Facebook&utm_medium=Social&utm_campaign=CEN

BIIB-095


str1

GCZUIPVRHLYYOG-BEFAXECRSA-N.png

BIIB-095

ROTATION (+)

1493790-64-9 CAS free form,

1493772-48-7 cas Hcl salt

cas 1493790-65-0, 1496563-32-6 ,SULPHATE ???

cas 1496563-31-5  SULFATE 1;1

cas 1496563-32-6 SULFATE HYDRATE 1;1;1

(2R,5S)-7-methyl-2-[4-methyl-6-[4-(trifluoromethyl)-phenyl]pyrimidin-2-yl]-1 ,7-diazaspiro[4.4]nonan-6-one

1,7-Diazaspiro[4.4]nonan-6-one, 7-methyl-2-[4-methyl-6-[4-(trifluoromethyl)phenyl]-2-pyrimidinyl]-, (2R,5S)-

C20 H21 F3 N4 O, 390.40

  • Originator Biogen
  • Class Analgesics
  • Mechanism of Action Nav1.7 voltage-gated sodium channel inhibitors
  • Phase I Neuropathic pain
  • 29 Mar 2018 Phase-I clinical trials in Neuropathic pain (In volunteers) in United Kingdom (PO) (NCT03454126)
  • 05 Mar 2018 Biogen plans a phase I trial for Pain, including Neuropathic pain (In volunteers) in USA (PO) (NCT03454126)
  • 05 Mar 2018 Preclinical trials in Neuropathic Pain in USA (PO), before March 2018

In March 2018, a randomized, double blind, placebo controlled, single and multiple-ascending dose, dose-escalation phase I study ( NCT03454126; 255HV101; 2017-003982-90) was initiated in the UK in healthy subjects (expected n = 80) to evaluate the safety, tolerability and pharmacokinetics of BIIB-095. At that time, the trial was expected to complete in December 2018

Biogen is developing BIIB-095, a voltage-gated sodium channel 1.7 inhibitor, for the potential oral treatment of neuropathic pain [2027279], [2027426]. In March 2018, a phase I trial was initiated in healthy subjects

Biogen is developing oral agent BIIB-095 for the treatment of chronic pain, including neuropathic pain. A phase I clinical trial is under way in healthy volunteers.

The compound was first claimed in WO2013175205 , for treating schizophrenia, assigned to subsidiary Convergence Pharmaceuticals Limited , naming some of the inventors. This might present the structure of BIIB-095 , a voltage-gated sodium channel 1.7 inhibitor, being developed by Biogen for the oral treatment of neuropathic pain; in March 2018, a phase I trial was initiated in healthy subjects.

PATENT

WO2013175205

CONTD………………

INTERMEDIATE

WO 2013175206

US 20150119404

https://patents.google.com/patent/US20150119404

Patent

WO-2019067961

https://patentscope2.wipo.int/search/en/detail.jsf;jsessionid=4E8EDA900F4ACD794E922F827F6F20D5?docId=WO2019067961&tab=PCTDESCRIPTION&office=&prevFilter=&sortOption=Pub+Date+Desc&queryString=&recNum=7931&maxRec=74545645

Novel salts (citrate, mesylate, hydrosulfate, saccharinate and oxalate) forms of 7-methyl-2-[4-methyl-6-[4-(trifluoromethyl)-phenyl]pyrimidin-2-yl]-1,7-diazaspiro[4.4]nonan-6-one, processes for their preparation and compositions comprising them are claimed. Also claimed are their use for treating diseases and conditions mediated by modulation of voltage-gated sodium channels.

Voltage-gated sodium channels are responsible for the initial phase of the action potential, which is a wave of electrical depolarisation usually initiated at the soma of the neuron and propagated along the axon to the terminals. At the terminals, the action potential triggers the influx of calcium and the release of neurotransmitter. Drugs, such as lidocaine, that block voltage-gated sodium channels are used as local anaesthetics. Other sodium channel blockers, such as lamotrigine and carbamazepine are used to treat epilepsy. In the latter case, partial inhibition of voltage-gated sodium channels reduces neuronal excitability and reduces seizure propagation. In the case of local anaesthetics, regional block of sodium channels on sensory neurons prevents the conduction of painful stimuli. A key feature of these drugs is their state-dependent mechanism of action. The drugs are thought to stabilise an inactivated conformation of the channel that is adopted rapidly after the channel opens. This inactivated state provides a refractory period before the channel returns to its resting (closed) state ready to be reactivated. As a result, state-dependent sodium channel blockers inhibit the firing of neurons at high frequency, for example in response to painful stimuli, and will help to prevent repetitive firing during periods of prolonged neuronal depolarisation that might occur, for example, during a seizure. Action potentials triggered at lower frequencies, for example in the heart, will not be significantly affected by these drugs, although the safety margin differs in each case, since at high enough concentrations each of these drugs is capable of blocking the resting or open states of the channels.

The voltage-gated sodium channel family is made up of 9 subtypes, four of which are found in the brain, NaV1.1 , 1.2, 1.3 and 1.6. Of the other subtypes, NaV1.4 is found only in skeletal muscle, NaV1.5 is specific to cardiac muscle, and NaV1.7, 1.8, and 1.9 are found

predominantly in sensory neurons. The hypothesised binding site for state-dependent sodium channel blockers is the local anaesthetic (LA) binding site in the inner vestibule of the pore on transmembrane S6 of domain IV. Critical residues are located in a highly conserved region among the different subtypes, thus presenting a challenge for the design of new subtype selective drugs. Drugs such as lidocaine, lamotrigine and carbamazepine do not distinguish between the subtypes. However, selectivity can be achieved, and can be further enhanced functionally, as a result of the different frequencies at which the channels operate.

Drugs that block voltage-gated sodium channels in a state-dependent manner are also used in the treatment of bipolar disorder, either to reduce symptoms of mania or depression, or as mood stabilisers to prevent the emergence of mood episodes. Clinical and preclinical evidence also suggests that state-dependent sodium channel blockers may help to reduce the symptoms of schizophrenia. For example, lamotrigine has been shown to reduce symptoms of psychosis induced by ketamine in healthy human volunteers, and furthermore, studies in patients suggest that the drug can augment the antipsychotic efficacy of some atypical antipsychotic drugs, such as clozapine or olanzapine. It is hypothesised that efficacy in these psychiatric disorders may result in part from a reduction of excessive glutamate release. The reduction in glutamate release is thought to be a consequence of sodium channel inhibition in key brain areas, such as the frontal cortex. However, interaction with voltage-gated calcium channels may also contribute to the efficacy of these drugs.

WO 2013/175205 (Convergence Pharmaceuticals Limited) describes (2R,5S)-7-methyl-2-[4-methyl-6-[4-(trifluoromethyl)-phenyl]pyrimidin-2-yl]-1 ,7-diazaspiro[4.4]nonan-6-one hydrochloride, sulfuric acid salt and sulfuric acid salt hydrate which are claimed to be modulators of voltage-gated sodium channels. The object of the invention is to identify alternative salts of said compound which have advantageous properties.

Example 1

(2R,5S)-7-Methyl-2-[4-methyl-6-[4-(trifluoromethyl)-phenyl]pyrimidin-2-yl]-1,7-diazaspiro[4.4]nonan-6-

To a solution of (2R,5S)-7-methyl-2-[4-methyl-6-[4-(trifluoromethyl)-phenyl]pyrimidin-2-yl]-1 ,7-diazaspiro[4.4]nonan-6-one (which may be prepared in accordance with the procedure described in Example 1 of WO 2013/175205) (4.45g, 0.0114 mol) dissolved in absolute ethanol (66.82 ml, 15 vol) at 45 °C was added a solution of citric acid in ethanol (1 M, 1.05 equiv. 12 ml) over a period of 2-3 minutes. The solution was aged at 45 °C for a period of 1 hour. After 30 minutes a seed of citrate salt (0.1 wt%) was added and the mixture allowed to cool over approximately 2 hours and mature for 18 hours at ambient temperature (approximately 10-15 °C). Following maturation the salt was noted to be a very thick suspension (white) that required mobilisation with 20 ml additional ethanol and a further maturation period of 2 hours at ambient temperature. Filtration was carried out under vacuum and the vessel and cake rinsed with 15 ml ethanol. The de-liquored cake was dried further in a vacuum oven at 50 °C to provide 6.0 g of crystalline white solid (91 % yield).

H NMR (400MHz, DMSO-D6): δΗ 1.90-2.05 (2H, m), 2.10-2.20 (2H, m,), 2.20-2.30 (1 H, m), -2.50 (1 H, m, partially masked by solvent)), 2.55-2.68 (4H, m), 2.56 (3H, s), 2.79 (3H, s),

3.28-3.40 (2H, m), 4.79 (1 H, t, J= 8.0 Hz), 7.92 (2H, d, J = 8.4 Hz), 8.03 (1 H, s), 8.45 (2H, d, J= 8.8Hz) ppm, (exchangeables not reported)

Characterisation of Example 1

The XRPD of Example 1 is presented in FIG. 1 and the DSC/TGA of Example 1 is presented in FIG. 2. The citrate salt of Example 1 displayed the following characteristics:

1 endotherm onset: 171.82°C

peak maximum: 174.55°C

There was an endotherm post the main endotherm.

There was no weight reduction until ca 168°C had been reached. The weight reduction commenced with the start of the main endotherm and coincided with the endotherm post the main endotherm which indicated that this thermal event was the onset of compound decomposition and loss of citric acid. Thermal events >220°C were due to compound decomposition.

The XPRD data in FIG. 1 demonstrated that under different extremes of humidity indicate a stable crystalline form of the citrate salt of Example 1 with no tendency to form hydrates. This is supported by DSC/TGA data in FIG. 2 which show clear transitions and no evidence of solvates.

Aqueous solubility of the citrate salt (Example 1) = 22mg/ml (25°C).

Example 2

(2R,5S)-7-Methyl-2-[4-methyl-6-[4-(trifluoromethyl)-phenyl]pyrimidin-2-yl]-1,7-diazaspiro[4.4]nonan-6-one ) salt (E2)

To a solution of (2R,5S)-7-methyl-2-[4-methyl-6-[4-(trifluoromethyl)-phenyl]pyrimidin-2-yl]-1 ,7-diazaspiro[4.4]nonan-6-one (which may be prepared in accordance with the procedure described in Example 1 of WO 2013/175205) (4.45g, 0.0114 mol) dissolved in absolute ethanol (66.82 ml, 15 vol) at 45 °C was added a solution of methanesulfonic acid in ethanol (1 M, 1.05 equiv. 12 ml) over a period of 2-3 minutes. The solution was aged at 45 °C for a period of 1 hour. After 10 minutes nucleation and gradual crystallisation was noted to afford a thick mixture. Additional ethanol was added (10 ml) to mobilise the suspension that was then allowed to cool over approximately 2 hours and mature for 18 hours at ambient temperature (approximately 10-15 °C). Following maturation the salt was noted to be a thin, mobile suspension (white) that was filtered under vacuum and the vessel and cake rinsed with 15 ml ethanol. The de-liquored cake was dried further in a vacuum oven at 50 °C to provide 4.0 g of crystalline white solid (72% yield).

H NMR (400MHz, DMSO-D6): δΗ 2.1-2.45 (4H, m), 2.27 (3H, s), 2.50-2.75 (2H, m), 2.61 (3H, s), 2.86 (3H, s), 3.35-3.50 (2H, m), 5.20 (1 H, t, J = 8 Hz), 7.96 (2H, d, J = 8.8 Hz), 8.17 (1 H, s), 8.51 (2H, d, J = 8.4Hz), 9.45 (1 H, br), 10.16 (1 H, br) ppm.

Characterisation of Example 2

The XRPD of Example 2 is presented in FIG. 3 and the DSC/TGA of Example 2 is presented in FIG. 4. The DSC thermograph of the methanesulfonate (mesylate) (Example 2) displayed the following characteristics:

One distinct endotherm onset: 247.34°C

peak maximum: 250.34°C

The TGA thermograph showed no weight reduction until ca 250°C had been reached. The weight reduction commenced with the start of the main endotherm and indicated that this thermal event was the onset of compound decomposition. There is no evidence of entrapped solvents or water.

The XPRD data in FIG. 3 demonstrated that under different extremes of humidity indicate a stable crystalline form of the mesylate salt of Example 2 with no tendency to form hydrates. This is supported by DSC/TGA data in FIG. 4 which show clear transitions and no evidence of solvates.

Aqueous solubility of the mesylate salt (Example 2) = 65mg/ml (25°C).

Example 3

Preparation of (2R,5S)-7-methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1,7-diazaspiro[4.4]nonan-6-one hydrosulfate single crystals: 25.0 mg of (2R,5S)-7-Methyl-2-(4-methyl-6-(4-(trifluorome

one hydrosulfate was added to 4 mL vial. 1.000 mL of anhydrous EtOH was added, and the sample was filtered. Anhydrous hexanes were added dropwise until the solution neared the precipitation point. The vial was sealed and left undisturbed for 24 hr, after which time a crop of single crystals was evident. The sample was sent for single crystal analysis and confirmed as the anhydrous (2R,5S)-7-Methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1 ,7-diazaspiro[4.4]nonan-6-one hydrosulfate form (FIGs. 5A-5B).

Example 4

Preparation of (2R,5S)-7-methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1,7-diazaspiro[4.4]nonan-6-one freebase: 8.00 g of (2R,5S)-7-Methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1 ,7-diazaspiro[4.4]nonan-6-one hydrosulfate (JM Lot R-2017-4323 D 301) was added to a 1 L Erlenmeyer flask and suspended and stirred vigorously in 400 mL of THF. 20% K2C03 (250 mL) was added and dissolved. The mixture was transferred to 1 L sep. funnel. 100 mL EtOAc was added and the aqueous and organic layers were separated. The aqueous layer was re-extracted with 50 mL of EtOAc and the combined organics were back-extracted with brine (100 mL) and water (100 mL). Due to fairly poor separation, a significant quantity of MgSCU was required to dry the solution. The solution was reduced via Rotavap (45 °C) to -50 mL, transferred to a 100 mL RB flask, reduced down to -10 mL, transferred to 20 mL scintillation vial and continued to be reduced to a thick oil. The oil was left on the Rotavap for another hour and a “wet” solid was obtained. Loosened solids on the bottom of the vial were left on the Rotavap for 1 hr with no heat applied to obtain a chunky solid. The contents was transferred to a mortar and pestle, ground to powder and fine granules, placed back in a 20 mL scintillation vial and left on a Rotavap overnight to obtain a dry solid (5.1 g). The XRPD pattern of (2R,5S)-7-Methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1 ,7-diazaspiro[4.4]nonan-6-one freebase is shown in FIG. 6.

Example 5

Preparation of (2R,5S)-7-methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1,7-diazaspiro[4.4]nonan-6-one saccharinate: 199.7 mg of (2R,5S)-7-Methyl-2-(4-

methyl-6-(4-(trifluoromethyl)phenyl)pyrirnidin-2-yl)-1 ,7-diazaspiro[4.4]nonan-6-one free base (0.5115 mmol) was dissolved in 4.2 mL of 2-Me-THF. 98.1 mg of saccharin (0.5106 mmol) was dissolved in 4.2 mL of 2-Me-THF. Saccharin was added to the freebase, and after 15 seconds the mixture began to precipitate and solidify. 10 mL of 2-Me-THF was added and stirred at max rpm as to provide a thick white suspension in 10 min. The suspension was filtered, air dried under vacuum for 10 min on frit, then dried under a stream of nitrogen for 30 min resulting in 215 mg of white solid product. The XRPD pattern for (2R,5S)-7-Methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1 ,7-diazaspiro[4.4]nonan-6-one saccharinate is shown in FIG. 7.

Example 6

Preparation of (2R,5S)-7-methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1,7-diazaspiro[4.4]nonan-6-one oxalate: 403 mg of (2R,5S)-7-Methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1 ,7-diazaspiro[4.4]nonan-6-one freebase was dissolved in 4.03 mL EtOH. 1.000 mL of this solution was added to a 4 mL vial. 23.8 mg of oxalic acid was dissolved in 1.000 mL of EtOH and added dropwise to the stirring (2R,5S)-7-Methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1 ,7-diazaspiro[4.4]nonan-6-one freebase solution. After 5 min, a white precipitate was evident and 2.000 mL of EtOH was added to the slurry to aid stirring. The resulting suspension was stirred overnight. The following day the suspension was filtered and dried on a frit under vacuum for 10 min yielding 106 mg of white solid. The XRPD pattern for (2R,5S)-7-Methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1 ,7-diazaspiro[4.4]nonan-6-one oxalate is shown in FIG. 8.

Example 7

The single crystal structural information and refinement parameters for (2R,5S)-7-Methyl-2-(4-methyl-6-(4-(trifluoromethyl)phenyl)pyrimidin-2-yl)-1 ,7-diazaspiro[4.4]nonan-6-one hydrosulfate are shown in Table 1.

Table 1.

Largest peak, hole / e A-3 0.363, -0.264

The most prominent XRPD diffraction peaks were (2Θ): 7.8±0.2°, 8.1±0.2°, 12.6±0.2°, 14.3±0.2°, 16.5±0.2°, 18.5±0.2°, 19.6±0.2°, 24.8±0.2° and 25.3±0.2°.

PATENTS

US2018360833NOVEL PYRIMIDINYL-DIAZOSPIRO COMPOUNDS2018-06-27

Patent ID Title Submitted Date Granted Date
US2017304303 Novel Pyrimidinyl-DiazoSpiro Compounds 2017-07-11
US9737536 Novel Pyrimidinyl-DiazoSpiro Compounds 2016-05-25 2016-09-15
US2016184306 Novel Pyrimidinyl-DiazoSpiro Compounds 2016-02-15 2016-06-30
US9309254 NOVEL COMPOUNDS 2013-05-22 2015-04-30
US9376445 NOVEL COMPOUNDS 2013-05-22 2015-06-18

////////////////BIIB-095, BIIB095, BIIB 095, PHASE 1

CC1=NC(=NC(=C1)C2=CC=C(C=C2)C(F)(F)F)C3CCC4(N3)CCN(C4=O)C

VNRX-7145


str1

str1

CAS 1842399-68-1

MF C19 H26 B N O7

MW 391.22

2H-1,2-Benzoxaborin-8-carboxylic acid, 3,4-dihydro-2-hydroxy-3-[(1-oxopropyl)amino]-, (2-ethyl-1-oxobutoxy)methyl ester, (3R)-

The VNRX-7145 combination is now in Phase I studies to treat resistant urinary tract infections.

str1

VNRX-7145

PATENT

WO 2015191907

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2015191907

ntibiotics are the most effective drugs for curing bacteria-infectious diseases clinically. They have a wide market due to their advantages of good antibacterial effect with limited side effects. Among them, the beta-lactam class of antibiotics (for example, penicillins, cephalosporins, and carbapenems) is widely used because they have a strong bactericidal effect and low toxicity.

[0005] To counter the efficacy of the various beta-lactams, bacteria have evolved to produce variants of beta-lactam deactivating enzymes called beta-lactamases, and in the ability to share this tool inter- and intra-species. These beta-lactamases are categorized as“serine” or“metallo” based, respectively, on presence of a key serine or zinc in the enzyme active site. The rapid spread of this mechanism of bacterial resistance can severely limit beta-lactam treatment options in the hospital and in the community.

SCHEME 1

SCHEME 2

SCHEME 3

[00390] Alternatively, (II) can be obtained by treatment of (I) with hydrochloric acid (around 3-5 Molar in dioxane) in an alcohol solvent such as methanol, ethanol, or n-butanol at a temperature between room temperature and 120 ºC (SCHEME 4).

SCHEME 4

SCHEME 5

EXAMPLE 62: (R)-2-Hydroxy-3-propionylamino-3,4-dihydro-2H-benzo[e][1,2]oxaborinine-8-carboxylic acid

Step 1. Synthesis of 2-Methoxy-3-[2-propionylamino-2-(2,9,9-trimethyl-3,5-dioxa-4-bora-tricyclo[6.1.1.02,6]dec-4-yl)-ethyl]-benzoic acid tert-butyl ester.

[00540] Prepared from [(1S)-2-(3-tert-butoxycarbonyl-2-methoxy-phenyl)-1-chloro-ethyl]boronic acid (+) pinanediol ester and propionic acid following the procedure in Step 2 of Example 1. The crude product was purified by flash chromatography on silica gel (25-100% EtOAc/Hexane). ESI-MS m/z 486 (MH)+.

Step 2. Synthesis of (R)-2-Hydroxy-3-propionylamino-3,4-dihydro-2H-benzo[e][1,2]oxaborinine-8-carboxylic acid.

[00541] Prepared from 2-Methoxy-3-[2-propionylamino-2-(2,9,9-trimethyl-3,5-dioxa-4-bora-tricyclo[6.1.1.02,6]dec-4-yl)-ethyl]-benzoic acid tert-butyl ester following the procedure described in Step 3 of Example 1. The crude product was purified by reverse phase preparative HPLC and dried using lyophilization. ESI-MS m/z 264 (MH)+

CLIP

https://cen.acs.org/pharmaceuticals/drug-discovery/Drug-structures-displayed-first-time-in-Orlando/97/web/2019/04?utm_source=Facebook&utm_medium=Social&utm_campaign=CEN

Candidate: VNRX-7145

20190404lnp1-vnrx7145.jpg

Credit: Tien Nguyen/C&EN

Presenter: Christopher John Burns, president and chief executive officer of VenatoRx Pharmaceuticals

Target: β-lactamases

Disease: Resistant urinary tract infections

Reporter’s notes: Having unveiled an antibacterial candidate at last spring’s first time disclosures session, Burns was back with another, this time the molecule can be taken orally. Both VenatoRx (pronounced Ven-a-tor-ix) compounds resuscitate the activity of β-lactam drugs, which make up more than 60% of all antibiotics prescribed. Unfortunately, many bacteria have grown resistant to these antibiotics. The new compounds rescue the old antibacterials by inhibiting β-lactamases, enzymes that chew up the antibiotics. To test the activity of new β-lactamase-targeting compounds, the researchers settled on several “sentinel” bacteria strains. Then to find a candidate with oral bioavailability, the team focused on molecules with low polarity and low molecular weight. They found VNRX-7145, developed as a prodrug in which esterases in the liver clip off the tips of the molecule to reveal the active drug. VNRX-5133, disclosed at last year’s meeting, had to be delivered intravenously along with another IV-antibiotic Cefepime, and targeted serine and metallo β-lactamases. The new oral candidate VNRX-7145 inhibits serine β-lactamases with Ceftibuten as its partner. The VNRX-7145 combination is now in Phase I studies to treat resistant urinary tract infections.

////////////VNRX-7145, VNRX7145, VNRX 7145, Phase I, VenatoRx

CCC(CC)C(=O)OCOC(=O)c1cccc2C[C@H](NC(=O)CC)B(O)Oc12

CCC(CC)C(=O)OCOC(=O)c1cccc2C[C@H](NC(=O)CC)B(O)Oc12

LHC 165


SDLWKRZBLTZSEL-UHFFFAOYSA-N.png

str1

LHC165

3-[5-amino-2-[2-[4-[2-(3,3-difluoro-3-phosphonopropoxy)ethoxy]-2-methylphenyl]ethyl]benzo[f][1,7]naphthyridin-8-yl]propanoic acid

C29H32F2N3O7P, 603.56 g/mol

CAS  1258595-14-0

5-Amino-2-[2-[4-[2-(3,3-difluoro-3-phosphonopropoxy)ethoxy]-2-methylphenyl]ethyl]benzo[f][1,7]naphthyridine-8-propanoic acid

Benzo[f][1,7]naphthyridine-8-propanoic acid, 5-amino-2-[2-[4-[2-(3,3-difluoro-3-phosphonopropoxy)ethoxy]-2-methylphenyl]ethyl]-

  • Originator Novartis
  • Class Antineoplastics
  • Mechanism of Action
  • Undefined mechanism
  • Phase I Solid tumours
  • 31 Jan 2018 Phase-I clinical trials in Solid tumours (Combination therapy, Inoperable/Unresectable, Late-stage disease, Metastatic disease, Second-line therapy or greater) in USA, Belgium, Italy, Japan (Intratumoural) (NCT03301896)
  • 31 Jan 2018 Phase-I clinical trials in Solid tumours (Inoperable/Unresectable, Late-stage disease, Metastatic disease, Monotherapy, Second-line therapy or greater) in USA, Japan, Italy, Belgium (Intratumoural) (NCT03301896)
  • 10 Oct 2017 Novartis plans a phase I trial for Solid tumours (Monotherapy, Combination therapy, Inoperable/Unresectable, Late-stage disease, Metastatic disease, Second-line therapy or greater) in USA, Belgium, Canada, France, Germany, Italy, South Korea and Spain in November 2017 (Intratumoural) (NCT03301896)

PATENT

WO 2010144734

PATENT

US 20110053893

PATENT

WO 2011130379

PATENT

WO 2011027222

 

Scheme (III)

Scheme (IV)

Scheme (V)

Example 19 (Table 1: Compound 19): Synthesis of 3-(5-amino-2-(4-(2-(3,3-difluoro-3-phosphonopropoxy)ethoxy)-2-methylphenethyl)benzo[f][ 1, 7]naphthyridin-8-yl)propanoic acid (19)

Scheme 6

Step 1: (E)-ethyl 3-(3-(tert-butoxycarbonylamino)-4-chlorophenyl)acrylate (6-3)

[517] To a solution of tert-butyl 5-bromo-2-chlorophenylcarbamate (6-1) (1.0 equiv.) in acetonitrile (0.3 M) and EtOH (0.5 M) was added K2C03 (2.0 equiv.). The reaction was degassed and flushed with N , then added (E)-ethyl 3-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)acrylate (6-2) (1.2 equiv.) and Pd(PPh3)4 (0.1 equiv.). The reaction was flushed again with N2 and stirred at 100 °C overnight. After cooling to room temperature, hexane was added, and the mixture was filtered through a pad of silica, eluting with EA/Hex (1 : 1) until the product was completely eluted. The filtrate was concentrated and purified on Combiflash, eluting with 0-15% EA in Hex to give (E)-ethyl 3-(3-(tert-butoxycarbonylamino)-4-chlorophenyl)acrylate (6-3) as a white solid.

Step 2: ethyl 3-(3-(tert-butoxycarbonylamino)-4-chlorophenyl)propanoate (6-4)

[518] To a solution of (E)-ethyl 3-(3-(tert-butoxycarbonylamino)-4-chlorophenyl)acrylate (6-3) (1.0 equiv.) in ethyl acetate/ethanol (1 : 1 , 0.3 M) was added Wilkinson’s catalyst (0.10 equiv.).

Hydrogen gas was introduced via a ballon, and the reaction was stirred at room temperature for 24 hours. The mixture was filtered through a pad of celite, washing with dichloromethane. The filtrate was concentrated in vacuo and purified by Combiflash using 0-10% ethyl acetate in hexane to give ethyl 3-(3-(tert-butoxycarbonylamino)-4-chlorophenyl)propanoate (6-4) as a solid.

Step 3: ethyl 3-(3-(tert-butoxycarbonylamino)-4-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)phenyl)propanoate (6-5)

[519] A solution of ethyl 3-(3-(tert-butoxycarbonylamino)-4-chlorophenyl)propanoate (6-4) (1 .0 equiv.), 4,4,4,,4′,5,5,5′,5′-octamethyl-2,2′-bi(l ,3,2-dioxaborolane) (2.0 equiv.), tris(dibenzylideneacetone)dipalladium(0) (0.05 equiv.), 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl (0.20 equiv.), and potassium acetate (2.0 equiv.) in 1 ,4-dioxane (0.2 M) was degassed and stirred at 100 °C overnight. After cooling to ambient temperature, the reaction content was concentrated in vacuo. The crude material was purified by Combiflash using 0-50% ethyl acetate in hexane to afford ethyl 3-(3-(tert-butoxycarbonylamino)-4-(4,4,5,5-tetramethyl- 1 ,3,2-dioxaborolan-2-yl)phenyl)propanoate (6-5) as a brown oil. The product was stored at -20°C and used within a month of synthesis.

Step 4: l-bromo-4-(methoxymethoxy)-2-methylbenzene (6-7)

[520] To a solution of 4-bromo-3-methylphenol (6-6) (1.0 equiv.) in DMF (0.5 M) at 0 °C was added portionwise 60% wt NaH (1.5 equiv.). The addition was controlled such that internal reaction temperature never went above 10 °C. The reaction was stirred at room temperature for 45 minutes, then a solution of chloro(methoxy)methane (1.2 equiv.) in DMF (3 M) was added dropwise via additional funnel. The reaction was stirred at room temperature for 3.5 hours, and then quenched by pouring into ice. The resulting mixture was stirred at room temperature for 1 hour. Ether was added, and the two layers were separated. The aqueous layer was extracted (lx) with ether. The combined organic layers were washed with water (2x), brine, dried over MgS04, and concentrated to give 1 -bromo-4-(methoxymethoxy)-2-methylbenzene (6-7) as a colorless oil. The crude material was used in the next step without further purification.

Step 5: triethylf (4-(methoxymethoxy)-2-methylphenyl)ethynyl)silane

[521] A solution of l -bromo-4-(methoxymethoxy)-2-methylbenzene (1.0 equiv.), triethylamine (5.0 equiv.) in DMF (0.5 M) was degassed and flushed with nitrogen. To the reaction was added TES-acetylene (1.05 equiv.), Cul (0.098 equiv.), and Pd(PPh3)2Cl2 (0.098 equiv.). The reaction was heated to 60 °C and stirred overnight. After cooling to room temperature, water and ether were added. The layers were separated, and the organic layer was washed with water (2x). The organic layer was separated and passed through a pad of silica (packed with hexane). The silica was eluted with 10% EA in Hex. The fractions were combined and concentrated to give triethyl((4-(methoxymethoxy)-2-methylphenyl)ethynyl)silane as a black oil. The crude material was used in the next step without further purification.

Step 6: l-ethynyl-4-(methoxymethoxy)-2-methylbenzene (6-8)

[522] To a solution of triethyl((4-(methoxymethoxy)-2-methylphenyl)ethynyl)silane (1.0 equiv.) at

0 °C was slowly added tetrabutylammonium fluoride (1M solution in THF, 0.20 equiv.). At this

point, the ice-bath was removed and the reaction mixture was allowed to stir at room temperature for 45 minutes. The reaction mixture was then passed through a pad of silica (packed with hexane) and eluted with 20% EtOAc in Hexanes to remove insoluble salts. The crude product was then purified by Combiflash using 0-10% EtOAc in Hexanes to give 1 -ethynyl-4-(methoxymethoxy)-2-methylbenzene (6-8) as a slightly brown liquid.

Step 7: 3-chloro-5-((4-(methoxymethoxy)-2-methylphenyl)ethynyl)picolinonitrile (6-10)

[523] A solution of l -ethynyl-4-(methoxymethoxy)-2-methylbenzene (6-8) (1 .0 equiv.), 3,5-dichloropicolinonitrile (6-9) (0.90 equiv.), Cul (0.10 equiv.), and Pd(PPh3)2CI2 (0.10 equiv.), and triethylamine (5.0 equiv.) in DMF (0.25 M) was degassed and flushed with nitrogen. The reaction mixture was then heated to 60 °C and stirred overnight. After cooling to room temperature, water was added. The mixture was extracted with EA (2x). The combined organic layers were washed with 10% aq NH4OH (2x), brine, and concentrated. The crude material was filtered through a pad of silica (wetted with hexane). The silica was eluted with 10% EA in Hex. The fractions were combined and concentrated. The resulting solids were washed in hot ether and filtered to give a yellow solid, which was used in the next step without further purification. The filtrate was concentrated and purified by Combiflash using 0- 10% EtOAc in Hexanes to give 3-chloro-5-((4-(methoxymethoxy)-2-methylphenyl)ethynyl)picolinonitrile (6-10) as a yellow solid.

Step 8: ethyl 3-(5-amino-2-((4-(methoxymethoxy)-2-methylphenyl)ethynyl)-ben∑o fJfl, 7J

naphthyridin-8-yl)propanoate (6-11)

[524] A solution of 3-chloro-5-((4-(methoxymethoxy)-2-methylphenyl)ethynyl)picolinonitrile (6-10) (1 .0 equiv.), ethyl 3-(3-(tert-butoxycarbonylamino)-4-(4,4,5,5-tetramethyl-l ,3,2-dioxaborolan-2-yl)phenyl)propanoate (6-5) (1.25 equiv.), tris(dibenzylideneacetone)dipalladium(0) (0.10 equiv.), dicyclohexyl(2′,6′-dimethoxybiphenyl-2-yl)phosphine (0.20 equiv.), and sodium bicarbonate (3.0 equiv.) in «-butanol /H20 (5: 1 , 0.2 M) was degassed and stirred at 100 °C overnight. After cooling to ambient temperature, the reaction content was diluted with ethyl acetate and water. The two phases were separated, and the aqueous layer was extracted twice with ethyl acetate. The combined organic layers were washed with brine, dried over anhydrous MgS04, and concentrated in vacuo. The crude material was purified by flash chromatography on a COMBIFLASH® system (1SCO) using 0-40% ethyl acetate in DCM first to remove the impurity, then 0-4% MeOH in DCM to give ethyl 3-(5-amino-2-((4-(methoxymethoxy)-2-methylphenyl)ethynyl)-benzo[f][l ,7]naphthyridin-8-yl) propanoate (6-11). Further purification was accomplished by precipitating and washing in hot ether.

Step 9: ethyl 3-(5-amino-2-(4-(methoxymethoxy)-2-methylphenethyl)benzo[fl[l ]naphthyridin-8-yl)propanoate (6-12)

[525] A solution of ethyl 3-(5-amino-2-((4-(methoxymethoxy)-2-methylphenyl)ethynyl)-benzo[f][l ,7]naphthyridin-8-yl)propanoate (6-11) (1.0 equiv.) in EtOH/THF (3: 1 , 0.16 M) was flushed with nitrogen. Then, 10% wt Pd/C (0.20 equiv. by weight) was added. The reaction was flushed with hydrogen (2x) and stirred under a hydrogen balloon. After 24 hours, the reaction was filtered through a pad of celite, washing with 5%MeOH in DCM. The filtrate was checked for the presence of starting material using LCMS. The hydrogenation reaction was repeated until no more

of the alkyne starting material or alkene intermediate was detected. The crude product was purified by Combiflash using 0-4% eOH in DCM to give ethyl 3-(5-amino-2-(4-(methoxymethoxy)-2-methylphenethyl)benzo[f][l ,7]naphthyridin-8-yl)propanoate (6-12) as a white solid.

Step 10: ethyl 3-(5-amino-2-(4-hydroxy-2-methylphenethyl)benzo[fl[l ]naphthyridin-8-yl)propanoate (6-13)

[526] Ethyl 3-(5-amino-2-(4-(methoxymethoxy)-2-methylphenethyl)benzo[fJ[l ,7]naphthyridin-8-yl)propanoate (6-12) (1 .0 equiv.) was dissolved in EtOH (0.2 M), then added a solution of 4M HC1 in dioxane (0.2 M). The product precipitated out as a yellow salt. After stirring for 3 hours, the reaction was poured into a stirring solution of ether. The mixture was stirred for 10 minutes, then filtered and washed with ether. Ethyl 3-(5-amino-2-(4-hydroxy-2-methylphenethyl)benzo[fJ[l ,7]naphthyridin-8-yl)propanoate (6-13) was obtained as a yellow solid which was dried on vacuum overnight (bis-HCl salt). Alternatively, the crude product was purified by Combiflash using 0-5% MeOH in DCM to give the free base.

Step 11: ethyl 3-(5-amino-2-(4-(2-(3-(diethoxyphosphoryl)-3,3-difluoropropoxy)ethoxy)-2-methylphenethyl)benzo[f] [1 , 7]naphthyridin-8-yl)propanoate ( 6-15)

[527] To a solution of ethyl 3-(5-amino-2-(4-hydroxy-2-methylphenethyl)benzo[fJ [ l ,7]naphthyridin-8-yl)propanoate (6-13) (1.0 equiv.) dissolved in DMF (0.14 M) was added a solution of diethyl 3-(2-bromoethoxy)-l ,l -difluoropropylphosphonate (6-14: described in Example 7 – Step 1) (1 .3 equiv.) in DMF (0.7 M) and cesium carbonate (4 equiv.). The reaction was stirred at 60 °C. After 1.5 hours (or until reaction is complete by LCMS), DCM (2 volume equivalent) was added to the reaction. The solids (inorganic) were filtered, and the filtrate was concentration. The crude product was purified by Combiflash using 0-5%MeOH in DCM to give ethyl 3-(5-amino-2-(4-(2-(3-(diethoxyphosphoryl)-3,3-difluoropropoxy)ethoxy)-2-methylphenethyl)benzo[fJ

[1 ,7]naphthyridin-8-yl)propanoate (6-15) as an oil which upon standing became a white solid.

Step 12: 3-(5-amino-2-(4-(2-(3,3-difluoro-3-phosphompropoxy)ethoxy)-2-methylphenethyl)be o[f]

[1, 7]naphthyridin-8-yl)propanoic acid (19)

[528] To a solution of ethyl 3-(5-amino-2-(4-(2-(3-(diethoxyphosphoryl)-3,3-difluoropropoxy)ethoxy)-2-methylphenethyl)benzo[f][l ,7]naphthyridin-8-yl)propanoate (6-15) (1.0 equiv.) in DCM (0.16 M) at 0 °C was added slowly TMSBr (10 equiv.). The reaction was stirred at room temperature overnight. Additional TMSBr (5.0 equiv.) was added at 0 °C, and the reaction was again stirred at room temperature overnight. The solvent was removed by evaporation and the crude orange solids dried on hi-vac briefly. The solids were suspended in EtOH (0.5 M) and added 2.5 N

NaOH (10.0 equiv.). The reaction was stirred at 80 °C for 3 hours. After cooling to room temperature, the mixture was adjusted to pH 9 to 10 and directly purified on RP-HPLC using a CI 8 column, eluting with 10-40% 95:5 (MeCN/5mM NH4OAc) in l OmM NH4OAc (pH 9) gradient. The fractions containing the product were combined and concentrated in vacuo. The resulting white gel was dissolved in refluxing 1 :1 EtOH/water (0.04 M) with the addition of a few drops of ammonium hydroxide. While hot, the mixture was slowly poured into a stirring hot solution of acetone (0.009

M) preheated at 50 °C. The acetone suspension was slowly cooled to room temperature for 15 minutes with continued stirring, and then sat in an ice bath for 10 minutes. The solids were filtered and washed successively with acetone (2x) and ether (2x). The solids were dried on hi-vac overnight to give the 3-(5-amino-2-(4-(2-(3,3-difluoro-3-phosphonopropoxy)ethoxy)-2-methylphenethyl)benzo [fj[l ,7]naphthyridin-8-yl)propanoic acid (19) as a solid. Ή NMR (Dimethylsulfoxide-d6): δ 9.02 (s, 1 H), 8.82 (s, 1H), 8.55 (d, 1H, J = 8.4 Hz), 7.58 (s, 1H), 7.48 (d, 1 H, J = 8.4 Hz), 7.07 (d, 1H, J = 8.4 Hz), 6.75 (s, 1 H), 6.68 (d, 1H, J = 8.4 Hz), 4.03-4.00 (m, 2H), 3.72-3.68 (m, 4H), 3.16-3.12 (m, 2H), 3.03-2.96 (m, 4H), 2.67-2.64 (m, 2H), 2.33-2.32 (m, 2H), 2.26 (s, 3H). LRMS [M+H] = 604.2

PATENT

US 20120237546

PATENT

WO 2012031140

PATENT

WO 2018211453

Toll-like receptors (TLRs) are pattern recognition receptors which play an essential role in the innate immunity, by recognizing invasion of microbial pathogens and initiating intracellular signal transduction pathways to trigger expression of genes, the products of which can control innate immune responses. Specifically, Toll like receptor (TLR) agonists activate innate immune cells through the TLR-MyD88-NFk and IRF3/7 pathways. TLR7, TLR8, and TLR9 belong to a subfamily of TLRs based on their genomic structure, sequence similarities, and homology. TLR7, TLR8, and TLR9 are located in intracellular endolysosomal compartments and show a unique pattern of cell type-specific expression that is thought to be responsible for different pathogen response profiles.

Small molecule agonists of TLR7 and/or TLR8 have been reported and shown to activate innate immune responses by inducing selected cytokine biosynthesis, the induction of co-stimulatory molecules, and by increased antigen-presenting capacity. Such compounds include imidazoquinoline amine derivatives (U.S. Patent No. 4689338), imidazopyridine amine derivative (U.S. Patent No. 5446153), imidazonaphthyridine derivative (U.S. Patent No.

6194425), oxazoloquinoline amine derivatives (U.S. Patent No. 61 10929); thiazoloquinoline amine derivatives (U.S. Patent No. 61 10929), selenazoloquinoline amine derivatives (U.S. Patent No. 61 10929), pyrazolopyridine derivatives (U.S. Patent No. 9145410), and

benzonaphthyridine amine derivatives (U.S. Patent Nos. 8466167 and 9045470).

The synthetic TLR7 agonist, Imiquimod (1 -(2-methylpropyl)-1 H-imidazo[ 4,5-c]quinolin-4-amine) is FDA-approved in a cream formulation for the topical treatment of cutaneous basal cell carcinoma, actinic keratosis and genital warts, and has limited activity against cutaneous melanoma and breast tumors (J. Immunol. 2014, 193(9) : 4722^1-731 ). Systemic administration of Imiquimod, and structurally similar Resiquimod, is limited by cytokine- mediated adverse effects including severe flu-like symptoms (Expert Opin. Emerging Drugs (2010), 15:544-555). Consequently, Imiquimod is used exclusively in topical applications and is not used to treat deep, non-cutaneous tumors such as melanoma or solid tumors.

An injectable lipid modified imidazoquinoline (TLR7/8 dual agonist) that forms a tissue depot with gradual, sustained release which allows for local TLR triggering activity without systemic cytokine release has been reported (J. Immunol. 2014, 193(9): 4722^731 ). However, this compound was shown to be ineffective for large tumors and in addition the serum concentration of this compound 24 hours post subcutaneous administration decreased by approximately 50% (Journal for ImmunoTherapy of Cancer, 2014, 2:12). Therefore, there remains a need for intratumor administration of a TLR7 agonist with prolonged sustained release, which may benefit the treatment of large tumors.

clip

https://cen.acs.org/pharmaceuticals/drug-discovery/Drug-structures-displayed-first-time-in-Orlando/97/web/2019/04?utm_source=Facebook&utm_medium=Social&utm_campaign=CEN

Candidate: LHC165

20190404lnp1-lhc165.jpg

Credit: Tien Nguyen/C&EN

Presenter: Alex Cortez, senior Investigator I at the Genomics Institute of the Novartis Research Foundation

Target: Toll-like receptor 7 (TLR7)

Disease: Solid tumors

Reporter’s notes: Cortez shared another story in the realm of immuno-oncology, although the program that yielded this compound actually started in the world of vaccines. Cortez’s team had been focusing on vaccine adjuvants, small molecules that turn on the immune system to enhance a vaccine’s effect. They developed one such class of compound that activates toll-like receptor 7 (TLR7), a protein in the immune system that recognizes dangerous-looking molecules and can trigger the release of infection-clearing proteins. After observing TLR7 agonists’ ability to induce an immune response with vaccines, the researchers wondered whether the molecules could also be effective in immuno-oncology.

They found that LHC165 adsorbed to aluminum hydroxide reduced tumor growth in mice and, intriguingly, showed signs of an abscopal effect, in which untreated tumors shrink concurrently with treated tumors. The implication is that if the immune system recognizes one tumor site, it can recognize others. As with several of the candidates presented throughout the day, LHC165 bears a phosphate group and is injected into the tumor. It’s currently in Phase I trials in patients with advanced malignancies, which means they’ve already tried second and third line therapies, as a single agent and in combination with the checkpoint inhibitor PDR001.

US9618508FLOW CYTOMETRY ANALYSIS OF MATERIALS ADSORBED TO METAL SALTS2011-12-142013-12-12
US2014112950COMBINATION VACCINES WITH LOWER DOSES OF ANTIGEN AND/OR ADJUVANT2012-03-022014-04-24
Patent ID Title Submitted Date Granted Date
US9597326 BENZONAPTHYRIDINE COMPOSITIONS AND USES THEREOF 2011-04-13 2013-05-16
US9950062 COMPOUNDS AND COMPOSITIONS AS TLR ACTIVITY MODULATORS 2010-09-01 2012-09-20
US9517263 BENZONAPHTHYRIDINE-CONTAINING VACCINES 2010-06-10 2012-10-18
US2015225432 COMPOUNDS AND COMPOSITIONS AS TLR ACTIVITY MODULATORS 2015-04-24 2015-08-13
US9315530 ADSORPTION OF IMMUNOPOTENTIATORS TO INSOLUBLE METAL SALTS 2011-09-01
Patent ID Title Submitted Date Granted Date
US2016213776 ADSORPTION OF IMMUNOPOTENTIATORS TO INSOLUBLE METAL SALTS 2016-04-07 2016-07-28
US2012177681 Formulation of immunopotentiators 2011-09-01 2012-07-12
US9045470 COMPOUNDS AND COMPOSITIONS AS TLR ACTIVITY MODULATORS 2011-03-03
US2018169204 COMBINATION VACCINES WITH LOWER DOSES OF ANTIGEN AND/OR ADJUVANT 2018-02-02
US9375471 ADJUVANTED FORMULATIONS OF BOOSTER VACCINES 2013-03-08 2013-09-12

//////LHC165, LHC 165, LHC -165, Phase I,  Solid tumours, novartis

O=P(O)(O)C(F)(F)CCOCCOc4ccc(CCc1cc2c3ccc(CCC(=O)O)cc3nc(N)c2nc1)c(C)c4

CC1=C(C=CC(=C1)OCCOCCC(F)(F)P(=O)(O)O)CCC2=CN=C3C(=C2)C4=C(C=C(C=C4)CCC(=O)O)N=C3N

https://cen.acs.org/pharmaceuticals/drug-discovery/Drug-structures-displayed-first-time-in-Orlando/97/web/2019/04?utm_source=Facebook&utm_medium=Social&utm_campaign=CEN

AB 680


str1

MFYLCAMJNGIULC-KCVUFLITSA-N.png

SCHEMBL19100484.png

20190404lnp1-ab680.jpg

AB 680

C20H24ClFN4O9P2, 580.827 g/mol

Cas 2105904-82-1

1H-Pyrazolo[3,4-b]pyridin-4-amine, 6-chloro-N-[(1S)-1-(2-fluorophenyl)ethyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-

[[(2R,3S,4R,5R)-5-[6-chloro-4-[[(1S)-1-(2-fluorophenyl)ethyl]amino]pyrazolo[3,4-b]pyridin-1-yl]-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]methylphosphonic acid

[({[(2R,3S,4R,5R)-5-(6-chloro-4-{[(1S)-1-(2-fluorophenyl)ethyl]amino}-1H-pyrazolo[3,4-d]pyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy}(hydroxy)phosphoryl)methyl]phosphonic Acid

  • Originator C
  • Class Antineoplastics; Small molecules
  • Mechanism of Action 5-nucleotidase inhibitors; Adenosine A2 receptor antagonists
  • Phase I Cancer
  • 19 Nov 2018 Arcus Biosciences plans to initiate a clinical trial in Cancer in first half of 2019
  • 16 Oct 2018 Phase-I clinical trials in Cancer (In volunteers) in Australia (IV) (NCT03677973)
  • 30 Sep 2018 Preclinical pharmacodynamics data in Cancer presented at 4th CRI-CIMT-EATI-AACR International Cancer Immunotherapy Conference (CRI-CIMT-EATI-AACR – 2018)

Clip

https://cen.acs.org/pharmaceuticals/drug-discovery/Drug-structures-displayed-first-time-in-Orlando/97/web/2019/04?utm_source=Facebook&utm_medium=Social&utm_campaign=CEN

Credit: Tien Nguyen/C&EN

Presenter: Kenneth V. Lawson, senior scientist at Arcus Biosciences

Target: Ecto-5’-nucleotidase (CD73)

Disease: Cancer

Reporter’s notes: In the first talk of the day, Lawson introduced the idea of cancer drugs that target the host’s immune system. “Checkpoint inhibitors changed the way we think of treating cancer,” he said. These drugs successfully disrupt the binding interaction between a protein and a checkpoint protein that stops immune T cells from killing cancer cells. As a result, these drugs turn immune cells loose to attack tumor cells. But the drugs work only in about 30-40% of patients—an issue pharmaceutical companies like Arcus hope to address with new immunotherapies that can be taken in combination with checkpoint inhibitors.

Lawson’s team set out to inhibit an enzyme commonly found in tumors called CD73, the second of two enzymes which break down extracellular adenosine trisphosphate (ATP) to adenosine. Adenosine then binds to immunosuppressive receptors on immune cells and shuts them down. Yet developing a small molecule inhibitor of CD73 proved challenging, Lawson said. After striking out with high-throughput screening, the team turned to CD73’s natural substrate for inspiration. However, the molecule possessed more than one phosphate group, which is notoriously a liability for drug molecules because small molecules with such negative changes struggle to cross cell membranes. The team’s goal was to remove the phosphate groups, Lawson says, but things didn’t exactly go according to plan. After showing the audience a series of compounds from structure-activity relationship (SAR) studies—slides no medicinal chemistry talk would be complete without—Lawson revealed the structure of their final clinical compound AB680 as the sound of people flipping notebook sheets rippled across the room. Synthesized in 34% overall yield, the candidate ultimately included two phosphate groups—a feature that surprised audience members.

Tests revealed that AB680 can be given intravenously but the compound also showed moderate oral bioavailability. Lawson suggested a possible route for how the molecule might pass from the digestive tract to the bloodstream, a paracellular mechanism by which molecules cross the epithelium by passing through the space between cells. AB680 showed “extraordinary potency,” inhibiting CD73 in human T-cells at a concentration of 0.008 nM. The compound has a 4 day half-life, which means it could be dosed every two weeks, coinciding with the dosing schedule for patients who receive a checkpoint inhibitor. AB680 is currently in Phase 1 clinical trials with healthy patients.

str1

PATENT

US2017267710

https://patentscope.wipo.int/search/en/detail.jsf?docId=US204141996&tab=PCTDESCRIPTION&maxRec=1000

Purinergic signaling, a type of extracellular signaling mediated by purine nucleotides and nucleosides such as ATP and adenosine, involves the activation of purinergic receptors in the cell and/or in nearby cells, resulting in the regulation of cellular functions. Most cells have the ability to release nucleotides, which generally occurs via regulated exocytosis (see Praetorius, H. A.; Leipziger, J. (1 Mar. 2010) Ann Rev Physiology 72(1): 377-393). The released nucleotides can then be hydrolyzed extracellularly by a variety of cellular membrane-bound enzymes referred to as ectonucleotidases.
      Ectonucleotides catalyze the conversion of ATP to adenosine, an endogenous modulator that impacts multiple systems, including the immune system, the cardiovascular system, the central nervous system, and the respiratory system. Adenosine also promotes fibrosis in a variety of tissues. In the first step of the production of adenosine, ectonucleoside triphosphate diphosphohydrolase 1 (ENTPD1), also known as CD39 (Cluster of Differentiation 39), hydrolyzes ATP to ADP, and then ADP to AMP. In the next step, AMP is converted to adenosine by 5′-nucleotidase, ecto (NT5E or 5NT), also known as CD73 (Cluster of Differentiation 73).
      The enzymatic activities of CD39 and CD73 play strategic roles in calibrating the duration, magnitude, and chemical nature of purinergic signals delivered to various cells (e.g., immune cells). Alteration of these enzymatic activities can change the course or dictate the outcome of several pathophysiological events, including cancer, autoimmune diseases, infections, atherosclerosis, and ischemia-reperfusion injury, suggesting that these ecto-enzymes represent novel therapeutic targets for managing a variety of disorders.
      CD73 inhibition with monoclonal antibodies, siRNA, or small molecules delays tumor growth and metastasis (Stagg, J. (2010) PNAS U.S.A. 107:1547-52). For example, anti-CD73 antibody therapy was shown to inhibit breast tumor growth and metastasis in animal models (Stagg, J. (26 Jan. 2010) PNAS U.S.A, 107(4):1547-52). In addition, the use of antibodies that specifically bind CD73 has been evaluated for the treatment of bleeding disorders (e.g., hemophilia) (U.S. Pat. No. 9,090,697). Recently, there have been several efforts to develop therapeutically useful CD73 small molecule inhibitors. For example, Bhattarai et al. ((2015) J Med Chem 58:6248-63) have studied derivatives and analogs of α,β-Methylene-ADP (AOPCP), one of the most metabolically stable, potent and selective CD73 inhibitors known, and purine CD73 derivatives have been reported in the patent literature (WO 2015/164573). However, the development of small molecules has been hampered due to, for example, less than ideal metabolic stability.
      In view of the role played by CD73 in cancer, as well as a diverse array of other diseases, disorders and conditions, and the current lack of CD73 inhibitors available to medical practitioners, new CD73 inhibitors, and compositions and methods associated therewith, are needed.

Example 92

Synthesis of [({[(2R,3S,4R,5R)-5-(6-chloro-4-{[(1S)-1-(2-fluorophenyl)ethyl]amino}-1H-pyrazolo[3,4-d]pyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy}(hydroxy)phosphoryl)methyl]phosphonic Acid


      The title compound was synthesized in similar fashion to Example 87. 1H NMR (400 MHz, DMSO-d 6) δ 9.28-9.15 (m, 1H), 8.33 (dd, J=1.5, 0.7 Hz, 1H), 7.43 (t, J=7.8 Hz, 1H), 7.29 (dd, J=7.8, 5.6 Hz, 1H), 7.23-7.08 (m, 2H), 6.00 (d, J=4.2 Hz, 1H), 5.65-5.51 (m, 1H), 4.48 (t, J=4.9 Hz, 1H), 4.26 (t, J=4.5 Hz, 1H), 4.05 (dq, J=10.1, 5.9, 5.2 Hz, 2H), 3.88 (dt, J=11.3, 6.0 Hz, 1H), 2.29-2.08 (t, J=20.4 Hz, 2H), 1.53 (d, J=6.8 Hz, 3H). ESI MS [M+H] + for C 19H24ClFN 592, calcd 582.1. found 582.1.

PATENT

WO 2017120508

////////////////ARCUS, AB 680, AB680, AB-680, PHASE 1

https://www.arcusbio.com/wp-content/uploads/2018/04/AACR_AB680_1756_final_90x42-abstract-4886.pdf

https://cen.acs.org/pharmaceuticals/drug-discovery/Drug-structures-displayed-first-time-in-Orlando/97/web/2019/04?utm_source=Facebook&utm_medium=Social&utm_campaign=CEN

Fc1ccccc1[C@H](C)Nc4cc(Cl)nc3c4cnn3[C@@H]2O[C@H](COP(=O)(O)CP(=O)(O)O)[C@@H](O)[C@H]2O

CC(C1=CC=CC=C1F)NC2=CC(=NC3=C2C=NN3C4C(C(C(O4)COP(=O)(CP(=O)(O)O)O)O)O)Cl

CMX-8521, CMX-521


str1

PMQFVTNOZQVIOK-HTVVRFAVSA-N.png

CMX-8521, CMX-521

MF C13 H17 N5 O5,  MW 323.30

CAS Number 2077178-99-3

7H-Pyrrolo[2,3-d]pyrimidine-5-carboxamide, 4-amino-2-methyl-7-β-D-ribofuranosyl-

Nucleoside analogs (oral, norovirus infection), Chimerix

Image result for chimerix

4-amino-7-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-2-methyl-7H-pyrrolo[2,3-d]pyrimidine-5-carboxamide

4-amino-7-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-2-methylpyrrolo[2,3-d]pyrimidine-5-carboxamide

CMX8521 is a nucleoside analog that inhibits the norovirus RNA polymerase. CMX8521 has in vitro activity against mouse and human norovirus.Where possible, Chimerix uses its lipid conjugate technology to build nucleoside-analog antivirals that are orally absorbed and have favorable tissue penetration.

CMX-8521 (presumed to be CMX-521) being developed by Chimerix for treating norovirus infection. In June 2018, a phase II efficacy trial was planned in 2019.

In January 2016, preclinical data were presented at the 34th Annual JP Morgan Healthcare Conference in San Francisco, CA. CMX-8521 had in vitro activity against mouse and human norovirus (EC50 = 2.1; CC50 = 114 microM). A 7-day non GLP toxicology/toxicokinetic study was completed in-life with no clinical or gross post mortem signs of toxicity. No off-target pharmacology was observed in vitro when screened against a panel of 87 receptors, transporters and enzymes associated with adverse pharmacology

PATENT

WO2017024310

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2017024310

 Scheme 1: General Synthesis of Compounds of the Invention

Figure imgf000052_0001

Scheme 2: General Synthesis of Compounds of the Invention

Figure imgf000053_0001

Example 7– Synthesis of Compound 1

Figure imgf000149_0001

[00315] Step 1 (Protocol #1): To a 100-L jacketed reactor were charged 4-amino-6- bromo-2-methyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonitrile (3.00 kg), (3R,4R,5R)-2-acetoxy-5- ((benzoyloxy)methyl)tetrahydrofuran-3,4-diyl dibenzoate (6.60 kg) and DCE (18.89 kg). Stirring was started and DBU (3.61) kg was added. Over a period of 03 h and 14 min, TMSOTf (8.01 kg) was added between 30.6 °C and 37.3 °C. IPC after 01 h and 30 min at approx.32 °C showed 4% of 4-amino-6-bromo-2-methyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonitrile (3.00 kg),

(3R,4R,5R)-2-acetoxy-5-((benzoyloxy)methyl)tetrahydrofuran-3,4-diyl dibenzoate remaining. IPC after 03h and 16 min at approx.32 °C showed 2% 4-amino-6-bromo-2-methyl-7H- pyrrolo[2,3-d]pyrimidine-5-carbonitrile (3.00 kg), (3R,4R,5R)-2-acetoxy-5- ((benzoyloxy)methyl)tetrahydrofuran-3,4-diyl dibenzoate remaining (spec:≤3%). The reaction mixture was diluted with DCM (39.81 kg) and quenched with potable water (15.02 kg) over an 11 min period between 9.5 °C and 15.6 °C. The extractive work-up (at approx.22 °C) was completed by a back extraction of the aqueous phase with DCM (19.90 kg), a wash with sat NaHCO3 (1.3 kg NaHCO3 in 14.9 kg potable water), a back extraction of the bicarbonate phase with DCM (19.71 kg) and a wash with brine (4.5 kg NaCl in 14.9 kg potable water). Note: the reactor was cleaned with potable water, acetone and DCM after each wash/back extraction.

[00316] The drummed organic phase containing the product was charged to the 100-L jacketed reactor through an in-line filter followed by a DCM rinse of the drum and filter with DCM (2.48 kg). The contents of the reactor were distilled to 31 L with the aid of vacuum over a period of 06 h and 04 min with a maximum temperature of 50.1 °C. At this point a thick suspension had formed. Next, over a period of 39 min, IPAc (41.88 kg) was added between 44.5 °C and 49.5 °C and the contents of the reactor were heated to 76.9 °C over a period of 01 h and 25 min. Next, the contents of the reactor were cooled to 9.9 °C over a period of 04 h and 21 min and stirred for 12 h and 26 min with a minimum temperature of 1.6 °C.

[00317] Step 1 (Protocol # 2): To a 100-L jacketed reactor were charged 4-amino-6- bromo-2-methyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonitrile (3.00 kg), (3R,4R,5R)-2-acetoxy-5- ((benzoyloxy)methyl)tetrahydrofuran-3,4-diyl dibenzoate (6.60 kg) and DCE (18.80 kg). Stirring was started and DBU (3.59) kg was added. Over a period of 01 h and 46 min, TMSOTf (7.90 kg) was added between 30.4 °C and 34.2 °C. IPC after 02 h and 49 min at approx.34 °C showed 1% of 4-amino-6-bromo-2-methyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbonitrile remaining (spec: ≤3%). The reaction mixture was diluted with DCM (40/70 kg) and quenched with potable water (14.97 kg) over an 04 min period between 9.9 °C and 18.0 °C. The extractive work-up (at approx.22 °C) was completed by a back extraction of the aqueous phase with DCM (20.34 kg), a wash with sat NaHCO3 (1.30 kg NaHCO3 in 14.90 kg potable water), a back extraction of the bicarbonate phase with DCM (20.65 kg) and a wash with brine (4.50 kg NaCl in 14.96 kg potable water). Note: the reactor was cleaned with potable water, acetone and DCM after each wash/back extraction.

[00318] The drummed organic phase containing the product was charged to the 100-L jacketed reactor through an in-line filter followed by a DCM rinse of the drum and filter with DCM (1.49 kg). The contents of the reactor were distilled to with the aid of vacuum over a period of 04 h and 49 min with a maximum temperature of 45.6 °C. At this point a thick suspension had formed. Next, over a period of 27 min, IPAc (41.70 kg) was added between 45.6 °C and 48.2 °C and the contents of the reactor were heated to 75.7 °C over a period of 01 h and 20 min. Next, the contents of the reactor were cooled to 9.4 °C over a period of 04 h and 15 min and stirred overnight with a minimum temperature of 2.3 °C.

[00319] Step 2: To the reactor were charged (2R,3R,4R,5R)-2-(4-amino-6-bromo-5- cyano-2-methyl-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-5-((benzoyloxy)methyl)tetrahydrofuran-3,4- diyl dibenzoate (10.0 kg), 10% Pd on C (Degussa, Type E101NE/W), trimethylamine (7.3 kg) and THF (44.5 kg). Hydrogen was submitted to the reactor and the mixture was stirred for 03 h and 54 min between 24.7 °C and 19.6 °C at approx.30.8 psig. IPC (HPLC) showed that

(2R,3R,4R,5R)-2-(4-amino-6-bromo-5-cyano-2-methyl-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-5- ((benzoyloxy)methyl)tetrahydrofuran-3,4-diyl dibenzoate could no longer be detected.

[00320] The reaction mixture was filtered over Celite (7.2 kg) and a polish filter and the filter residue was washed with THF (5.2 kg). The combined filtrate and wash was transferred to a 100-L jacketed reactor with the aid of a THF wash (2.12 kg). The contents of the reactor were vacuum distilled with a maximum batch temperature of 30.0 °C over a period of 05 h and 38 min to a final volume of 27 L. IPA (31.48 kg) was charged over a 40 min period to the reactor between 39.7 °C and 53.2 °C. The contents of the reactor were vacuum distilled with a maximum batch temperature of 53.2 °C over a period of 03 h and 02 min to a final volume of 33 L. IPA (48.99 kg) was charged over a 43 min period to the reactor between 53.1 °C and 57.1 °C. The contents of the reactor were heated to 60.2 °C, agitated for 12 min and cooled over a period of 04 and 28 min to 5.4 °C. Cold stirring was continued for a period of 08 h and 55 min with a minimum temperature of 1.1 °C. The slurry was filtered and washed with IPA (9.41 kg, at approx.4.5 °C). The residue was dried under vacuum with a nitrogen bleed for a period of 11 h and 44 min at a maximum temperature of 44.0 °C to provide an LOD of 0.36%. Yield: 6.58 kg (73.9 %).1H NMR confirms structure. Purity: 97.78 % (HPLC, AUC).

[00321] Step 3:

Figure imgf000152_0001

1100 g NaOH dissolved in potable water to a total volume of 1 L; 2 Diluted 500 mL conc. HCl in 2 L total with potable water [00322] A solution of (2R,3R,4R,5R)-2-(4-amino-5-cyano-2-methyl-7H-pyrrolo[2,3- d]pyrimidin-7-yl)-5-((benzoyloxy)methyl)tetrahydrofuran-3,4-diyl dibenzoate and THF was heated to 54 °C and the addition of 2.5 M NaOH was started. The initial addition gave a biphasic mixture and endothermic response (the temperature dropped to 50 °C) but as the addition continued a single phased, clear solution formed which was accompanied by a fast exotherm to 61 °C; the reaction temperature was maintained at 60 °C to 61 °C during the rest of the addition and for an additional 2 ½ h. IPC showed that no (2R,3R,4R,5R)-2-(4-amino-5-cyano-2-methyl- 7H-pyrrolo[2,3-d]pyrimidin-7-yl)-5-((benzoyloxy)methyl)tetrahydrofuran-3,4-diyl dibenzoate was left.

[00323] The reaction mixture was cooled to 21 °C and neutralized with 3 N HCl with external cooling to pH = 7.06 (Denver Instrument UB-10 pH meter equipped with a Sartorius P- P11 pH electrode, the electrode was checked with buffer solutions of pH = 4.00 and pH = 7.00); the mixture continued to cool to 8°C. The resulting neutralized mixture was distilled under vacuum with a pot temperature of 45 °C to 50 °C until the emergence of solids were observed in the pot. The suspension was cooled and stirred for 2 h at 2 °C. The beige suspension was filtered to afford a dark filtrate; the off-white residue was washed once with cold water (500 mL, 5 °C). A first LOD after 16 h gave a value of 18.73 %. HPLC) of the drying material showed the presence of 1.6% benzoate.

[00324] A brief rework study for compound 1, (containing 1.6% benzoic acid per AUC, HPLC) was executed in 10 vol of water (1 g in 10 mL):

● 3 h slurry at ambient

● 3h slurry at 50 °C

● 24 h slurry at ambient

[00325] All three experiments gave compound 1 with less than 0.1 % benzoic acid (UAC, HPLC). The slurries were fluid, were easily stirred and filtration was fast. Short term drying on the filter gave a powder-like solid indicating that a displacement wash with an organic solvent is not needed. Without wishing to be bound by theory, a loss of NMT than 1% is expected

(solubility 1 mg/mL).HPLC data for compound 1 were obtained with a method suitable for polar compounds using a Zorbax Eclipse Plus C18 column (water / ACN / TFA, 97.5 / 2.5 / 0.05). This is the same column used for steps 1 and 2.

[00326] The cold product suspension was filtered and the reactor and residue were washed with cold IPAc (approx.7.5 °C, 13.16 kg and 13.62 kg) until a colorless filtrate had been obtained. The residue was dried under vacuum and a nitrogen bleed≤ 45 °C for a period of 65 h and 19 min to an LOD of 0 %. Yield: 5.87 kg (70.7 %), 1H NMR confirmed identity; HPLC purity 98.84% (AUC). EQUIVALENTS

[0001] The disclosure can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The foregoing embodiments are therefore to be considered in all respects illustrative rather than limiting on the disclosure described herein. Scope of the disclosure is thus indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are intended to be embraced therein.

PATENT

WO-2019060692

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2019060692&tab=PCTDESCRIPTION&maxRec=1000

Novel crystalline forms of 4-amino-7-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl) tetrahydrofuran-2-yl)-2-methyl-7H-pyrrolo[2,3-d]pyrimidine-5-carboxamide and their stable hemihydrate crystalline forms (designated as Form A-G), processes for their preparation and compositions comprising them are claimed. Also claimed is their use for treating viral infection.

Viral infections can have serious adverse effects on individuals and society as a whole. In addition to fatal viral infections such as Ebola, even non-fatal infections can have serious societal and economic consequences. For example, human noroviruses (NV) are the most common cause of epidemic acute gastroenteritis worldwide with an estimated 19-21 million cases each year in the United States including 56,000-71,000 hospitalizations and 570-800 deaths (Hall et al., Emerg.Infect.Dis. 2013 Aug; 19(8): 1198-205).

[0004] 4-amino-7-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl) tetrahydrofuran-2-yl)-2-methyl-7H-pyrrolo [2,3-d]pyrimidine-5-carboxamide (Compound 1) is an antiviral drug.

Formula 1

[0065] As used herein, “Formula I” is understood to encompass all diastereomers of 4-amino-7-(3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-2-methyl-7H-pyrrolo[2,3-d]pyrimidine-5-carboxamide, and pharmaceutically acceptable salts and solvates thereof. The structure of Formula I is shown below:


(Formula I).

[0066] In some embodiments, a compound of Formula I can be 4-amino-7-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-2-methyl-7H-pyrrolo[2,3-d]pyrimidine-5-carboxamide (“Compound 1”), or a pharmaceutically acceptable salt solvate, or isomers (e.g., enantiomers and diastereomers) thereof. The structure of Compound 1 is shown below:

atent ID Title Submitted Date Granted Date
US9701706 Pyrrolopyrimidine nucleosides and analogs thereof 2016-11-22 2017-07-11
US9708359 PYRROLOPYRIMIDINE NUCLEOSIDES AND ANALOGS THEREOF 2016-08-08
US2017253628 PYRROLOPYRIMIDINE NUCLEOSIDES AND ANALOGS THEREOF 2017-05-18

///////////CMX-8521, CMX 8521, CMX-521, PHASE 1

NC(=O)c2cn([C@@H]1O[C@H](CO)[C@@H](O)[C@H]1O)c3nc(C)nc(N)c23

Epitinib


str1

Epitinib succinate; HMPL-813; Huposuan yipitini

1203902-67-3, 430.50, C24 H26 N6 O2

1-Piperazinecarboxamide, 4-ethyl-N-[4-[(3-ethynylphenyl)amino]-7-methoxy-6-quinazolinyl]-

4-Ethyl-N-[4-[(3-ethynylphenyl)amino]-7-methoxy-6-quinazolinyl]-1-piperazinecarboxamide

Cancer; Glioblastoma; Non-small-cell lung cancer

Epitinib is in phase I clinical trials by Hutchison MediPharma for the treatment of solid tumours.

Epitinib succinate is an oral EGFR tyrosine kinase inhibitor in early clinical development at Hutchison China MediTech (Chi-Med) for the treatment of solid tumors and the treatment of glioblastoma patients with EGFR gene amplification.

  • Originator Hutchison MediPharma
  • Class Antineoplastics; Small molecules
  • Mechanism of Action Epidermal growth factor receptor antagonists
  • Phase I/II Glioblastoma; Non-small cell lung cancer
  • No development reported Oesophageal cancer; Solid tumours
  • 28 May 2018 No recent reports of development identified for preclinical development in Oesophageal-cancer in China (PO)
  • 06 Mar 2018 Hutchison Medipharma plans a phase III pivotal study for Non-small cell lung cancer (NSCLC) patients with brain metastasis in China in 2018
  • 06 Mar 2018 Phase-I/II clinical trials in Glioblastoma (Second-line therapy or greater) in China (PO)

Image result for EPITINIB

PATENT

WO2018210255

https://patentscope2.wipo.int/search/en/detail.jsf;jsessionid=42BB6AE0DA712D6A9C7C741E97BDE64C?docId=WO2018210255&tab=FULLTEXT&office=&prevFilter=&sortOption=Pub+Date+Desc&queryString=&recNum=889&maxRec=71731866

Binding of epidermal growth factor (EGF) to epidermal growth factor receptor (EGFR) activates tyrosine kinase activity and thereby triggers reactions that lead to cellular proliferation. Overexpression and/or overactivity of EGFR could result in uncontrolled cell division which may be a predisposition for cancer. Compounds that inhibit the overexpression and/or overactivity of EGFR are therefore candidates for treating cancer.
The relevant compound 4-ethyl-N- (4- ( (3-ethynylphenyl) amino) -7-methoxyquinazolin-6-yl) piperazine-1-carboxamide of the present invention has the effect of effectively inhibiting the overexpression and/or overactivity of EGFR. Thus, it is useful in treating diseases associated with overexpression and/or overactivity of EGFR, such as the treatment of cancer.
The phenomenon that a compound could exist in two or more crystal structures is known as polymorphism. Many compounds may exist as various polymorph crystals and also in a solid amorphous form. Until polymorphism of a compound is discovered, it is highly unpredictable (1) whether a particular compound will exhibit polymorphism, (2) how to prepare any such unknown polymorphs, and (3) how are the properties, such as stability, of any such unknown polymorphs. See, e.g., J. Bernstein “Polymorphism in Molecular Crystals” , Oxford University Press, (2002)
Since the properties of a solid material depend on the structure as well as on the nature of the compound itself, different solid forms of a compound can and often do exhibit different physical and chemical properties as well as different biopharmaceutical properties. Differences in chemical properties can be determined, analyzed and compared through a variety of analytical techniques. Those differences may ultimately be used to differentiate among different solid forms. Furthermore, differences in physical properties, such as solubility, and biopharmaceutical properties, such as bioavailability, are also of importance when describing the solid state of a pharmaceutical compound. Similarly, in the development of a pharmaceutical compound, e.g., 4-ethyl-N- (4- ( (3-ethynylphenyl) amino) -7-methoxyquinazolin-6-yl) piperazine-1-carboxamide, the new crystalline and amorphous forms of the pharmaceutical compound are also of importance.
The compound 4-ethyl-N- (4- ( (3-ethynylphenyl) amino) -7-methoxyquinazolin-6-yl) piperazine-1-carboxamide as well as the preparation thereof was described in patent CN101619043A.
pon extensive explorations and researchs, we have found that compound 4-ethyl-N- (4- ( (3-ethynylphenyl) amino) -7-methoxyquinazolin-6-yl) piperazine-1-carboxamide can be prepared into succinate salts, the chemical structure of its semisuccinate and monosuccinate being shown by Formula A. Studies have shown that, compared with its free base, the solubility of compound of Formula A is significantly increased, which is beneficial for improving the pharmacokinetic characteristics and in vivo bioavailability of the compound. We have also found that compound of Formula A can exist in different crystalline forms, and can form solvates with certain solvents. We have made extensive studies on the polymorphic forms of compound of Formula A and have finally prepared and determined the polymorphic forms which meet the requirement of pharmaceutical use. Based on these studies, the present invention provides the compound 4-ethyl-N- (4- ( (3-ethynylphenyl) amino) -7-methoxyquinazolin -6-yl) piperazine-1-carboxamide succinate and the various crystalline forms thereof, solvates and the crystalline forms thereof, which are designated as Form I, Form IV and Form V respectively.
The compound 4-ethyl-N- (4- ( (3-ethynylphenyl) amino) -7-methoxyquinazolin-6-yl) piperazine-1-carboxamide raw material used in the examples were prepared according to CN101619043A.
Example 1 Preparation of Form I of compound of Formula A
The 4-ethyl-N- (4- ( (3-ethynylphenyl) amino) -7-methoxyquinazolin-6-yl) piperazine-1-carboxamide (60g, 0.139mol) was dissolved in 150 times (volume/weight ratio) of tetrahydrofuran (9L) under refluxing. Then the obtained solution was cooled to 50℃, and succinic acid (65.8g, 0.557mol, 4 equivalents) was added in one portion. Then the obtained mixed solution was cooled naturally under stirring. The white precipitate was appeared at about 28℃. After further stirring for 18 hours, the white solid was collected by filtration, and dried at 40℃ under vacuum. A powder sample of 56.7g was obtained (yield 83%) .
1H NMR (400 MHz, cd3od) δ 8.52 (s, 1H) , 8.45 (s, 1H) , 7.93 –7.89 (m, 1H) , 7.77 –7.73 (m, 1H) , 7.35 (t, J = 7.9 Hz, 1H) , 7.24 (dd, J = 5.2, 3.8 Hz, 1H) , 7.19 (s, 1H) , 4.05 (s, 3H) , 3.69 –3.61 (m, 4H) , 3.49 (s, 1H) , 2.71 –2.64 (m, 4H) , 2.60 (q, J = 7.2 Hz, 2H) , 2.53 (s, 2H) , 1.18 (t, J = 7.2 Hz, 3H) .
The obtained powder sample is Form I of compound of Formula A, the X-ray powder diffractogram of which is shown in Figure 1. Peaks (2θ) chosen from the figure has the following values: 6.1, 7.9, 10.2, 11.6, 12.2, 13.6, 15.3, 15.9, 16.6, 17.8, 19.6, 20.4, 21.4, 21.7, 22.3, 23.5, 24.3, and 25.1 degrees, the measured 2θ values each having an error of about ± 0.2 degrees (2θ) , wherein characteristic peaks (2θ) are at 6.1, 7.9, 12.2, 15.3, 15.9, 16.6, and 20.4 degrees. DSC result is given in Figure 2, showing that the melting point range of Form I is about 193.4-197.3℃.
PATENT
PATENT
CN 108863951
PATENT
US 20100009958
PATENT
WO 2010002845

////////////Epitinib , PHASE 1, PHASE 2, Epitinib succinate, HMPL-813,  Huposuan yipitini, 1203902-67-3,

THELIATINIB


img str1

THELIATINIB

CAS: 1353644-70-8
Chemical Formula: C25H26N6O2

Molecular Weight: 442.523

HMPL-309; HMPL 309; HMPL309; Theliatinib.

  • Originator Hutchison MediPharma
  • Class Antineoplastics; Small molecules
  • Mechanism of Action Epidermal growth factor receptor antagonists

Highest Development Phases

  • Phase I Oesophageal cancer; Solid tumours

Most Recent Events

  • 29 Sep 2017 Efficacy and adverse events data from a phase I trial in Oesophageal cancer released by Hutchison Pharma
  • 13 Mar 2017 Phase-I clinical trials in Oesophageal cancer (First-line therapy) in China (PO) before March 2017 (Hutchison MediPharma pipeline, July 2017)
  • 02 Aug 2016 Hutchison MediPharma plans a phase Ib proof-of-concept trial for Oesophageal cancer, and Head and Neck cancer in China

Theliatinib, also known as HMPL-309, is a novel small molecule, epidermal growth factor receptor tyrosine kinase inhibitor with potential antineoplastic and anti-angiogenesis activities. In vitro studies suggest that Theliatinib is a potent EGFR kinase inhibitor with good kinase selectivity and in vivo data demonstrated broad spectrum anti-tumor activity via oral dosing in multiple xerographs such as A-431, Bcap-37 and Fadu.

PRODUCT PATENT

  • By Zhang, Weihan; Su, Wei-Guo; Yang, Haibin; Cui, Yumin; Ren, Yongxin; Yan, Xiaoqiang

WO2012000356 , covering quinazoline compounds as EGFR inhibitors

https://encrypted.google.com/patents/WO2012000356A1?cl=pt-PT&hl=en&output=html_text

Example 3:

(3aR,6aR)-N-(4-(3-ethynylphenylamino)-7-methoxyquinazolin-6-yl)-l-methyl-hexahydropyrrolo [3,4-b]pyrrole-5(lH)-carboxamide

[060] To a solution of Compound 3-a (40 g, 0.138 mol, prepared according to procedures disclosed in WO2010002845), pyridine (40 mL, 0.495 mol) and DMF (anhydrous, 22 mL) in anhydrous THF (500 mL), was added phenyl carbonochloridate 3-b (22 mL, 0.175 mol) dropwise at -10°C. The mixture was stirred at room temperature for 12 hours. The precipitates were filtered and then suspended in saturated NaHC03 solution (500 mL). The solid was filtered, washed with H20 and EtOAc, and dried in vacuum to give compound 3-c (46 g).

A mixture of compound 3-c (1 g, 2.44 mmol) and compound 3-d (369 mg, 2.92 mmol) in dioxane (30mL) was stirred at 70°C for 5 hours, and then cooled to the ambient temperature. The precipitates were filtered, washed with EtOAc, and dried in vacuum to give compound 3 (0.8 g). MS (m/e): 443.4 (M+l)+.

PATENT

https://patents.google.com/patent/WO2010002845A2/en

PATENT

US 9168253

https://patents.google.com/patent/US9168253

Example 3 (3aR,6aR)—N-(4-(3-ethynylphenylamino)-7-methoxyquinazolin-6-yl)-1-methyl-hexahydropyrrolo[3,4-b]pyrrole-5(1H)-carboxamide

Figure US09168253-20151027-C00004

To a solution of Compound 3-a (40 g, 0.138 mol, prepared according to procedures disclosed in WO2010002845), pyridine (40 mL, 0.495 mol) and DMF (anhydrous, 22 mL) in anhydrous THF (500 mL), was added phenyl carbonochloridate 3-b (22 mL, 0.175 mol) dropwise at −10° C. The mixture was stirred at room temperature for 12 hours. The precipitates were filtered and then suspended in saturated NaHCO3solution (500 mL). The solid was filtered, washed with H2O and EtOAc, and dried in vacuum to give compound 3-c (46 g). A mixture of compound 3-c (1 g, 2.44 mmol) and compound 3-d (369 mg, 2.92 mmol) in dioxane (30 mL) was stirred at 70° C. for 5 hours, and then cooled to the ambient temperature. The precipitates were filtered, washed with EtOAc, and dried in vacuum to give compound 3 (0.8 g). MS (m/e): 443.4 (M+1)+.

PATENT

THELIATINIB BY HUTCHISON

WO-2018099451

The present invention belongs to the field of pharmacy and provides a crystal form of a compound (3aR,6aR)-N-(4-(3-ethynylphenylamino)-7-methoxyquinazolin-6-yl)-1-methyl-hexahydropyrrolo[3,4-b]pyrrole-5(1H)-carboxamide, a pharmaceutical composition thereof, and a preparation method therefor and the use thereof.
(FR)La présente invention concerne le domaine de la pharmacie et fournit une forme cristalline d’un composé (3aR,6aR)-N-(4-(3-éthynylphénylamino)-7-méthoxyquinazolin-6-yl)-1-méthyl-hexahydropyrrolo[3,4-b]pyrrole-5(1H)-carboxamide, une composition pharmaceutique de celui-ci, et son procédé de préparation et son utilisation.

Novel crystalline forms of the compound presumed to be theliatinib , processes for their preparation and compositions comprising them are claimed. Also claimed is their use for treating lung cancer, colon cancer, breast cancer, ovary cancer, prostate cancer, stomach cancer, kidney cancer, liver cancer, brain cancer, esophageal cancer, bone cancer and leukemia.

Hutchison Medipharma is developing theliatinib, a small molecule EGFR tyrosine kinase and AKT cell proliferation pathway inhibitor, for treating cancer, including brain tumor, esophageal tumor and NSCLC; in September 2017, positive preliminary data were presented. Hutchison is also developing epitinib succinate , for treating cancer including glioblastoma.

Binding of epidermal growth factor (EGF) to epidermal growth factor receptor (EGFR) activates tyrosine kinase activity and triggers a response that leads to cell proliferation. Overexpression and/or overactivation of EGFR can lead to uncontrolled cell division, and uncontrolled cell division can be a cause of cancer. Therefore, compounds that inhibit the over-expression and/or over-activation of EGFR are candidates for treating tumors.
Relevant compounds of the present invention (3aR, 6aR)-N-(4-(3-ethynylphenylamino)-7-methoxyquinazolin-6-yl)-1-methyl-hexahydropyrrolo [3, 4-b]pyrrole-5(1H)-carboxamide, whose chemical structure is shown in Formula A, has the effect of effectively inhibiting overexpression and/or overactivation of EGFR. Therefore, it can be used for the treatment of diseases associated with overexpression and/or overactivation of EGFR, such as the treatment of cancer.
Before discovering the crystal form of a compound, it is difficult to predict (1) whether a particular compound exists in crystalline form; (2) how an unknown crystal form is made; (3) what the properties of the crystal form would be, such as stability , bioavailability and so on.
Since the properties of the solid depend on the structure and the nature of the compound itself, different solid forms of the compound often exhibit different physical and chemical properties. Differences in chemical properties can be measured, analyzed, and compared using a variety of analytical techniques that ultimately can be used to distinguish these different solid forms. Differences in physical properties, such as solubility and bioavailability, are also important in describing the solid form of the drug compound. Likewise, in the development of pharmaceutical compounds, such as compounds of Formula A, the new crystalline and amorphous forms of the pharmaceutical compounds are also important.

Patent CN102906086A discloses compound (3aR,6aR)-N-(4-(3-ethynylphenylamino)-7-methoxyquinazolin-6-yl)-1-methyl-hexahydropyrrolo[3 4-b]pyrrole-5(1H)-carboxamide and its preparation method.

Experimental part
 
The starting material of the compound of formula A used in the examples was prepared according to CN102906086A
PATENT

Example 3: (3aR, 6aR) -N- (4- (3- ethynyl-phenylamino) -7-methoxy-quinazolin-6-yl) -1-methyl-hexahydro-pyrrolo [3,4-b] pyrrol -5 (IH) – carboxamide

[0102]

Figure CN102906086AD00131

[0103] at -10 ° C, to (40g, 0. 138mol, was prepared in accordance with the operation disclosed in W02010002845) Compound 3-a, pyridine (40mL, O. 495mol) and DMF (anhydrous, 22mL) in dry solution (500 mL) in THF dropwise phenyl chloroformate 3-b (22mL, O. 175mol). The mixture was stirred at room temperature for 12h. The precipitate was filtered off, and then it was suspended in saturated NaHCO3 solution (500mL). The solid was filtered off, washed with H2O and EtOAc, and dried in vacuo to give compound 3_c (46g). Compound 3-c (lg, 2. 44mmol) and the compound 3_d (369mg, 2. 92mmol) in a mixture of two anger dioxane (30mL) was stirred at 70 ° C 5 h, then cooled to ambient temperature. The precipitate was filtered off, washed with EtOAc, and dried in vacuo to give compound 3 (O. 8g). MS (m / e): 443. 4 (M + 1) +.

Theliatinib (HMPL-309)

Theliatinib (HMPL-309) is a novel small molecule, epidermal growth factor receptor tyrosine kinase inhibitor with potential antineoplastic and anti-angiogenesis activities. Theliatinib is being developed as an oral formulation for the treatment of solid tumors like non-small cell lung cancer.

Theliatinib pre-clinical studies were conducted in China. In vitro studies suggest that Theliatinib is a potent EGFR kinase inhibitor with good kinase selectivity and in vivo data demonstrated broad spectrum anti-tumor activity via oral dosing in multiple xerographs such as A-431, Bcap-37 and Fadu. Non-clinical safety studies have indicated that Theliatinib is generally well tolerated in animals.

In November 2012, HMP initiated the first-in-human clinical trials of theliatinib.

Patent Citations (4)

Publication number Priority date Publication date  AssigneeTitle
CN101094840A *2004-12-292007-12-26韩美药品株式会社Quinazoline derivatives for inhibiting cancer cell growth and method for the preparation thereof
CN101619043A *2008-06-302010-01-06和记黄埔医药(上海)有限公司Quinazoline derivant and medical application thereof
WO2010002845A2 *2008-06-302010-01-07Hutchison Medipharma Enterprises LimitedQuinazoline derivatives
CN102311438A *2010-06-302012-01-11和记黄埔医药(上海)有限公司Quinazoline compound
CN106117182A *2016-06-202016-11-16中国药科大学Quinazoline-N-phenethyl tetrahydroisoquinoline compound and preparation method and application thereof

REFERENCES

1: Ren Y, Zheng J, Fan S, Wang L, Cheng M, Shi D, Zhang W, Tang R, Yu Y, Jiao L,
Ni J, Yang H, Cai H, Yin F, Chen Y, Zhou F, Zhang W, Qing W, Su W. Anti-tumor
efficacy of theliatinib in esophageal cancer patient-derived xenografts models
with epidermal growth factor receptor (EGFR) overexpression and gene
amplification. Oncotarget. 2017 Apr 19. doi: 10.18632/oncotarget.17243. [Epub
ahead of print] PubMed PMID: 28472779.

//////THELIATINIB, HMPL-309, HMPL 309, HMPL309, Phase I,  Oesophageal cancer,  Solid tumours

 O=C(N1C[C@]2([H])N(C)CC[C@]2([H])C1)NC3=CC4=C(NC5=CC=CC(C#C)=C5)N=CN=C4C=C3OC

YINLITINIB


Image result for china flag animated gif

Figure CN104119350BD00752

REGOTSLWVKSZRG-GYQWKJCYSA-N.png

SCHEMBL16219901.png

Figure US09556191-20170131-C00087

str1

str1

YINLITINIB

error EMAIL ME amcrasto@gmail.com

(E)-4-[(4aR,7aS)-2,3,4a,5,7,7a-hexahydro-[1,4]dioxino[2,3-c]pyrrol-6-yl]-N-[4-(3-chloro-4-fluoroanilino)-7-methoxyquinazolin-6-yl]but-2-enamide

(E)-N-(4-((3-Chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)-4-((4aR,7aS)-tetrahydro-2H-[1,4]dioxin[2,3-c]pyrrol-6(3H)-yl)but-2-enamide

CAS 1637253-79-2
2-Butenamide, N-[4-[(3-chloro-4-fluorophenyl)amino]-7-methoxy-6-quinazolinyl]-4-[(4aR,7aS)-hexahydro-6H-1,4-dioxino[2,3-c]pyrrol-6-yl]-, (2E)-rel
C25 H25 Cl F N5 O4, 513.95

DNT-04110 ; yinlitinib maleate , Guangdong Hec Pharmaceutical

Use for treating proliferative diseases, atherosclerosis and pulmonary fibrosis

Phase I CHINA

NOTE AND USE YOUR JUDGMENT ON DRUG SUBSTANCE, EMAIL ME amcrasto@gmail.com

str1

REGOTSLWVKSZRG-ICCQKZDASA-N.png

Molecular Formula: C25H25ClFN5O4
Molecular Weight: 516.973 g/mol

Yinlitinib methoxy-d3

CAS 1637254-71-7

C25 H22 Cl D3 F N5 O4
2-Butenamide, N-[4-[(3-chloro-4-fluorophenyl)amino]-7-(methoxy-d3)-6-quinazolinyl]-4-[(4aR,7aS)-hexahydro-6H-1,4-dioxino[2,3-c]pyrrol-6-yl]-, (2E)-rel
CN 104119350
YINLITINIB MALEATE methoxy-d3
CAS ?
EMAIL ME amcrasto@gmail.com

MAY BE DRUG COMD

Patent ID

Patent Title

Submitted Date

Granted Date

US9556191 AMINOQUINAZOLINE DERIVATIVES AND THEIR SALTS AND METHODS OF USE THEREOF
2014-04-28
2016-02-11

In March 2015, an IND was filed in China ; in February 2016, approval to conduct a clinical trial was obtained

Guangdong Hec Pharmaceutical is investigating an oral capsule formulation of yinlitinib maleate (DNT-04110), an irreversible pan-ErbB inhibitor, for the potential treatment of solid tumors . In March 2015, an IND was filed in China ; in February 2016, approval to conduct a clinical trial was obtained . In December 2016, a phase I trial was planned in China

Protein kinases (PKs) represent a large family of proteins, which play an important role in the regulation of a wide variety of cellular processes and maintaining control over cellular functions. There are two classes of protein kinases (PKs): the protein tyrosine kinases (PTKs) and the serine-threonine kinases (STKs). The protein tyrosine kinase is an enzyme that catalytically transfers the phosphate group from ATP to the tyrosine residue located at the protein substrate, and has a play in the normal cell growth. Many growth factor receptor proteins operate via the tyrosine kinase, and influence the conduction of signal passage and further regulate the cell growth by this process. However, in some circumstances, these receptors become abnormal due to either mutation or overexpression, which cause the uncontrolled cell multiplication, cause the tumor growth, and finally initiate the well-known disease, i.e., cancer. The growth factor receptor protein tyrosine kinase inhibitor, via the inhibition of the above phosphorylation process, may treat cancers and other diseases characterized by the uncontrolled or abnormal cell growth.

Epidermal growth factor receptor (EGFR), a kind of receptor tyrosine kinases, is a multifunction glycoprotein that is widely distributed on the cell membranes of the tissues of the human body, and is an oncogene analog of avian erythroblastic leukemia viral (v-erb-b). Human EGFR/HER1/ErbB-1 and HER2 (human epidermal growth factor receptor-2)/ErbB-2/Teu/p185, HER3/ErbB-3, HER4/ErbB-4 and the like are grouped into the HER/ErbB family, and belong to protein tyrosine kinases (PTKs). They are single polypeptide chains, and each is encoded respectively by genes located on different chromosomes. EGFR and the like are expressed in the epithelia-derived tumors such as squamous cell carcinoma of head and neck, mammary cancer, rectal cancer, ovarian cancer, prostate carcinoma, non-small cell lung cancer, and the like, which are associated with cell proliferation, metastasis, and the like. Pan-HER tyrosine kinase inhibitor, via the competitive binding to the kinase catalytic sites in the intracellular region against ATP, blocks the autophosphorylation of intramolecular tyrosine, blocks the tyrosine kinase activation, inhibits HER-2 family activation, and therefore inhibits cell cycle progression, accelerates cell apoptosis, and exerts the therapeutic action.

EGFR, after binding to the ligand, forms a dimer with a subgroup of HER family, and then combines with ATP to activate the tyrosine kinase activity of the EGFR itself. Therefore, the autophosphorylation occurs in several tyrosine sites of the intracellular kinase region. Pan-HER tyrosine kinase inhibitor, via simultaneity acting on EGFR and HER2/4, inhibits the activation of HER family, and plays a good role in the tumor growth inhibition.

It is indicated in the study that Pan-HER tyrosine kinase irreversible inhibitor has an inhibition effect on HER2/4, besides it effectively inhibits EGFR. The pharmaceutical drugs of this kind, having an irreversible inhibition to both of HER/ErbB families, not only increase the drug activity, but also reduce the drug resistance, and have a substantial inhibition effect on H1975 cell lines which are resistant to erlotinib.

The pharmaceutical drugs that are now commercially available include selective EGFR tyrosine kinase inhibitor gefitinb (IRESSA®, ZD1839), erlotinib (TARCEVA®, OSI-774), double EGFR/HER2 inhibitor Lapatinib (TYKERB®, GW572016), and the like. These three drugs are all reversible EGF receptor tyrosine phosphorylation kinase inhibitor. It has been found in the study that they have good therapeutic response to some tumors initially. However, several months after the treatment, the disease progression appears again and therefore a natural or secondary drug resistance forms. For example, about half of the patients administered with gefitinib or erlotinib develop resistance to gefitinib or erlotinib, which can not lead to the desired therapeutic effect. And it has been indicated by study that the development of drug resistance to selective EGFR tyrosine kinase inhibitor relates to mutations in EGFR.

The mutations of EGFR gene mostly located in the tyrosing kinase coding domain (TK, exons 18-21) are mainly deletion mutation in exon 19 and point mutation in exon 21, both of which are drug-sensitive, and few are point mutation in exon 18 and insertion mutation in exon 20. T790M mutation recognized as one of the mechanism of drug resistance is a point mutation in exon 20 of EGFR. The presence of a second-site EGFR mutation leads to the substitution of methionine for threonine at position 790 (T790M) and changes in the structure of EGFR, which hinder the binding of EGFR inhibitors to EGFR or greatly increase the affinity between EGFR and ATP, so that ATP affinity back to the level of wild-type EGFR, thus resulting in drug resistance. Further studies shows that the pre-treatment tumor samples with mutations of EGFR contain T790M mutation, which indicates that T790M mutation is not just associated with drug resistance and it may have the carcinogenic potential itself.

Irreversible inhibitor can bind to EGFR tyrosine kinase by covalent bond. Thus, the drugs can act on the entire link of epidermal growth factor signal transduction pathway, and improve efficiency of drug blocking. Many clinical studies show that some irreversible inhibitors in current development can against T790M mutation, and overcome the drug resistance caused by T790M. Meanwhile, listed drug Afatinib (BIBW 2992) and some irreversible inhibitors in clinical development (e.g., Dacomitinib, PF00299804, etc.), can inhibit multiple members of EGFR receptor family, especially to the role of EGFR and HER-2, possibly by blocking collaborative signal pathway activated by homodimer and heterodimer to enhance inhibitory effect (Oncologist, 2009, 14 (11): 1116-1130).

Upon developing the drug having an excellent antineoplastic effect, being able to reduce the drug resistance and having a good tolerance, the present inventors discover a quinazoline derivatives as tyrosine kinase inhibitors having a Pan-HER irreversible inhibition function.

PATENT

https://patents.google.com/patent/US9556191

EXAMPLES Example 1 (E)-N-(4-((3-Chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)-4-((4aR,7aS)-tetrahydro-2H-[1,4]dioxin[2,3-c]pyrrol-6(3H)-yl)but-2-enamide

Figure US09556191-20170131-C00087

Step 1) N-(3-chloro-4-fluorophenyl)-7-methoxy-6-nitroquinazolin-4-amine

A solution of N-(3-chloro-4-fluorophenyl)-7-fluoro-6-nitroquinazolin-4-amine (10.00 g, 29.8 mmol) and sodium methanolate (2.80 g, 51.8 mmol) in methanol (150 mL) was heated to 70° C. and stirred for 4.0 hours. The reaction mixture was then cooled to 25° C. The resulting mixture was poured into ice water (500 mL), and a yellow solid precipitated out. The mixture was filtered and the filter cake was dried under vacuum to give the title compound as a yellow solid (9.00 g, 86.9%). The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) m/z: 349.1 [M+1]+; and 1H NMR (400 MHz, DMSO-d6) δ: 11.60 (s, 1H), 9.55 (s, 1H), 8.08 (dd, J1=6.6 Hz, J2=2.4 Hz, 1H), 7.90 (s, 1H), 7.76-7.71 (m, 1H), 7.58 (s, 1H), 7.55 (t, J=9.4 Hz, 1H), 4.10 (s, 3H).

Step 2) N4-(3-chloro-4-fluorophenyl)-7-methoxyquinazoline-4,6-diamine

To a solution of N-(3-chloro-4-fluorophenyl)-7-methoxy-6-nitroquinazolin-4-amine (9.00 g, 25.9 mmol) in ethanol (100 mL) were added iron powder (14.50 g, 259.0 mmol) and concentrated hydrochloric acid (3.0 mL) at 25° C. The reaction mixture was heated to 90° C. and stirred for 3.0 hours. Then heating was stopped, and the resulting mixture was adjusted to pH 11 with aqueous sodium hydroxide solution (1 M) while the mixture was still at a temperature of about 60±10° C. The pH-adjusted resulting mixture was then immediately filtered hot to remove iron mud. The filtrate was concentrated in vacuo. The residue was triturated with ethanol (50 mL) and filtered. The filter cake was dried under vacuum to give the title compound as a yellow solid (6.00 g, 73.0%). The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) m/z: 319.1 [M+1]+.

Step 3) (E)-4-bromobut-2-enoyl chloride

To a solution of 4-bromocrotonic acid (2.47 g, 15.0 mmol) and DMF (0.05 mL) in DCM (60 mL) was added oxalyl chloride (4.19 g, 33.0 mmol) dropwise at 0° C. The reaction mixture was stirred at 0° C. for 3.0 hours, and then concentrated in vacuo. The residue was stored in a refrigerator for the next step.

Step 4) (E)-4-bromo-N-(4-((3-chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)but-2-enamide

To a solution of N4-(3-chloro-4-fluorophenyl)-7-methoxyquinazoline-4,6-diamine (4.00 g, 12.6 mmol) and TEA (6.0 mL, 37.8 mmol) in anhydrous tetrahydrofuran (80 mL) was added (E)-4-bromobut-2-enoyl chloride (2.74 g, 15.1 mmol) slowly at 0° C. The reaction mixture was then heated to 25° C. and stirred for 2.0 hours. The resulting mixture was poured into water (100 mL) and extracted with DCM (50 mL×3). The combined organic phases were dried over anhydrous Na2SO4, filtered and concentrated in vacuo. The residue was triturated with DCM (30 mL) and filtered. The filter cake was dried under vacuum to give the title compound as a brownish yellow solid (2.00 g, 34.5%). The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) m/z: 465.1 [M+1]+.

Step 5) (E)-N-(4-((3-chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)-4-((4aR,7aS)-tetrahydro-2H-[1,4]dioxin[2,3-c]pyrrol-6(3H)-yl)but-2-enamide

To a solution of (E)-4-bromo-N-(4-((3-chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)but-2-enamide (0.50 g, 1.1 mmol) and diisopropylethylamine (0.6 mL, 3.2 mmol) in N,N-dimethylacetamide (10 mL) was added (4aR,7aS)-hexahydro-2H-[1,4]dioxino[2,3-c]pyrrole (0.42 g, 3.2 mmol) at 25° C., and the reaction mixture was then stirred at 25° C. for 5.0 hours. The resulting mixture was poured into water (70 mL) and extracted with DCM (40 mL×3). The combined organic phases were dried over anhydrous Na2SO4, filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography (CH2Cl2/MeOH (v/v)=20/1) to give the title compound as a brownish yellow solid (0.30 g, 54.5%). The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) m/z: 514.1 [M+1]+; and 1H NMR (400 MHz, DMSO-d6) δ: 10.60 (s, 1H), 9.35 (s, 1H), 8.90 (s, 1H), 8.08 (dd, J1=6.6 Hz, J2=2.4 Hz, 1H), 7.76-7.70 (m, 1H), 7.58 (s, 1H), 7.55 (t, J=8.4 Hz, 1H), 6.75-6.65 (m, 1H), 6.63 (d, J=16.2 Hz, 1H), 4.10 (s, 3H), 3.78 (t, J=6.2 Hz, 4H), 3.26 (t, J=4.4 Hz, 2H), 3.20 (dd, J1=7.8 Hz, J2=2.6 Hz, 2H), 2.20 (d, J=4.6 Hz, 4H).

PATENT

WO2017067447

DIFFERENT COMPD

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2017067447

claiming novel crystalline polymorphic forms of a similar EGFR, useful for treating cancer. One of these two compounds is probably yinlitinib maleate , an irreversible pan-ErbB inhibitor, being developed by Guangdong Hec Pharmaceutical , another subsidiary of HEC Pharm , for treating solid tumors; in April 2017, yinlitinib maleate was reported to be in preclinical development

Chinese patent CN 103102344 A (publication number) have disclosed the structure of 4- [ (3-chloro-4-fluorophenyl) amino] -7-methoxy-6- [3- [ (1R, 6S) -2, 5-dioxa-8-azabicyclo [4.3.0] nonan-8-yl] propoxy] quinazoline in example 6 of specification, page 57, and the structure is shown as Formula (II) . The compound of Formula (II) has a high inhibition activity against EGFR, and can be used for treating proliferative disorders.

PATENT

https://patents.google.com/patent/WO2014177038A1/en

InventorYingjun ZhangBing LiuJinlei LiuJiancun ZhangChangchun Zheng

Original AssigneeSunshine Lake Pharma Co., Ltd.

PATENT

CN104119350B

Inventor张英俊刘兵刘金雷张健存郑常春 Original Assignee广东东阳光药业有限公司

https://patents.google.com/patent/CN104119350B/en

Figure CN104119350BD00731

Figure CN104119350BD00741

Figure CN104119350BD00742

Figure CN104119350BD00751

Example 1

[0442] (E) -N- (4- ((3- chloro-4-fluorophenyl) amino) -7-methoxy-quinazolin-6-yl) -4- ((4aR, 7aS) – tetrahydro _2H_ [1,4] dioxin burning and [2,3_c] R ratio slightly -6 (3H) – yl) butyric acid amide dilute _2_

[0443]

Figure CN104119350BD00752

[0444] Synthesis Step Shu: N- (3- chloro-4-fluorophenyl) -7-methoxy-6-nitro quinazolin-4-amine

[0445] The N- (3- chloro-4-fluorophenyl) -7-fluoro-6-nitro-quinazolin-4-amine (10 • 0g, 29 • 8mmol) and sodium methoxide (2.80g, 51.8 mmol) was dissolved in methanol (150 mL), the reaction was warmed to 70 ° C 4. Oh. Was cooled to 25 ° C, the reaction mixture was poured into ice-water (500 mL), the precipitated yellow solid was filtered, the filter cake was dried in vacuo to give a yellow solid 9.00g, yield 86.9%.

[0446] MS (. ESI, pos ion) m / z: 349.1 [M + l] +;

[0447] bandit R (400MHz, DMS〇-d6) S: 11 • 60 (s, 1H), 9 • 55 (s, 1H), 8 • 08 (dd, Ji = 6 • 6Hz, J2 = 2.4Hz, lH), 7.90 (s, lH), 7.76-7.71 (m, lH), 7.58 (s, lH), 7.55 (t, J = 9.4Hz, 1H), 4.10 (s, 3H) square

[0448] Synthesis Step 2: n4- (3- chloro-4-fluorophenyl) -7-methoxy-quinazolin-4,6-diamine

[0449] The N- (3- chloro-4-fluorophenyl) -7-methoxy-6-nitro quinazolin-4-amine (9.00g, 25.9mmol) was dissolved in ethanol (100 mL), the was added reduced iron powder (14.5g, 259. Ommol) and concentrated hydrochloric acid (3mL) at 25 ° C, the reaction was warmed to 90 ° C 3.Oh. With 1M aqueous sodium hydroxide solution adjusted to pH 11, filtered hot to remove iron sludge, the mother liquor was concentrated and the residue was purified slurried with ethanol (50 mL), filtered, and the filter cake was dried in vacuo to a yellow solid 6.00g, yield 73.0%.

[0450] MS (ESI, pos ion.) M / z: 319.1 [M + l] + square

[0451] Synthesis Step 3: (E) -4- bromo-but-2-enoyl chloride

The [0452] square ° C Oxalyl chloride (4.19g, 33. Ommol) was slowly added dropwise to a solution containing 4-bromo crotonic acid (2.47g, 15. Ommol) and DMF (0.05mL) in dichloromethane (60 mL) solution of in 3. Oh reaction was stirred at 0 ° C. The reaction solution was concentrated, the residue was stored in a refrigerator until use.

[0453] Synthesis Step 4: (E) -4- bromo–N- (4- ((3- chloro-4-fluorophenyl) amino) -7-methoxy-quinazolin-6-yl) butan – 2_ dilute amide

[0454] The N4- (3- chloro-4-fluorophenyl) -7-methoxy-quinazolin-4,6-diamine (4.00g, 12.6mmol) and triethylamine (6.0mL, 37.8mmol ) was dissolved in anhydrous tetrahydro-furan in Misaki (80 mL), cooled to 0 ° C, was slowly added (E) -4- bromo-2-dilute acid chloride (2.748,15.12 dirty 〇1), warmed to 25 ° ( : 2.011 reaction the reaction mixture was poured into water (1001 ^) and extracted with methylene chloride (50mL X 3), the organic phases were combined, dried over anhydrous sodium sulfate filtered, concentrated and the residue with dichloromethane (30 mL). beating purified filtered, the filter cake was dried in vacuo 2.00g tan solid, yield 34.5%.

[0455] MS (ESI, pos ion.) M / z: 465.1 [M + l] + square

[0456] Synthesis Step 5: (E) -N- (4 _ ((3- chloro-4-fluorophenyl) amino) -7_ methoxy-quinazolin-6-yl) _4_ ((4aR, 7aS) – tetrahydro -2H- [1,4] dioxin burning and [2,3_c] P ratio slightly -6 (3H) – yl) butyric acid amide dilute _2_

[0457] The (E) -4- bromo–N- (4- ((3- chloro-4-fluorophenyl) amino) -7-methoxy-quinazolin-6-yl) but-2-ene amide (0.50g, 1.08mmol) and diisopropylethylamine (0.6mL, 3.24mmol) was dissolved in dimethylacetamide (10 mL) was added at 25 ° C (4aR, 7aS) – hexahydro–2H- [1,4] dioxane, and [2,3-c] pyrrole (0 • 42g, 3 • 24mmol) 5. Oh reaction was continued under stirring, 25 ° C. The reaction mixture was poured into water (70 mL) and extracted with methylene chloride (40mL X 3), the organic phases were combined, dried over anhydrous sodium sulfate. Filtered, concentrated and the residue purified by column chromatography (CH2Cl2 / MeOH (V / v) = 20/1), to give 0.30g tan solid, yield 54.5%.

[0458] MS (. ESI, pos ion) m / z: 514.1 [M + l] +;

[0459] XH NMR (400MHz, DMS0-d6) 8: 10.60 (s, lH), 9.35 (s, lH), 8.90 (s, lH), 8.08 (dd, Ji = 6.6Hz, J2 = 2.4Hz, 1H ), 7.76-7.70 (m, 1H), 7.58 (s, 1H), 7.55 (t, J = 8.4Hz, 1H), 6.75-6.65 (m, lH), 6.63 (d, J = 16.2Hz, lH) , 4.10 (s, 3H), 3.78 (t, J = 6.2Hz, 4H), 3.26 (t, J = 4.4Hz, 2H), 3.20 (dd, Ji = 7.8Hz, J2 = 2.6Hz, 2H), 2.20 (d, J = 4.6Hz, 4H)

PATENT

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018095353&recNum=1&maxRec=&office=&prevFilter=&sortOption=&queryString=&tab=FullText

Patent applications WO 2014/177038 and CN 104119350 discloses aminoquinazoline tyrosine kinase inhibitors with irreversible inhibition effect on Pan-HER, wherein the compound (E) -N- (4- (3-chloro-4-fluorophenyl) amino) -7- (methyloxy-D3) -quinazolin-6-yl) -4- ( (4aR, 7aS) -tetra hydro-2H- [l, 4] dioxino [2, 3-c] pyrrole-6 (3H) -yl) butyl-2-enamide (i.e. compound (I) ) has an excellent antitumor effect. It can reduce the generation of drug resistance and also have good tolerance.

[0011]
EXPERIMENTAL PART
[0184]
The specific synthetic method for compound (I) (E) -N- (4- (3-chloro-4-fluorophenyl) amino) -7- (methyloxy-D3) -quinazolin-6-yl) -4- ( (4aR, 7aS) -tetra hydro-2H- [l, 4] dioxino [2, 3-c] pyrrole-6 (3H) -yl) butyl-2-enamide refers to Example 20 of Patent CN 104119350 A (Application Publication No. ) .
[0185]
EXAMPLES
[0186]
Example 1
[0187]
(E) -N- (4- (3-chloro-4-fluorophenyl) amino) -7- (methyloxy-D3) -quinazolin-6-yl) -4- ( (4aR, 7aS) -t etrahydro-2H- [l, 4] dioxino [2, 3-c] pyrrole-6 (3H) -yl) butyl-2-enamide dimesylate having crystalline form A
[0188]
1. Preparation of dimesylatesulfonate having crystalline form A
[0189]
(E) -N- (4- (3-Chloro-4-fluorophenyl) amino) -7- (methyloxy-D3) -quinazolin-6-yl) -4- ( (4a R, 7aS) -tetrahydro-2H- [l, 4] dioxino [2, 3-c] pyrrole-6 (3H) -yl) butyl-2-enamide (1.032 g, 2.0 mmol) was added to acetone (80 mL) , the mixture was heated to reflux for 30 minutes and filtered. The filtrate was refluxed, and mesylate (0.481 g, 5.0 mmol) was added. The resulting mixture was refluxed overnight. A part of solvent was evaporated under reduced pressure, then the temperature of the residue was gradually cooled to room temperature and maintained at this temperature overnight. The resulting mixture was filtered with suction. The filter cake was washed with acetone and dried at 50 ℃ for 8 hours in vacuo to give a white solid (1.15 g, 81.3%) .
PATENT

Example 6

[00221] N-(3-chloro-4-fluorophenyl)-7-methoxy-6-(3-(tetrahvdro-2H-n,41dioxinor2,3-clpyrrol-6(3H -vn propoxy quinazolin-4-amine

Figure imgf000074_0001

[00222] Step Ubenzyl 3,4-dihvdroxypyrrolidine-l -carboxylate

Figure imgf000074_0002

To a solution of N- carbobenzoxy-3-pyrroline ( 1.00 g, 4.92 mmol, 1.0 eq) in acetone (20 mL) was added NMO ( 1.0 g, 7.38 mmol, 1.5 eq) followed by Os04 (cat. 10 mg in 1 mL ‘PrOH). The mixture was stirred for 3 h. To this, saturated NaHS03aqueous solution (5 mL) was added, and the mixture was stirred for another 0.5 h. The organic phase was separated from the mixture, and the water phase was extracted with EtOAc (20 mL x 3). The combined organic phases were dried over anhydrous Na2S04 and filtered. The filtrate was concentrated in vacuo and the residue was purified by a silica gel column chromatography (EtOAc) to give the compound as colorless oil (1.16 g, 100 %).

[00223] Step 2) benzyl tetrahvdro-2H-n.41dioxino[2.3-c1pyrrole-6(3H)- carboxylate

Figure imgf000074_0003

A mixture of NaOH aqueous solution (35 w/w %, 21 mL, aq.), C1CH2CH2C1 (21 mL), benzyl 3,4-dihydroxypyrrolidine-l -carboxylate (1.16 g, 4.9 mmol, 1.0 eq) and TBAB (0.31 g, 0.98 mmol, 0.2 eq) was heated at 55 °C for 48h in a round-bottom flask. The reaction mixture was cooled to room temperature and poured into water (50 mL), extracted with EtOAc (50 mL). The organic phase was separated from the mixture, and the water phase was extracted with EtOAc (20 mLx3). The combined organic phases were dried over anhydrous Na2S04 and filtered. The filtrate was concentrated in vacuo and the residue was purified with a silica gel column chromatography ( 1 : 1 (v/v) PE/EtOAc) to give the product as colorless oil (0.50 g, 39 %).

[00224] Step 3) hexahvdro-2H-n.41dioxinor2.3-clpyrrole

Figure imgf000074_0004

To a solution of benzyl tetrahydro-2H-[l ,4]dioxino[2,3-c] pyrrole-6(3H)-carboxylate (0.46 g, 1 .94 mmol) in MeOH (20 mL) was added two drops of HC02H followed by 20 % Pd(OH)2 (50mg). The reaction mixture was stirred under H2 for 4h at rt and was filtered. The filtrate was concentrated in vacuo to give the crude product, which was used for the next step without further purification.

[00225] Step 4) N-(3-chloro-4-fluorophenyl)-7-methoxy-6-(3-(tetrahvdro-2H-n,41 dioxinor2,3-clpyrrol-6(3H) -yl)propoxy)quinazolin-4-amine

Figure imgf000075_0001

A mixture of hexahydro-2H-[ l ,4]dioxino[2,3-c]pyrrole (1.0 eq), N-(3-chloro-4-fluorophenyI)-6- (3-chloropropoxy)-7-methoxyquinazolin-4-amine (710 mg, 1.8 mmol, 0.95 eq), 2C03 (524 mg, 3.8 mmol, 2.0 eq) and KI (16 mg, 0.095 mmol, 0.05 eq) in DMF (12 mL) was heated at 60 °C for 3 h and cooled to room temperature. The reaction mixture was quenched with water (10 mL) and diluted with EtOAc (20 mL). The organic phase was separated from the mixture, and the water phase was extracted with EtOAc (20 mLx3). The combined organic phases were dried over anhydrous Na2S04 and concentrated in vacuo. The residue was purified by a silica gel column chromatography (20: 1 (v/v) CH2Cl2/CH3OH) to give the crude product, which was recrystallized from CH2C12/PE to afford the title compound as a grayish-white solid (230 mg, 25.00 %), HPLC:99.1 1 % . The compound was characterized by the following spectroscopic data: MS (ESI, pos. ion) m/z: 489.9 (M+1 );’H NMR (400 MHz, CDC13) δ: 2.09 (2H, m), 2.74 (4H, m), 2.99 (2H, dd, = 3.3, 10.4 Hz), 3.56 (2H, m), 3.80 (2H, m), 3.99 (3H, s), 4.12 (2H, t, J = 3.5 Hz), 4.22 (2H, t, J = 6.8 Hz), 7.14 (1 H, t, J = 8.8 Hz), 7.23 (1 H, s), 7.29 ( 1 H, d, J = 15.8 Hz), 7.60 (1 H, m), 7.89 (1 H, dd, J = 2.5, 6.5 Hz), 8.63 (1 H, s) ppm.

PATENT

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2014177038&recNum=1&maxRec=&office=&prevFilter=&sortOption=&queryString=&tab=PCTDescription

Example 1

[00192] (^-N 4 (3-Chloro -fluorophenyl)amino)-7-methoxyquinazolin-6-yl)-4 (4aR,7a5)-tetrahydro-2H-[ l,4]dioxino[2,3-c]pyrrol-6(3H)

[00193] Step 1) N-(3-chloro-4-fluorophenyl)-7-methoxy-6-nitroquinazolin-4-amine

A solution of N-(3-chloro-4-fluorophenyl)-7-fluoro-6-nitroquinazolin-4-amine (10.00 g, 29.8 mmol) and sodium methanolate (2.80 g, 51.8 mmol) in methanol (150 mL) was heated to 70 °C and stirred for 4.0 hours. The reaction mixture was then cooled to 25 °C. The resulting mixture was poured into ice water (500 mL), and a yellow solid precipitated out. The mixture was filtered and the filter cake was dried under vacuum to give the title compound as a yellow solid (9.00 g, 86.9%). The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) m/z : 349.1 [M+l]+; and ‘H NMR (400 MHz, DMSO-<&) δ: 11.60 (s, 1H), 9.55 (s, 1H), 8.08 (dd, Jx = 6.6 Hz, J2 = 2.4 Hz, 1H), 7.90 (s, 1H), 7.76-7.71 (m, 1H), 7.58 (s, 1H), 7.55 (t, J = 9.4 Hz, lH ), 4.10 (s, 3H).

[00194] Step 2) N4-(3-chloro-4-fluorophenyl)-7-methoxyquinazoline-4,6-diamine

To a solution of N-(3-chloro-4-fluorophenyl)-7-methoxy-6-nitroquinazolin-4-amine (9.00 g, 25.9 mmol) in ethanol (100 mL) were added iron powder (14.50 g, 259.0 mmol) and concentrated hydrochloric acid (3.0 mL) at 25 °C. The reaction mixture was heated to 90 °C and stirred for 3.0 hours. Then heating was stopped, and the resulting mixture was adjusted to pH 11 with aqueous sodium hydroxide solution (1 M) while the mixture was still at a temperature of about 60 ± 10 °C. The pH-adjusted resulting mixture was then immediately filtered hot to remove iron mud. The filtrate was concentrated in vacuo. The residue was triturated with ethanol (50 mL) and filtered. The filter cake was dried under vacuum to give the title compound as a yellow solid (6.00 g, 73.0%). The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) m/z : 319.1 [M+l]+.

[00195] Step 3) (£)-4-bromobut-2-enoyl chloride

To a solution of 4-bromocrotonic acid (2.47 g, 15.0 mmol) and DMF (0.05 mL) in DCM (60 mL) was added oxalyl chloride (4.19 g, 33.0 mmol) dropwise at 0 °C. The reaction mixture was stirred at 0 °C for 3.0 hours, and then concentrated in vacuo. The residue was stored in a refrigerator for the next step.

[00196] Step 4) (ii)-4-bromo-N-(4-((3-chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)but-2-enamide

To a solution of N4-(3-chloro-4-fluorophenyl)-7-methoxyquinazoline-4,6-diamine (4.00 g, 12.6 mmol) and TEA (6.0 mL, 37.8 mmol) in anhydrous tetrahydrofuran (80 mL) was added (E)-4-bromobut-2-enoyl chloride (2.74 g, 15.1 mmol) slowly at 0 °C. The reaction mixture was then heated to 25 °C and stirred for 2.0 hours. The resulting mixture was poured into water (100 mL) and extracted with DCM (50 mL x 3). The combined organic phases were dried over anhydrous NaaSOzi, filtered and concentrated in vacuo. The residue was triturated with DCM (30 mL) and filtered. The filter cake was dried under vacuum to give the title compound as a brownish yellow solid (2.00 g, 34.5%). The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) m/z : 465.1 [M+l]+.

[00197] Step 5) (^-N 4 (3-chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-yl) (4aR,7aS)-tetrahydro-2H-[l,4]dioxino[2,3-c]pyrrol-6(3H)-yl)but-2-enamide

To a solution of (iT)-4-bromo-N-(4-((3-chloro-4-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)but-2-enamide (0.50 g, 1.1 mmol) and diisopropylethylamine (0.6 mL, 3.2 mmol) in N^V-dimethylacetamide (10 mL) was added (4aR,7aS)-hexahydro-2H-[l,4]dioxino[2,3-c]pyrrole (0.42 g, 3.2 mmol) at 25 °C, and the reaction mixture was then stirred at 25 °C for 5.0 hours. The resulting mixture was poured into water (70 mL) and extracted with DCM (40 mL x 3). The combined organic phases were dried over anhydrous Na2S04, filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography (CH2Cl2 MeOH (v/v) = 20/1) to give the title compound as a brownish yellow solid (0.30 g, 54.5%). The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) m/z : 514.1 [M+l]+; and lH NMR (400 MHz, DMSO-t/tf) δ: 10.60 (s, 1H), 9.35 (s, 1H) , 8.90 (s, 1H), 8.08 (dd, Jx = 6.6 Hz, J2 = 2.4 Hz, 1H), 7.76-7.70 (m, 1H), 7.58 (s, 1H), 7.55 (t, J = 8.4 Hz, 1H ), 6.75-6.65 (m, 1H), 6.63(d, J = 16.2 Hz, 1H), 4.10 (s, 3H), 3.78 (t, J= 6.2 Hz, 4H), 3.26 (t, J = 4.4 Hz, 2H), 3.20 (dd, Jx = 7.8 Hz, J2 = 2.6 Hz, 2H), 2.20 (d, J= 4.6 Hz, 4H).

////////////DNT-04110,  yinlitinib maleate , Guangdong Hec Pharmaceutical, PHASE 1, CHINA, yinlitinib

Fc1ccc(cc1Cl)Nc2ncnc3cc(OC)c(cc23)NC(=O)/C=C/CN4C[C@H]5OCCO[C@H]5C4

Fc1ccc(cc1Cl)Nc2ncnc3cc(OC([2H])([2H])[2H])c(cc23)NC(=O)/C=C/CN4C[C@H]5OCCO[C@H]5C4

SIMILAR COMPDS

1
Canertinib [INN:BAN]
267243-28-7
2D chemical structure of 267243-28-7
MW: 485.9445  –
2
Canertinib dihydrochloride [USAN]
289499-45-2
2D chemical structure of 289499-45-2
MW: 558.8663
3
Dacomitinib [USAN:INN]
1110813-31-4
2D chemical structure of 1110813-31-4
MW: 469.9455
4
439081-18-2
2D chemical structure of 439081-18-2
MW: 485.9445
5
Afatinib [USAN:INN]
850140-72-6
2D chemical structure of 850140-72-6
MW: 485.9445
%d bloggers like this: