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Several candidates….one is…….CRD1152

ONE OF THEM IS CRD 1152

Kynurenine pathway regulators (solid tumors)

Compound 2

CAS1638121-21-7

US159738837

N3-(3-Chloro-4- fluorophenyl) furo[2,3- c]pyridine-2,3- diamine

COMPD 190

CAS 1638118-99-6

US159738837

COMPD248

US159738837

7-Chloro-N3- (3-chloro-4- fluorophenyl) furo[2,3- c]pyridine-2,3- diamine,  166

DMSO-d6: δ 7.87 (d, J = 5.1 Hz, 1H), 7.25 (s, 2H), 7.16-7.10 (m, 2H), 6.88 (d, J = 5.1 Hz, 1H), 6.59 (dd, J′ = 6.2 Hz, J″ = 2.6 Hz, 1H), 6.48 (dt, J′ = 8.8 Hz, J″ = 6.7 Hz, J′′′ = 3.4 Hz, 1H) M + H] 312

US159738837

OR

N3-(3,4- difluorophenyl)- 7-(pyridin-4- yl)furo[2,3- c]pyridine-2,3- diamine, 184

CD3CN: δ 8.72 (s, 2H), 8.26 (s, 3H), 7.07-7.03 (m, 2H), 6.47-6.40 (m, 2H), 5.74 (s, 1H), 5.55 (s, 2H) M + H] 339

US159738837

OR

COMPD73

CAS 1638117-85-7

US159738837

Several candidates………..CRD1152

67

66

Company Curadev Pharma Pvt. Ltd.
Description Small molecule dual indoleamine 2,3-dioxygenase 1 (IDO1) and tryptophan 2,3-dioxygenase (TDO1; IDO) inhibitor
Molecular Target Indoleamine 2,3-dioxygenase (INDO) (IDO) ; Tryptophan 2,3-dioxygenase (TDO2) (TDO)
Mechanism of Action Indoleamine 2,3-dioxygenase (INDO) inhibitor
Therapeutic Modality Small molecule
Latest Stage of Development Preclinical
Standard Indication Cancer (unspecified)
Indication Details Treat cancer
Regulatory Designation
Partner Roche

Hoffmann-La Roche partners with Curadev Pharma Ltd. for IDO1 and TDO inhibitors (April 20, 2015)

Curadev Pharma Pvt Ltd., founded in 2010 and headquartered in New Delhi, announced that it has entered into a research collaboration and exclusive license agreement with Roche for the development and commercialization of IDO1 and TDO inhibitors to treat cancer. The agreement covers the development of CRD1152, the lead preclinical immune tolerance inhibitor and a research collaboration with Roche’s research and early development organization to further explore the IDO and TDO pathways.

IDO1 (indoleamine-2,3-dioxygenase-1) and TDO (tryptophan-2,3-dioxygenase) are enzymes that mediate cancer-induced immune suppression. This mechanism is exploited by tumor cells as well as certain type of immune cells, limiting the anti-tumor immune response. Dual inhibition of the IDO1 and TDO pathways promises to maintain the immune response, prevent local tumor immune escape and potentially avoid resistance to other immunotherapies when used in combination, and could lead to new treatment options for cancer patients. Curadev’s preclinical lead-compound, a small-molecule that shows potent inhibition of the two rate-limiting enzymes in the tryptophan to kynurenine metabolic pathways, has the potential for mono therapy as well as combination with Roche’s broad oncology pipeline and portfolio.

Under the terms of agreement, which includes a research collaboration with Roche’s research and early development organization, Curadev will receive an upfront payment of $25 million and will be eligible to receive up to $530 million in milestone payments, as well as escalating royalties potentially reaching double digits for the first product from the collaboration developed and commercialized by Roche. Curadev is also eligible for milestones and royalties on any additional products resulting from the research collaboration.

Curadev Announces Research Collaboration and Licensing Agreement to Develop Cancer Immunotherapeutic

Curadev’s dual IDO and TDO immune tolerance inhibitor – a novel approach in cancer immunotherapy

Apr 20, 2015, 06:30 ET from Curadev

NEW DELHI, India, April 20, 2015 /PRNewswire/ —

Curadev Pharma Private Ltd. today announced that it has entered into a research collaboration and exclusive license agreement with Roche for the development and commercialization of IDO1 and TDO inhibitors. The agreement covers the development of the lead preclinical immune tolerance inhibitor and a research collaboration with Roche’s research and early development organization to further explore the IDO and TDO pathways.

IDO1 (indoleamine-2, 3-dioxygenase-1) and TDO (tryptophan-2, 3-dioxygenase) are enzymes that mediate cancer-induced immune suppression. This mechanism is exploited by tumor cells as well as certain type of immune cells, limiting the anti-tumor immune response.

Dual inhibition of the IDO1 and TDO pathways promises to maintain the immune response, prevent local tumor immune escape and potentially avoid resistance to other immunotherapies when used in combination, and could lead to new treatment options for cancer patients. Curadev’s preclinical lead-compound, a small-molecule that shows potent inhibition of the two rate-limiting enzymes in the tryptophan – to kynurenine metabolic pathways, has the potential for mono therapy as well as combination with Roche’s broad oncology pipeline and portfolio.

“We are very excited to be working with the global leader in oncology with their unrivalled expertise in clinical development,” said Arjun Surya, PhD, Chief Scientific Officer, Curadev. “The collaboration acknowledges our focused research efforts on patient-critical drug targets that have yielded a drug candidate that could make a significant difference in the development of novel treatments for patients suffering from cancer.”

Under the terms of agreement, which includes a research collaboration with Roche’s research and early development organization to further extend Curadev’s findings, Curadev will receive an upfront payment of $25 million and will be eligible to receive up to $530 million in milestone payments based on achievement of certain predetermined events and sales levels as well as escalating royalties potentially reaching double digits for the first product from the collaboration developed and commercialized by Roche. Curadev would also be eligible for milestones and royalties on any additional products resulting from the research collaboration. Roche will fund future research, development, manufacturing and commercialization costs and will also provide additional research funding to Curadev for support of the research collaboration.

About Curadev

Headquartered in New Delhi, India, Curadev Pharma Private Limited was founded in 2010 by a team of professionals from the pharmaceutical and biotech sectors with the mission to improve human health and enhance the quality of human life by accelerating the discovery and delivery of new drugs. Curadev focuses on the creation and out-licensing of pre-IND assets and IND packages for drug development.

For further information:

Curadev Partnering

Manish Tandon – VP and Chief Financial Officer, manish@curadev.in

PATENT

US20160046596) INHIBITORS OF THE KYNURENINE PATHWAY

https://patentscope.wipo.int/search/en/detail.jsf?docId=US159738837&recNum=2&maxRec=17&office=&prevFilter=&sortOption=Pub+Date+Desc&queryString=FP%3A%28curadev%29&tab=PCTDescription

Monali Banerjee
Sandip Middya
Ritesh Shrivastava
Sushil Raina
Arjun Surya
Dharmendra B. Yadav
Veejendra K. Yadav
Kamal Kishore Kapoor
Aranapakam Venkatesan
Roger A. Smith
Scott K. Thompson

ONE ………….Example 2

Synthesis of N3-(3-Chloro-4-fluoro-phenyl)-furo[2,3-c]pyridine-2,3-diamine (Compound 2)


Step 1: 3-Methoxymethoxy-pyridine


      To a stirred solution of 3-hydroxypyridine (60 g, 662.9 mmol) in THF:DMF (120:280 mL) at 0° C. was added t-BuOK (81.8 gm, 729.28 mmol) portion-wise. After stirring the reaction mixture for 15 min, methoxymethyl chloride (52 mL, 696.13 mmol) was added to it at 0° C. and the resulting mixture was stirred for 1 hr at 25° C. Reaction mixture was diluted with water and extracted with ethyl acetate (4×500 mL). The organic layer was dried over anhydrous sodium sulfate, concentrated under reduced pressure to afford 100 g crude which was purified by column chromatography using silica (100-200 mesh) and 10% EtOAc-hexane as eluent to afford 3-methoxymethoxy-pyridine (54 g) as pale brown liquid. LCMS: 140 (M+H).

Step 2: 3-Methoxymethoxy-pyridine-4-carbaldehyde


      To a stirred solution of 3-methoxymethoxypyridine (2 g, 14.3885 mmol) in anhydrous THF (40 mL) was added TMEDA (1.83 g, 15.82 mmol) at 25° C. The reaction mixture was cooled to −78° C., n-BuLi (7.3 mL, 15.82 mmol, 2.17 M in hexane) was added dropwise manner maintaining the temperature −78° C. After stirring for 2 hr at −78° C., DMF (1.52 g, 20.86 mmol) was added to it and stirred for 2 hr at 25° C. Reaction mixture was cooled to −40° C. and saturated ammonium chloride solution was added drop wise. The reaction mass was extracted with ethyl acetate (250 mL×2), EtOAc part was washed with water followed by brine, dried over sodium sulfate and concentrated under reduced pressure to afford 3 g of crude product which was passed through a pad of silica (100-200 mesh) using 10% EtOAc-hexane as eluent to afford 1.6 g of 3-methoxymethoxy-pyridine-4-carbaldehyde as pale yellow liquid. GC-MS: 167 (m/z).

Step 3: 3-Hydroxy-pyridine-4-carbaldehyde


      To a stirred solution of 3-methoxymethoxypyridine-4-carbaldehyde (11 g, 65.83 mmol) in THF (50 mL) was added 3N HCl (100 mL) and stirred at 60° C. for 1 hr. The reaction mixture was cooled under ice bath and pH was adjusted to 7 with solid K2CO3. Resulting mixture was extracted with EtOAc (250 mL×5). The organic layer was dried over sodium sulfate, concentrated under reduced pressure to afford 15 g of crude which was purified by column chromatography using silica gel (100-200 mesh) and 23% EtOAc/hexane as eluent to afford 4 g of 3-hydroxy-pyridine-4-carbaldehyde as pale yellow solid. GC-MS: 123 (m/z), 1H-NMR (DMSO-d6, 400 MHz): δ 11.04 (bs, 1H), 10.37 (s, 1H), 8.46 (s, 1H), 8.20 (d, 1H, J=4.88 Hz), 7.46 (d, 1H, J=4.88 Hz). GC-FID: 99.51%.

Step 4: 4-{[3-Chloro-4-fluoro-phenylimino]-methyl}-pyridin-3-ol


      3-Hydroxypyridine-4-carbaldehyde (3 g, 24.39 mmol) was taken in mixed solvent (TFE (20 mL):MeCN (20 mL)) and 4-fluoro-3-chloroaniline (3.55 g, 24.39 mmol) was added to it at 25° C. The resulting mixture was stirred at this temperature for 1 hr. The reaction mass was concentrated and purified by triturating with n-pentane to afford 6 g of 4-{[3-chloro-4-fluoro-phenylimino]-methyl}-pyridin-3-ol). LCMS: 251.2 (M+H).

Step 5: N3-(3-Chloro-4-fluoro-phenyl)-furo[2,3-c]pyridine-2,3-diamine


      To a stirred solution of 4-{[3-chloro-4-fluoro-phenylimino]-methyl}-pyridin-3-ol (6 g, 24 mmol) in mixed solvent [DCM (10 mL):TFE (10 mL)] was added TMSCN (10.5 mL, 84 mmol) at 25° C. The reaction mixture was stirred 3 hr at 25° C., concentrated, and the crude material was triturated with n-pentane to provide 4.9 g (73% yield) of N3-(3-chloro-4-fluoro-phenyl)-furo[2,3-c]pyridine-2,3-diamine as pale pink solid. LCMS: 278 (M+H), HPLC: 98.65%, 1H-NMR (DMSO-d6, 400 MHz): δ 8.41 (s, 1H), 8.06 (d, 1H, J=5.08 Hz), 7.14-7.10 (m, 2H), 6.91 (s, 2H), 6.86 (d, 1H, J=5.08 Hz), 6.56-6.54 (m, 1H), 6.48-6.45 (m, 1H).

Monali Banerjee – Director, R&D

Ms. Banerjee has more than 10 years of research experience, during which she has held positions of increasing responsibility. Her past organizations include TCG Lifesciences (Chembiotek) and Sphaera Pharma. Ms. Banerjee is a versatile scientist with a deep understanding of the fundamental issues that underlie various aspects of drug discovery. At Curadev, she has been responsible for target selection, patent analysis, pharmacophore design, assay development, ADME/PK and in vivo and in vitro pharmacology. Ms. Banerjee holds a Masters in Biochemistry and a Bachelors in Chemistry both from Kolkata University.

writeup

The essential amino acid Tryptophan (Trp) is catabolized through the kynurenine (KYN) pathway. The initial rate-limiting step in the kynurenine pathway is performed by heme-containing oxidoreductase enzymes, including tryptophan 2,3-dioxygenase (TDO), indoleamine 2,3-dioxygenase-1 (IDO1), and indoleamine 2,3-dioxygenase-2 (IDO2). IDO1 and IDO2 share very limited homology with TDO at the amino acid level and, despite having different molecular structures, each enzyme has the same biochemical activity in that they each catalyze tryptophan to form N-formylkynurenine. IDO1, IDO2, and/or TDO activity alter local tryptophan concentrations, and the build-up of kynurenine pathway metabolites due to the activity of these enzymes can lead to numerous conditions associated with immune suppression.
      IDO1 and TDO are implicated in the maintenance of immunosuppressive conditions associated with the persistence of tumor resistance, chronic infection, HIV infection, malaria, schizophrenia, depression as well as in the normal phenomenon of increased immunological tolerance to prevent fetal rejection in utero. Therapeutic agents that inhibit IDO1, IDO2, and TDO activity can be used to modulate regulatory T cells and activate cytotoxic T cells in immunosuppressive conditions associated with cancer and viral infection (e.g. HIV-AIDS, HCV). The local immunosuppressive properties of the kynurenine pathway and specifically IDO1 and TDO have been implicated in cancer. A large proportion of primary cancer cells have been shown to overexpress IDO1. In addition, TDO has recently been implicated in human brain tumors.
      The earliest experiments had proposed an anti-microbial role for IDO1, and suggested that localized depletion of tryptophan by IDO1 led to microbial death (Yoshida et al., Proc. Natl. Acad. Sci. USA, 1978, 75(8):3998-4000). Subsequent research led to the discovery of a more complex role for IDO1 in immune suppression, best exemplified in the case of maternal tolerance towards the allogeneic fetus where IDO1 plays an immunosuppressive role in preventing fetal rejection from the uterus. Pregnant mice dosed with a specific IDO1 inhibitor rapidly reject allogeneic fetuses through induction of T cells (Munn et al., Science, 1998, 281(5380): 1191-3). Studies since then have established IDO1 as a regulator of certain disorders of the immune system and have discovered that it plays a role in the ability of transplanted tissues to survive in new hosts (Radu et al., Plast. Reconstr. Surg., 2007 June, 119(7):2023-8). It is believed that increased IDO1 activity resulting in elevated kynurenine pathway metabolites causes peripheral and ultimately, systemic immune tolerance. In-vitro studies suggest that the proliferation and function of lymphocytes are exquisitely sensitive to kynurenines (Fallarino et al., Cell Death and Differentiation, 2002, 9(10):1069-1077). The expression of IDO1 by activated dendritic cells suppresses immune response by mechanisms that include inducing cell cycle arrest in T lymphocytes, down regulation of the T lymphocyte cell receptor (TCR) and activation of regulatory T cells (T-regs) (Terness et al., J. Exp. Med., 2002, 196(4):447-457; Fallarino et al., J. Immunol., 2006, 176(11):6752-6761).
      IDO1 is induced chronically by HIV infection and in turn increases regulatory T cells leading to immunosuppression in patients (Sci. Transl. Med., 2010; 2). It has been recently shown that IDO1 inhibition can enhance the level of virus specific T cells and concomitantly reduce the number of virus infected macrophages in a mouse model of HIV (Potula et al., 2005, Blood, 106(7):2382-2390). IDO1 activity has also been implicated in other parasitic infections. Elevated activity of IDO1 in mouse malaria models has also been shown to be abolished by in vivo IDO1 inhibition (Tetsutani K., et al., Parasitology. 2007 7:923-30.
      More recently, numerous reports published by a number of different groups have focused on the ability of tumors to create a tolerogenic environment suitable for survival, growth and metastasis by activating IDO1 (Prendergast, Nature, 2011, 478(7368):192-4). Studies of tumor resistance have shown that cells expressing IDO1 can increase the number of regulatory T cells and suppress cytotoxic T cell responses thus allowing immune escape and promoting tumor tolerance.
      Kynurenine pathway and IDO1 are also believed to play a role in maternal tolerance and immunosuppressive process to prevent fetal rejection in utero (Munn et al., Science, 1998, 281(5380):1191-1193). Pregnant mice dosed with a specific IDO1 inhibitor rapidly reject allogeneic fetuses through suppression of T cells activity (Munn et al., Science, 1998, 281(5380):1191-1193). Studies since then have established IDO1 as a regulator of immune-mediated disorders and suggest that it plays a role in the ability of transplanted tissues to survive in new hosts (Radu et al., Plast. Reconstr. Surg., 2007 June, 119(7):2023-8).
      The local immunosuppressive properties of the kynurenine pathway and specifically IDO1 and TDO have been implicated in cancer. A large proportion of primary cancer cells overexpress IDO1 and/or TDO (Pilotte et al., Proc. Natl. Acad. Sci. USA, 2012, Vol. 109(7):2497-2502). Several studies have focused on the ability of tumors to create a tolerogenic environment suitable for survival, growth and metastasis by activating IDO1 (Prendergast, Nature, 2011, 478:192-4). Increase in the number of T-regs and suppression of cytotoxic T cell responses associated with dysregulation of the Kynurenine pathway by overexpression of IDO1 and/or TDO appears to result in tumor resistance and promote tumor tolerance.
      Data from both clinical and animal studies suggest that inhibiting IDO1 and/or TDO activity could be beneficial for cancer patients and may slow or prevent tumor metastases (Muller et al., Nature Medicine, 2005, 11(3):312-319; Brody et al., Cell Cycle, 2009, 8(12):1930-1934; Witkiewicz et al., Journal of the American College of Surgeons, 2008, 206:849-854; Pilotte et al., Proc. Natl. Acad. Sci. USA, 2012, Vol. 109(7):2497-2502). Genetic ablation of the IDO1 gene in mice (IDO1−/−) resulted in decreased incidence of DMBA-induced premalignant skin papillomas (Muller et al., PNAS, 2008, 105(44):17073-17078). Silencing of IDO1 expression by siRNA or a pharmacological IDO1 inhibitor 1-methyl tryptophan enhanced tumor-specific killing (Clin. Cancer Res., 2009, 15(2). In addition, inhibiting IDO1 in tumor-bearing hosts improved the outcome of conventional chemotherapy at reduced doses (Clin. Cancer Res., 2009, 15(2)). Clinically, the pronounced expression of IDO1 found in several human tumor types has been correlated with negative prognosis and poor survival rate (Zou, Nature Rev. Cancer, 2005, 5:263-274; Zamanakou et al., Immunol. Lett. 2007, 111(2):69-75). Serum from cancer patients has higher kynurenine/tryptophan ratio, a higher number of circulating T-regs, and increased effector T cell apoptosis when compared to serum from healthy volunteers (Suzuki et al., Lung Cancer, 2010, 67:361-365). Reversal of tumoral immune resistance by inhibition of tryptophan 2,3-dioxygenase has been studied by Pilotte et al. (Pilotte et al., Proc. Natl. Acad. Sci. USA, 2012, Vol. 109(7):2497-2502). Thus, decreasing the rate of kynurenine production by inhibiting IDO1 and/or TDO may be beneficial to cancer patients.
      IDO1 and IDO2 are implicated in inflammatory diseases. IDO1 knock-out mice don’t manifest spontaneous disorders of classical inflammation and existing known small molecule inhibitors of IDO do not elicit generalized inflammatory reactions (Prendergast et al. Curr Med Chem. 2011; 18(15):2257-62). Rather, IDO impairment alleviates disease severity in models of skin cancers promoted by chronic inflammation, inflammation-associated arthritis and allergic airway disease. Moreover, IDO2 is a critical mediator of autoantibody production and inflammatory pathogenesis in autoimmune arthritis. IDO2 knock-out mice have reduced joint inflammation compared to wild-type mice due to decreased pathogenic autoantibodies and Ab-secreting cells (Merlo et al. J. Immunol. (2014) vol. 192(5) 2082-2090). Thus, inhibitors of IDO1 and IDO2 are useful in the treatment of arthritis and other inflammatory diseases.
      Kynurenine pathway dysregulation and IDO1 and TDO play an important role in the brain tumors and are implicated in inflammatory response in several neurodegenerative disorders including multiple sclerosis, Parkinson’s disease, Alzheimer’s disease, stroke, amyotrophic lateral schlerosis, dementia (Kim et al., J. Clin. Invest, 2012, 122(8):2940-2954; Gold et al., J. Neuroinflammation, 2011, 8:17; Parkinson’s Disease, 2011, Volume 2011). Immunosuppression induced by IDO1 activity and the Kynurenine metabolites in the brain may be treated with inhibitors of IDO1 and/or TDO. For example, circulating T-reg levels were found to be decreased in patient with glioblastoma treated with anti-viral agent inhibitors of IDO1 (Soderlund, et al., J. Neuroinflammation, 2010, 7:44).
      Several studies have found Kynurenine pathway metabolites to be neuroactive and neurotoxic. Neurotoxic kynurenine metabolites are known to increase in the spinal cord of rats with experimental allergic encephalomyelitis (Chiarugi et al., Neuroscience, 2001, 102(3):687-95). The neurotoxic effects of Kynurenine metabolities is exacerbated by increased plasma glucose levels. Additionally, changes in the relative or absolute concentrations of the kynurenines have been found in several neurodegenerative disorders, such as Alzheimer’s disease, Huntington’s disease and Parkinson’s disease, stroke and epilepsy (Németh et al., Central Nervous System Agents in Medicinal Chemistry, 2007, 7:45-56; Wu et al. 2013; PLoS One; 8(4)).
      Neuropsychiatric diseases and mood disorders such as depression and schizophrenia are also said to have IDO1 and Kynurenine dysregulation. Tryptophan depletion and deficiency of neurotransmitter 5-hydroxytryptamine (5-HT) leads to depression and anxiety. Increased IDO1 activity decreases the synthesis of 5-HT by reducing the amount of Tryptophan availability for 5-HT synthesis by increasing Tryp catabolism via the kynurenine pathway (Plangar et al. (2012) Neuropsychopharmacol Hung 2012; 14(4): 239-244). Increased IDO1 activity and levels of both kynurenine and kynurenic acid have been found in the brains of deceased schizophrenics (Linderholm et al., Schizophrenia Bulletin (2012) 38: 426-432)). Thus, inhibition of IDO1, IDO1, and TDO may also be an important treatment strategy for patients with neurological or neuropsychiatric disease or disorders such as depression and schizophrenia as well as insomnia.
      Kynurenine pathway dysregulation and IDO1 and/or TDO activity also correlate with cardiovascular risk factors, and kynurenines and IDO1 are markers for Atherosclerosis and other cardiovascular heart diseases such as coronary artery disease (Platten et al., Science, 2005, 310(5749):850-5, Wirlietner et al. Eur J Clin Invest. 2003 July; 33(7):550-4) in addition to kidney disease. The kynurenines are associated with oxidative stress, inflammation and the prevalence of cardiovascular disease in patients with end-stage renal disease (Pawlak et al., Atherosclerosis, 2009, (204)1:309-314). Studies show that kynurenine pathway metabolites are associated with endothelial dysfunction markers in the patients with chronic kidney disease (Pawlak et al., Advances in Medical Sciences, 2010, 55(2):196-203).

///////CRD1152, CRD-1152, CRD 1152, CURADEV PHARMA PRIVATE LTD, ROCHE, IDO1 and TDO inhibitors, COLLABORATION, CANCER, indoleamine-2,3-dioxygenase-1, Hoffmann-La Roche, kynurenine pathway regulators, solid tumors


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DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO, Born in Mumbai in 1964 and graduated from Mumbai University, Completed his Ph.D from ICT, 1991,Matunga, Mumbai, India, in Organic Chemistry, The thesis topic was Synthesis of Novel Pyrethroid Analogues, Currently he is working with GLENMARK PHARMACEUTICALS LTD, Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 29 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 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 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 29 year tenure till date Aug 2016, Around 30 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, 25 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 13 lakh plus views on New Drug Approvals Blog in 212 countries......https://newdrugapprovals.wordpress.com/ , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc

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