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CAS : 139133-26-9
 N-Methyl-N-[[4-[(2-methyl-1H-imidazo[4,5-c]pyridin-1-yl)methyl]phenyl]sulfonyl]-L-leucine ethyl ester
 N-methyl-N-[[a-(2-methyl-1H-imidazo[4,5-c]pyridin-1-yl)-p-tolyl]sulfonyl]-L-leucine ethyl ester
N-Methyl-N-[4-(2-methyl-1H-imidazo[4,5-c]pyridin-1-ylmethyl)phenylsulfonyl]-L-leucine ethyl ester
Manufacturers’ Codes: BB-882
Trademarks: Zacutex (Brit. Biotech)
MF: C23H30N4O4S
M Wt: 458.57
Percent Composition: C 60.24%, H 6.59%, N 12.22%, O 13.96%, S 6.99%
Properties: White crystalline solid from ethyl acetate, mp 105°. [a]D20 -6.7° (c = 2.0 in CDCl3).
Melting point: mp 105°
Optical Rotation: [a]D20 -6.7° (c = 2.0 in CDCl3)
Therap-Cat: Anti-inflammatory. (Nonsteroidal); Platelet Activating Factor Antagonist.
Lexipafant is a platelet-activating factor (PAF) antagonist that was in early clinical development at DevCo for the oral treatment of dementia and motor function disorders in HIV patients, intravenous treatment of acute pancreatitis, as well as for the prevention of certain serious renal and neurological complications experienced by patients undergoing cardiac surgery, including stroke. However, no recent developments of the drug candidate have been reported by the company.
Lexipafant was also being studied at British Biotech (now Vernalis) for the intravenous treatment of pancreatitis, but development for this indication was discontinued. In 2002, DevCo obtained from British Biotech exclusive rights to develop, manufacture and sell lexipafant for the treatment of human disease, excluding the fields of oncology and ophthalmology.
WO 1993016075


WO 1995013064
Chemical structure for LEXIPAFANT
Literature References:
Platelet activating factor (PAF) antagonist. Prepn: M. Whittaker, A. Miller, WO 9203422eidem, US5200412 (1992, 1993 both to British Bio-Technology).
Structure-activity report: M. Whittaker et al., J. Lipid Mediators Cell Signalling 10, 151 (1994).
Pharmacology: F. M. Abu-Zidan et al., Pharmacol. Toxicol. 78, 23 (1996).
Clinical evaluation in acute pancreatitis: A. N. Kingsnorth et al., Br. J. Surg. 82, 1414 (1995).

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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, 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...... , 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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