@article { ISI:000296752300019, title = {Design, synthesis and biological evaluation of peptidyl-vinylaminophosphonates as novel cysteine protease inhibitors}, journal = {Bioorganic \& Medicinal Chemistry}, volume = {19}, number = {23}, year = {2011}, month = {DEC}, pages = {7129-7135}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

We report herein, design and synthesis of vinylaminophosphonates, a novel class of compounds as possible cysteine protease inhibitors. The synthesis of vinylaminophosphonates has been accomplished employing Tsuji-Trost reaction as a key step. The synthesized compounds were assayed against papain, a model cysteine protease and some of our synthesized compounds showed IC50 values in the range of 30-54 mu M thereby suggesting that these chemical entities thus could constitute an interesting template for the design of potential novel protease inhibitors. (C) 2011 Elsevier Ltd. All rights reserved.

}, keywords = {Cysteine, Inhibitor design, Protease inhibitors, synthesis, Tsuji-Trost reaction, Vinylaminophosphonates}, issn = {0968-0896}, doi = {10.1016/j.bmc.2011.09.058}, author = {Bhattacharya, Asish K. and Rana, Kalpeshkumar C.} } @article { ISI:000308042000010, title = {Efficient synthesis of a hydroxyethylamine (HEA) isostere and its alpha-aminophosphonate and phosphoramidate derivatives as potential anti-HIV agents}, journal = {Chemmedchem}, volume = {7}, number = {9}, year = {2012}, month = {SEP}, pages = {1601-1611}, publisher = {WILEY-V C H VERLAG GMBH}, address = {BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY}, abstract = {

HIV protease is a promising drug target for AIDS therapy, and several potent HIV-1 protease inhibitors have been reported to date. Although existing inhibitors exhibit high selectivity, they have also been associated with severe side effects and the possible emergence of therapeutic resistance. As HIV protease cleaves the peptide bond via a tetrahedral intermediate, various transition-state models such as hydroxyethylamine (HEA) have been designed. We therefore pursued an efficient synthesis of an HEA isostere; this was performed with a novel one-pot reductiontransiminationreduction reaction sequence as a key step. a-Aminophosphonate and phosphoramidate derivatives of the HEA isostere were designed and synthesized, and all of the synthesized derivatives were assayed for their anti-HIV activities against wild-type and mutant HIV strains. Phosphoramidate derivative 15?a was found to be the most active of all synthesized compounds against the IIIB and RES056 strains. As phosphonates are known to exhibit physiological stability, good cell permeability, and other promising pharmacokinetic characteristics, our newly synthesized compounds have the potential as alternatives to existing therapeutics and diagnostics.

}, keywords = {a-aminophosphonates, antiviral agents, hydroxyethylamine isosteres, phosphoramidates, synthesis}, issn = {1860-7179}, doi = {10.1002/cmdc.201200271}, author = {Bhattacharya, Asish K. and Rana, Kalpeshkumar C. and Pannecouque, Christophe and De Clercq, Eric} } @article {47025, title = {Short review of synthetic routes for the antiepileptic drug (R)-lacosamide}, journal = {Organic Process Research \& Development}, volume = {24}, year = {2020}, month = {JAN}, pages = {17-24}, type = {Review}, abstract = {

The disease epilepsy affects people of all ages and is due to a chronic neurological disorder in the brain. According to a report by the World Health Organization, epilepsy is one of the most common global neurological diseases. (R)-Lacosamide (Vimpat) was introduced by UCB Pharma in 2008 for the treatment of partial-onset seizures in patients suffering from epilepsy. This review summarizes all of the available synthetic strategies reported for (R)-lacosamide, which will help medicinal chemists in the further development of its synthesis.

}, keywords = {antiepileptic drug, epilepsy, lacosamide, serine derivative, synthesis}, issn = {1083-6160}, doi = {10.1021/acs.oprd.9b00373}, author = {Aratikatla, Eswar K. and Bhattacharya, Asish K.} }