Fragment-based discovery of novel and selective mPGES-1 inhibitors Part 1: Identification of sulfonamido-1,2,3-triazole-4,5-dicarboxylic acid
作者:Kijae Lee、Van Chung Pham、Min Ji Choi、Kyung Ju Kim、Kyung-Tae Lee、Seong-Gu Han、Yeon Gyu Yu、Jae Yeol Lee
DOI:10.1016/j.bmcl.2012.11.019
日期:2013.1
Microsomal prostaglandin E synthase-1 (mPGES-1) is an inducible prostaglandin E synthase that catalyzes the conversion of prostaglandin PGH(2) to PGE(2) and represents a novel target for therapeutic treatment of inflammatory disorders. It is essential to identify mPGES-1 inhibitor with novel scaffold as new hit or lead compound for the purpose of the next-generation anti-inflammatory drugs. Herein we report the discovery of sulfonamido-1,2,3-triazole-4,5-dicarboxylic derivatives as a novel class of mPGES-1 inhibitors identified through fragment-based virtual screening and in vitro assays on the inhibitory activity of the actual compounds. 1-[2-(N-Phenylbenzenesulfonamido)ethyl]-1H-1,2,3-triazole-4,5-dicarboxylic acid (6f) inhibits human mPGES-1 (IC50 of 1.1 mu M) with high selectivity (ca. 1000-fold) over both COX-1 and COX-2 in a cell-free assay. In addition, the activity of compound 6f was again tested at 10 mu M concentration in presence of 0.1% Triton X-100 and found to be reduced to 1/4 of its original activity without this detergent. Compared to the complete loss of activity of nuisance inhibitor with the detergent, therefore, compound 6f would be regarded as a partial nuisance inhibitor of mPGES-1 with a novel scaffold for the optimal design of more potent mPGES-1 inhibitors. (C) 2012 Elsevier Ltd. All rights reserved.