Design and synthesis of indole, 2,3-dihydro-indole, and 3,4-dihydro-2H-quinoline-1-carbothioic acid amide derivatives as novel HCV inhibitors
作者:Iou-Jiun Kang、Li-Wen Wang、Sheng-Ju Hsu、Chung-Chi Lee、Yen-Chun Lee、Yen-Shian Wu、Tsu-An Hsu、Andrew Yueh、Yu-Sheng Chao、Jyh-Haur Chern
DOI:10.1016/j.bmcl.2009.06.009
日期:2009.8
An efficient synthetic methodology to provide indole, 2,3-dihydro-indole, and 3,4-dihydro-2H-quinoline-1-carbothioic acid amide derivatives is described. These conformationally restricted heterobicyclic scaffolds were evaluated as a novel class of HCV inhibitors. Introduction of an acyl group at the NH2 of the thiourea moiety has been found to enhance inhibitory activity. The chain length and the position of the alkyl group on the indoline aromatic ring markedly influenced anti-HCV activity. The indoline scaffold was more potent than the corresponding indole and tetrahydroquinoline scaffolds and analogue 31 displayed excellent activity (EC50 = 510 nM) against HCV without significant cytotoxicity (CC50 > 50 mu M). (C) 2009 Elsevier Ltd. All rights reserved.