4′-Substituted pyrimidine nucleosides lacking 5′-hydroxyl function as potential anti-HCV agents
作者:Neeraj Shakya、Satish Vedi、Chao Liang、Fang Yang、Babita Agrawal、Rakesh Kumar
DOI:10.1016/j.bmcl.2014.01.024
日期:2014.3
Hepatitis C virus (HCV) infection is one of the major health problems worldwide. If left untreated, it leads to liver cirrhosis, liver cancer and death. Herein, we report synthesis and anti-HCV activity of a new class of pyrimidine nucleosides possessing a 4'-carboxymethyl (9-16, 21 and 23) or 4'-carboxamide function (17-19 and 24). Among these, 10-12 (EC50 = 33.1-42.4 mu M), 14 and 21 (EC50 = 43.4-59.5 mu M) exhibited potent activity in HCV-1a replicon cells without any toxicity to parent Huh-7 cells (CC50 = > 829-1055 mu M). The anti-HCV activities demonstrated by this unusual class of compounds were superior to that of ribavirin (EC50 = 81.9 lM). Further, the most active analog, 12, was found to interact synergistically with ribavirin to inhibit HCV RNA replication. (C) 2014 Published by Elsevier Ltd.