Inhibitors of hepatitis C virus polymerase: Synthesis and characterization of novel 2-oxy-6-fluoro-N-((S)-1-hydroxy-3-phenylpropan-2-yl)-benzamides
作者:Cliff C. Cheng、Gerald W. Shipps、Zhiwei Yang、Noriyuki Kawahata、Charles A. Lesburg、José S. Duca、Jamie Bandouveres、Jack D. Bracken、Chuan-kui Jiang、Sony Agrawal、Eric Ferrari、H.-C. Huang
DOI:10.1016/j.bmcl.2010.02.054
日期:2010.4
SAR exploration from an initial hit, (S)-N-(2-cyclohexenylethyl)-2-fluoro-6-(2-(1-hydroxy-3-phenylpropan-2-ylamino)-2-oxoethoxy)benzamide (1), identified using our proprietary automated ligand identification system (ALIS),(1) has led to a novel series of selective hepatitis C virus (HCV) NS5B polymerase inhibitors with improved in vitro potency as exemplified by (S)-2-fluoro-6-(2-(1-hydroxy-3-phenylpropan-2-ylamino)-2-oxoethoxy)-N-isopentyl-N-methylbenzamidecarboxamide (41) (IC(50) = 0.5 mu M). The crystal structure of an analogue (44) was solved and provided rationalization of the SAR of this series, which binds in a distinct manner in the palm domain of NS5B, consistent with biochemical analysis using enzyme mutant variants. These data warrant further lead optimization efforts on this novel series of non-nucleoside inhibitors targeting the HCV polymerase. (C) 2010 Elsevier Ltd. All rights reserved.