Identification and Biological Evaluation of a Series of 1H-Benzo[de]isoquinoline-1,3(2H)-diones as Hepatitis C Virus NS5B Polymerase Inhibitors

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• 作者：Jesus M. Ontoria ; Edwin H. Rydberg ; Stefania Di Marco ; Licia Tomei ; Barbara Attenni ; Savina Malancona ; Jos I. Martin Hernando ; Nadia Gennari ; Uwe Koch ; Frank Narjes ; Michael Rowley ; Vincenzo Summa ; St
• 刊名：Journal of Medicinal Chemistry
• 出版年：2009
• 出版时间：August 27, 2009
• 年：2009
• 卷：52
• 期：16
• 页码：5217-5227
• 全文大小：1036K
• 年卷期：v.52,no.16(August 27, 2009)
• ISSN：1520-4804

文摘

The hepatitis C virus (HCV) NS5B RNA-dependent RNA polymerase (RdRp) plays a central role in virus replication. NS5B has no functional equivalent in mammalian cells and, as a consequence, is an attractive target for inhibition. Herein, we present 1H-benzo[de]isoquinoline-1,3(2H)-diones as a new series of selective inhibitors of HCV NS5B polymerase. The HTS hit 1 shows submicromolar potency in two different HCV replicons (1b and 2b) and displays no activity on other polymerases (HIV-RT, Polio-pol, GBV-b-pol). These inhibitors act during the pre-elongation phase by binding to NS5B non-nucleoside binding site Thumb Site II as demonstrated by crystal structure of compound 1 with the ΔC55-1b and ΔC21-2b enzymes and by mutagenesis studies. SAR in this new series reveals inhibitors, such as 20, with low micromolar activity in the HCV replicon and with good activity/toxicity window in cells.