The Design, Synthesis, and Antiviral Activity of Monofluoro and Difluoro Analogues of 4′-Azidocytidine against Hepatitis C Virus Replication: The Discovery of 4′-Azido-2′-deoxy-2′-fluorocytidine and 4′-Azido-2′-dideoxy-2′,2′-difluorocytidine
作者:David B. Smith、Genadiy Kalayanov、Christian Sund、Anna Winqvist、Tatiana Maltseva、Vincent J.-P. Leveque、Sonal Rajyaguru、Sophie Le Pogam、Isabel Najera、Kurt Benkestock、Xiao-Xiong Zhou、Ann C. Kaiser、Hans Maag、Nick Cammack、Joseph A. Martin、Steven Swallow、Nils Gunnar Johansson、Klaus Klumpp、Mark Smith
DOI:10.1021/jm801595c
日期:2009.5.14
The discovery of 4'-azidocytidine (3) (R1479) (J. Biol. Chem. 2006, 281, 3793; Bioorg. Med. Chem. Lett. 2007, 17, 2570) as a potent inhibitor of RNA synthesis by NS5B (EC50 = 1.28 mu M), the RNA polymerase encoded by hepatitis C virus (HCV), has led to the synthesis and biological evaluation of several monofluoro and difluoro derivatives of 4'-azidocytidine. The most potent compounds in this series were 4'-azido-2'-deoxy-2',2'-difluorocytidine and 4'-azido-2'-deoxy-2'-fluoroarabinocytidine with antiviral EC50 of 66 nM and 24 nM in the HCV replicon system, respectively. The structure-activity relationships within this series were discussed. which led to the discovery of these novel nucleoside analogues with the most potent compound, showing more than a 50-fold increase in antiviral potency as compared to 4'-azidocytidine (3).
US7378402B2
申请人:——
公开号:US7378402B2
公开(公告)日:2008-05-27
The Design, Synthesis, and Antiviral Activity of 4′-Azidocytidine Analogues against Hepatitis C Virus Replication: The Discovery of 4′-Azidoarabinocytidine
作者:David B. Smith、Genadiy Kalayanov、Christian Sund、Anna Winqvist、Pedro Pinho、Tatiana Maltseva、Veronique Morisson、Vincent Leveque、Sonal Rajyaguru、Sophie Le Pogam、Isabel Najera、Kurt Benkestock、Xiao-Xiong Zhou、Hans Maag、Nick Cammack、Joseph A. Martin、Steven Swallow、Nils Gunnar Johansson、Klaus Klumpp、Mark Smith
DOI:10.1021/jm800981y
日期:2009.1.8
hepatitis C virus, NS5B. Here we describe the synthesis and biological evaluation of several derivatives of 4′-azidocytidine by varying the substituents at the ribose 2′ and 3′-positions. The most potent compound in this series is 4′-azidoarabinocytidine with an IC50 of 0.17 μM in the genotype 1b subgenomic replicon system. The structure−activity relationships within this series of nucleoside analogues