Synthesis and antiviral properties of novel 7-heterocyclic substituted 7-deaza-adenine nucleoside inhibitors of Hepatitis C NS5B polymerase
作者:M. Emilia Di Francesco、Salvatore Avolio、Marco Pompei、Silvia Pesci、Edith Monteagudo、Vincenzo Pucci、Claudio Giuliano、Fabrizio Fiore、Michael Rowley、Vincenzo Summa
DOI:10.1016/j.bmc.2012.05.067
日期:2012.8
amino group of the nucleobase. The success of this strategy is reflected by the identification of several novel potent nucleoside inhibitors of HCV NS5B bearing a 7-heterocyclic substituted 7-deaza-adenine nucleobase. Amongst these, the 1,2,4-oxadiazole analog 11 showed high antiviral potency against HCV replication in replicon cells and efficient conversion to the corresponding NTP in vivo, with high
我们实验室之前的研究发现了一系列新型的丙型肝炎病毒 (HCV) NS5B 聚合酶的强效核苷抑制剂,该聚合酶带有四环 7-取代的 7-脱氮-腺嘌呤核碱基。建议这种修饰系统的平面性在观察到的高抑制效力中起作用。本文描述了我们如何设想通过分子内氢键保持修饰核碱基的所需平面性,使适当取代的 7-杂环残基上的氢键供体原子与核碱基的相邻氨基结合。该策略的成功体现在鉴定了几种新型的强效 HCV NS5B 核苷抑制剂,该抑制剂带有 7-杂环取代的 7-脱氮-腺嘌呤核碱基。其中,1,2,4-恶二唑类似物图11显示了在复制子细胞中抗HCV复制的高抗病毒效力和在体内向相应NTP的有效转化,在静脉内和口服给药后在大鼠肝脏中测量到高水平且持续的NTP。