<scp>d</scp>- and <scp>l</scp>-2‘,3‘-Didehydro-2‘,3‘-dideoxy-3‘-fluoro-carbocyclic Nucleosides: Synthesis, Anti-HIV Activity and Mechanism of Resistance
作者:Jianing Wang、Yunho Jin、Kimberly L. Rapp、Raymond F. Schinazi、Chung K. Chu
DOI:10.1021/jm061304k
日期:2007.4.1
bond in carbocyclic nucleosides has provided biologically interesting compounds with potent anti-HIV activity. As an extension of our previous works in the discovery of anti-HIV agents, D- and L-2',3'-unsaturated 3'-fluoro carbocyclic nucleosides were synthesized and evaluated against HIV-1 in human peripheral blood mononuclear (PBM) cells. Among the synthesized L-series nucleosides, compounds 18, 19
在碳环核苷的2',3'-双键上引入2'-氟取代已提供了具有强大的抗HIV活性的生物学有趣化合物。作为我们以前在发现抗HIV药物方面的工作的延伸,合成了D-和L-2',3'-不饱和3'-氟碳环核苷,并评估了人外周血单核(PBM)中的HIV-1细胞。在合成的L系列核苷中,化合物18、19、26和28表现出中等的抗病毒活性(EC50分别为7.1 microM,6.4 microM,10.3 microM和20.7 microM),而D系列中的鸟苷类似物(35 ,D-3'-FC-d4G)表现出最有效的抗HIV活性(EC50为0.4 microM,EC90为2.8 microM)。然而,鸟苷类似物35对拉米夫定耐药变体(HIV-1M184V)交叉耐药。分子模型研究表明,疏水相互作用以及氢键作用可稳定野生型HIV逆转录酶(HIV-RT)活性位点中化合物35的结合。在L-核苷的情况下,这两种作用是相反的