Synthesis and antiviral activity of 2′-deoxy-2′-fluoro-2′-C-methyl-7-deazapurine nucleosides, their phosphoramidate prodrugs and 5′-triphosphates
作者:Junxing Shi、Longhu Zhou、Hongwang Zhang、Tamara R. McBrayer、Mervi A. Detorio、Melissa Johns、Leda Bassit、Megan H. Powdrill、Tony Whitaker、Steven J. Coats、Matthias Götte、Raymond F. Schinazi
DOI:10.1016/j.bmcl.2011.09.089
日期:2011.12
novel α- and β-d-2′-deoxy-2′-fluoro-2′-C-methyl-7-deazapurine nucleoside analogs were synthesized and evaluated for in vitro antiviral activity. Several α- and β-7-deazapurine nucleoside analogs exhibited modest anti-HCV activity and cytotoxicity. Four synthesized 7-deazapurine nucleoside phosphoramidate prodrugs (18–21) showed no anti-HCV activity, whereas the nucleoside triphosphates (22–24) demonstrated
合成了30 种新型 α- 和 β- d -2'-deoxy-2'-fluoro-2'- C -methyl-7-deazapurine 核苷类似物,并评估了其体外抗病毒活性。几种 α- 和 β-7- 脱氮嘌呤核苷类似物表现出适度的抗 HCV 活性和细胞毒性。四种合成的 7-脱氮嘌呤核苷氨基磷酸酯前药 ( 18 – 21 ) 没有表现出抗 HCV 活性,而三磷酸核苷 ( 22 – 24)) 显示出对野生型和 S282T 突变型 HCV 聚合酶的有效抑制作用。Huh-7 细胞的细胞药理学研究表明,核苷或氨基磷酸酯前药均未形成显着水平的 5'-三磷酸,表明磷酸化不足是缺乏抗 HCV 活性的原因。抗 HIV-1 活性的评估表明,一种不寻常的 α 型 7-碳甲氧基乙烯基取代核苷 ( 10 ) 具有良好的抗 HIV-1 活性(EC 50 = 0.71 ± 0.25 μM;EC 90 = 9.5 ±