A focused library of heterocyclic compounds including a 2-aminomethyl-1H-benzimidazole (1 – 19), 2-aminomethylindole (20 – 83), benzofuran-2-ylmethylamine (84 – 92), or 2-piperazin-1-ylmethylbenzoxazole (93) fragment was screened for the ability to inhibit in vitro hepatitis C virus (HCV). The synthetic methods were described. The antiviral activity and cytotoxicity data were presented. Most of the compounds carrying a benzoxazol-2-ylmethylamine fragment inhibited Huh7.3 human hepatoma cells infected in vitro with HCV with nanomolar potency but were inactive against the HCV RNA-replicon. The only exception was 9-methyl-N(6)-(3-nitrophenyl)-2,3,4,9-tetrahydro-1H-carbazole-1,6-diamine (67), which demonstrated nanomolar potency against HCV in both models. The most active and selective compounds were (piperazin-1-yl)-[(1Hindol-2-ylmethyl)piperidin-4-yl]-ketones (EC50 0.31 – 2.2 μM, CC50 10.2-110 μM) and 2-(1,2,3a,4,5,6-hexahydropyrazino[3,2,1-jk]carbazol-3-yl)acetamide (EC50 1.69 ± 0.5 μM, CC50 114 ± 42 μM). The two most selective inhibitors (28, TI50 = 52 and 77, TI50 = 68) were selected for further preclinical trials.
一个包括2-
氨甲基-1H-
苯并咪唑(1-19)、2-
氨甲基
吲哚(20-83)、
苯并呋喃-2-基
甲胺(84-92)或2-
哌嗪-1-基甲基苯并
噁唑(93)片段的
杂环化合物库被筛选出具有抑制体外丙型肝炎病毒(HCV)的能力。描述了合成方法。呈现了抗病毒活性和细胞毒性数据。大多数带有苯并
噁唑-2-基
甲胺片段的化合物以纳摩尔效力抑制Huh7.3人肝癌细胞在体外感染HCV,但对HCV RNA复制体无效。唯一的例外是9-甲基-N(6)-(3-
硝基苯基)-2,3,4,9-四氢-1H-
咔唑-1,6-二胺(67),它在两种模型中均显示出纳摩尔效力对抗HCV。活性最高且选择性最好的化合物是(
哌嗪-1-基)-[(1Hindol-2-基甲基)
哌啶-4-基]-酮(
EC50 0.31-2.2 μM,CC50 10.2-110 μM)和2-(1,2,3a,4,5,6-六氢
吡嗪[3,2,1-jk]
咔唑-3-基)乙酰胺(
EC50 1.69 ± 0.5 μM,CC50 114 ± 42 μM)。两个最具选择性的
抑制剂(28,TI50 = 52和77,TI50 = 68)被选定进行进一步的临床前试验。