Symmetric benzidine derivatives as anti-HCV agents: Insight into the nature, stereochemistry of the capping amino acid and the size of the terminal capping carbamates
作者:Shereen E. Abdel Karim、Youssef H. Youssef、Mohammad Abdel-Halim、Efseveia Frakolaki、Niki Vassilaki、Grigoris Zoidis、Nermin S. Ahmed、Ashraf H. Abadi
DOI:10.1016/j.bioorg.2020.104089
日期:2020.9
and N-isobutyloxycarbonyl capping group, was the most active within the two series, with EC50 = 0.0067 nM. Moreover, it showed high SI50 > 14788524 and was not cytotoxic at the highest tested concentration (100 μΜ), indicating its safety profile. Compound 4 also inhibited HCV genotypes 2a, 3a and 4a. Compared to the clinically approved NS5A inhibitor Daclatasvir, compound 4 shows higher activity against
新的对称分子,带有联苯胺脯氨酰胺核心,两个末端氨基甲酸酯帽的大小和性质可变,包括天然和非天然氨基酸。核心结构的几个末端N-氨基甲酸酯取代基,范围从直链甲基,乙基和丁基到支链异丁基;还合成了芳族取代基。 系列1具有疏水的AA残基,即S和R苯基甘氨酸和末端氨基甲酸酯封端基团,而系列2带有含硫的氨基酸,特别是S和R蛋氨酸和天然的R甲基半胱氨酸。使用HCV 1b(Con1)报告基因复制子细胞系测试了新化合物的抑制活性(EC 50)和细胞毒性(CC 50)。具有非天然封端残基且带有d-苯基甘氨酸氨基酸残基和N-异丁氧基羰基封端基团的化合物4在这两个系列中活性最高,EC 50 = 0.0067 nM。此外,它显示出高SI 50 > 14788524,并且在最高测试浓度(100μM)下没有细胞毒性,表明其安全性。化合物4还抑制HCV基因型2a,3a和4a。与临床批准的NS5A抑制剂Daclatasvi