Abstract

A series of 2,4-disubstituted-5-(6-alkylpyridin-2-yl)-1H-imidazoles, 7a–c, 11a–h, and 16a–h has been synthesised and evaluated for their ALK5 inhibitory activity in an enzyme assay and in a cell-based luciferase reporter assay. Incorporation of a quinoxalin-6-yl moiety and a methylene linker at the 4- and 2-position of the imidazole ring, respectively, and a m-CONH₂ substituent in the phenyl ring generated a highly potent and selective ALK5 inhibitor 11e. Docking model of ALK5 in complex with 11e showed that it fitted well in the ATP-binding pocket with favourable interactions.

中文翻译：

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作为ALK5抑制剂的2,4-二取代-5-（6-烷基吡啶-2-基）-1H-咪唑的合成，生物学评估和分子建模

摘要

合成了一系列2,4-二取代的5-（6-烷基吡啶-2-基）-1 H-咪唑类化合物7a–c，11a–h和16a–h，并在一定条件下评估了它们对ALK5的抑制活性。酶分析和基于细胞的萤光素酶报告基因分析。分别在咪唑环的4-位和2-位引入喹喔啉-6-基部分和亚甲基接头，以及在苯环中引入m- CONH ₂取代基，产生了高效的选择性ALK5抑制剂11e。与11e形成复合物的ALK5的对接模型表明，它与ATP结合袋非常吻合，相互作用良好。