Design, synthesis and biological evaluation of indole-2-carboxylic acid derivatives as IDO1/TDO dual inhibitors
作者:Guonan Cui、Fangfang Lai、Xiaoyu Wang、Xiaoguang Chen、Bailing Xu
DOI:10.1016/j.ejmech.2019.111985
日期:2020.2
indole-2-carboxylic acid derivatives were synthesized, and their inhibitory activities against both enzymes along with structure-activity relationships were investigated. As a result, a number of 6-acetamido-indole-2-carboxylic acid derivatives were found to be potent dual inhibitors with IC50 values at low micromolar levels. Among them, compound 9o-1 was the most potent inhibitor with an IC50 value
吲哚胺 2,3-双加氧酶 1 (IDO1) 和色氨酸 2,3-双加氧酶 (TDO) 参与色氨酸代谢的关键步骤,是肿瘤免疫治疗的潜在新靶点。在这项工作中,合成了多种吲哚-2-羧酸衍生物,并研究了它们对两种酶的抑制活性以及构效关系。结果,发现许多 6-乙酰氨基-吲哚-2-羧酸衍生物是有效的双重抑制剂,在低微摩尔水平下具有 IC50 值。其中,化合物9o-1是最有效的抑制剂,对IDO1的IC50值为1.17 μM,对TDO的IC50值为1.55 μM。此外,由化合物 9p 氧化产生的对苯醌衍生物 9p-O,还鉴定了它对两种酶的强烈抑制作用,IC50 值在两位数纳摩尔水平。使用分子对接和分子动力学模拟,我们预测了 IDO1 和 TDO 结合口袋内此类化合物的结合模式。该结果为进一步优化该系列 IDO1/TDO 双抑制剂的结构提供了见解。