Discovery of fused heterocyclic carboxamide derivatives as novel α7-nAChR agonists: Synthesis, preliminary SAR and biological evaluation
作者:Yu Xue、Xiaomeng He、Taoyi Yang、Yuxi Wang、Zhenming Liu、Guisen Zhang、Yanxing Wang、Kewei Wang、Liangren Zhang、Lihe Zhang
DOI:10.1016/j.ejmech.2019.111618
日期:2019.11
Emax than EVP-6124. The result illustrated the importance of aromaticity to the activity of agonism. Compound 10a, which showed EC50 of 1.88 μM and Emax of 72.4%, was further characterized comprehensively, including co-application with type II positive allosteric modulator PNU-120596, selectivity with other closely related ligand-gated ion channel, etc. The results showed that 10a showed moderate selectivity
α7烟碱乙酰胆碱受体(α7nAChR)已成为精神分裂症的有希望的治疗靶标。在我们之前的工作中,发现了一系列新型的带有吲哚嗪骨架的α7-nAChR激动剂。为了探索芳香性对活性的影响并找到更多的活性剂,本文设计并合成了稠合的杂环羧酰胺衍生物。根据非洲爪蟾卵母细胞的两电极电压钳评估,合成的27种化合物显示出明显的α7nAChR激动作用。特别地,化合物10a和10e显示出比EVP-6124明显更高的Emax。结果表明芳香性对激动活性的重要性。化合物10a的EC50为1.88μM,Emax为72.4%,对其进行了进一步的全面表征,包括与II型正变构调节剂PNU-120596共同应用,与其他紧密相关的配体门控离子通道的选择性等。结果显示10a对其他亚型(如α4β2和α3β4nAChR)表现出中等选择性。图10a引起了被MLA抑制并在α7PAM PNU-120596的存在下增强的α7样电流。结合模式的分