Discovery of new riminophenazine analogues as antimycobacterial agents against drug-resistant Mycobacterium tuberculosis
作者:Xiaoqiang Zhao、Yuheng Mei、Zhihao Guo、Shuyi Si、Xican Ma、Yinghong Li、Yan Li、Danqing Song
DOI:10.1016/j.bioorg.2022.105929
日期:2022.11
for their antimycobacterial activities against Mycobacterium marinum. and M. tuberculosis H37Rv, taking clofazimine (1) as the lead. Structure-activity relationship (SAR) analysis revealed that the introduction of a heterocycle or diethylamine substituted benzene moiety on the N-5 atom might be beneficial for activity. The most potent compound 7m also displayed enhanced activity against both wild-type
制备了 23 种新的 riminophenazine 和 pyrido[3,2-b]quinoxaline 衍生物,并检查了它们对海分枝杆菌的抗分枝杆菌活性。和结核分枝杆菌H37Rv,以氯法齐明( 1 )为先导。构效关系 (SAR) 分析表明,在N -5 原子上引入杂环或二乙胺取代的苯部分可能对活性有益。最有效的化合物7m对野生型以及耐多药 (MDR) 和广泛耐药 (XDR) TB 临床分离株也表现出增强的活性,MIC 范围为 0.08 至 1.25 μg/mL,尤其对菌株 M20A507,抗1 . 进一步的机制研究表明,其抗结核活性与细胞膜破坏无关,但与 NDH-2 减少和由此产生的高 ROS 产生有关。我们的研究为进一步将氯法齐明衍生物开发成有前景的抗 MDR 和 XDR TB 的抗菌剂提供了指导。