Discovery of novel
<i>N</i>
‐aryl pyrrothine derivatives as bacterial RNA polymerase inhibitors
作者:Mo‐Han Huang、Bo Kong、Jie‐Yun Meng、Yu‐Bin Lv、Yan‐Fen Peng、Yi‐Ping Chen、Xiang‐Duan Tan
DOI:10.1111/cbdd.13736
日期:2020.11
is a validated drug target for broad‐spectrum antibiotics, and its “switch region” is considered as the promising binding site for novel antibiotics. Based on the core scaffold of dithiolopyrrolone, a series of N‐aryl pyrrothine derivatives was designed, synthesized, and evaluated for their antibacterial activity. Compounds generally displayed more active against Gram‐positive bacteria, but less against
细菌 RNA 聚合酶 (RNAP) 是广谱抗生素的有效药物靶点,其“转换区”被认为是新型抗生素的有希望的结合位点。基于二硫并吡咯酮的核心支架,设计、合成了一系列N-芳基吡咯烷衍生物,并评估了它们的抗菌活性。化合物通常对革兰氏阳性菌显示出更高的活性,但对革兰氏阴性菌的活性较低。其中,化合物6e对利福平耐药金黄色葡萄球菌临床分离株表现出中等抗菌活性,最小抑制浓度值为1-2 μg/ml,抑制大肠杆菌RNAP,IC 50值 12.0 ± 0.9 μM。此外,化合物6e对HepG2和LO2细胞显示出一定程度的细胞毒性。此外,分子对接研究表明,化合物6e可能与细菌 RNAP 的开关区相互作用,其构象与粘液吡喃素 A 相似。N-芳基吡咯烷支架一起是发现对抗细菌 RNAP 的抗菌药物的有希望的先导。