Design, synthesis and antimicrobial activity of novel quinoline-2-one hybrids as promising DNA gyrase and topoisomerase IV inhibitors
作者:Mohammed A.I. Elbastawesy、Fatma A.M. Mohamed、Islam Zaki、Mohammed Issa Alahmdi、Seham S. Alzahrani、Hayat Ali Alzahrani、Hesham A.M. Gomaa、Bahaa G.M. Youssif
DOI:10.1016/j.molstruc.2023.134902
日期:2023.4
the most potent compounds achieving (MIC of 0.075, 0.018, 0.018 µg/ml) against B. subtilis, E. coli and S. aureus, respectively, comparable to ciprofloxacin. Moreover, in vitro E. coli topoisomerase IV and DNA gyrase inhibitory activity have been also assigned. 6c showed IC50 of 280± 30 nM, 17.50 ± 1.50 µM against reference Novobiocin with 170 ± 20 nM and 11± 2 µM, respectively.
设计并合成了一系列新的喹啉-2-一席夫碱杂化物。它们的结构已通过 1H NMR、13C NMR、质量和元素分析确定。筛选所有化合物的抗微生物活性并确定最小抑制浓度。化合物6c是对枯草芽孢杆菌、大肠杆菌和金黄色葡萄球菌最有效的化合物之一(MIC 分别为 0.075、0.018、0.018 µg/ml),与环丙沙星相当。此外,还指定了体外大肠杆菌拓扑异构酶 IV 和 DNA 促旋酶抑制活性。6c显示 IC 50分别为 280± 30 nM、17.50 ± 1.50 µM 和参考新霉素,分别为 170 ± 20 nM 和 11± 2 µM。