Design, synthesis, and evaluation of novel pleuromutilin aryl acrylate derivatives as promising broad-spectrum antibiotics especially for combatting multi-drug resistant gram-negative bacteria
作者:Min Li、Jialin Li、Jingyi Li、Jie Zhang、Yuqing Zhao、Wenying Li、Yunfei Zhang、Jinrong Hu、Xiaolin Xie、Dezhu Zhang、Han Li、Qianqian Zhao、Hong Gao、Chengyuan Liang
DOI:10.1016/j.ejmech.2023.115653
日期:2023.11
exploring novel antibacterial drugs. To address this, the present study endeavors to design and synthesize a collection of pleuromutilin aromatic acrylate derivatives, guided by combination principles. The antibacterial activity and structure-activity relationship of these derivatives were evaluated, and most of the derivatives displayed moderate to excellent antibacterial activity against both Gram-positive
耐药菌株的出现对传统抗生素提出了严峻的挑战,凸显了探索新型抗菌药物的紧迫性。为了解决这个问题,本研究以组合原理为指导,努力设计和合成一系列 pleuromutilin 芳香族丙烯酸酯衍生物。评价这些衍生物的抗菌活性和构效关系,大多数衍生物对革兰氏阳性菌和革兰氏阴性菌均表现出中等至极好的抗菌活性。在这些衍生物中,5g 表现出最强的抗菌活性,MIC(最小抑菌浓度)值范围为 1-32 μg/mL,对临床分离的耐药菌株的 MIC 值为 4-64 μg/mL。此外,5g 表现出可忽略不计的细胞毒性、卓越的抗支原体活性以及更大的扰乱细菌细胞膜的倾向。值得注意的是,5g 的给药导致 MRSA(耐甲氧西林金黄色葡萄球菌)感染小鼠的存活率增加,ED 50 (中位有效剂量)值为 9.04 mg/kg。这些结果表明 5g 作为临床治疗耐药细菌感染的抗菌药物具有进一步发展的潜力。