Design, synthesis of novel 4,5-dihydroisoxazole-containing benzamide derivatives as highly potent FtsZ inhibitors capable of killing a variety of MDR Staphylococcus aureus
作者:Di Song、Fangchao Bi、Nan Zhang、Yinhui Qin、Xingbang Liu、Yuetai Teng、Shutao Ma
DOI:10.1016/j.bmc.2020.115729
日期:2020.11
Hela cells. Finally, a detailed discussion of structure-activity relationships was conducted, referring to the docking results. It is worth noting that substituting a 4,5-dihydroisoxazole ring for the isoxazole ring not only broadened the antibacterial spectrum but also resulted in a significant increase in antibacterial activity against S. aureus strains. Taken together, these results suggest a promising
具有临床意义的细菌病原体(例如耐甲氧西林的金黄色葡萄球菌(MRSA)和耐万古霉素的金黄色葡萄球菌(VRSA))对抗生素的耐药性正成为对公共卫生的普遍威胁,因此,具有新颖作用机制的新型抗菌剂正在广泛使用。紧急需求。作为开发抗菌剂的持续努力的一部分,我们合理地设计和合成了针对细菌细胞分裂蛋白FtsZ的两个系列的含4,5-二氢异恶唑-5基和4,5-二氢异恶唑-3-基的苯甲酰胺衍生物。 。评价它们对一组革兰氏阳性和阴性病原体的活性表明,化合物A16拥有4,5-二氢异恶唑-5-基的化合物对各种测试菌株(包括耐甲氧西林,耐青霉素和临床分离的金黄色葡萄球菌)表现出出色的抗菌活性(MIC,≤0.125–0.5μg/ mL)。此外,进一步的小鼠感染模型表明,A16可能在体内有效并且对Hela细胞无毒。最后,参考对接结果对结构-活动关系进行了详细的讨论。值得注意的是,用4,5-二氢异恶唑环代替异恶唑环不仅扩大