Design, synthesis, and biological evaluation of novel pleuromutilin derivatives containing benzimidazoles as effective anti‐MRSA agents
作者:Qi‐Wen Zhang、Jie Ren、Jia‐Xun Lu、Xiao‐Ying Chen、Xian‐Jin He、Qi Wang、Zi‐Dan Zhou、Zhen Jin、Zhen‐Ling Zeng、You‐Zhi Tang
DOI:10.1002/ddr.22095
日期:2023.11
A series of pleuromutilin derivatives containing benzimidazole were designed, synthesized, and evaluated for their antibacterial activities against Methicillin-resistant Staphylococcus aureus (MRSA) in this study. The in vitro antibacterial activities of the synthesized derivatives against four strains of S. aureus (MRSA ATCC 43300, S. aureus ATCC 29213, S. aureus 144, and S. aureus AD3) were determined
本研究设计、合成了一系列含有苯并咪唑的截短侧耳素衍生物,并评价了其对耐甲氧西林金黄色葡萄球菌(MRSA)的抗菌活性。通过肉汤稀释法测定了合成衍生物对四种金黄色葡萄球菌菌株(MRSA ATCC 43300、金黄色葡萄球菌ATCC 29213、金黄色葡萄球菌144 和金黄色葡萄球菌AD3)的体外抗菌活性。在这些衍生物中,化合物58对MRSA(最低抑菌浓度[MIC] = 0.0625 μg/mL)表现出优于泰妙菌素(MIC = 0.5 μg/mL)的体外抗菌作用。与泰妙菌素相比,化合物58对MRSA具有更快的杀菌动力学和更长的抗生素后作用时间。同时,在8 μg/mL浓度下,化合物58对RAW 264.7细胞没有表现出明显的细胞毒作用。此外,在减少小鼠大腿感染模型中的 MRSA 负荷方面,化合物58 (-2.04 log 10 CFU/mL) 表现出比泰妙菌素 (-1.02 log 10 CFU/mL)