Antibiotic resistance and drug modification: Synthesis, characterization and bioactivity of newly modified potent pleuromutilin derivatives with a substituted piperazine moiety

文献类型： 外文期刊

第一作者： Yi, Yunpeng

作者： Yi, Yunpeng;Yang, Shifa;Liu, Yueyue;Yin, Bin;Zhao, Zengcheng;Li, Guiming;Huang, Zhongli;Lin, Shuqian;Chen, Lei;Liu, Fei;Shang, Ruofeng;Shang, Ruofeng

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关键词： Pleuromutilin derivatives; Synthesis; Antibacterial activity; Molecular docking

期刊名称：BIOORGANIC CHEMISTRY （ 影响因子：5.1； 五年影响因子：5.3 ）

ISSN： 0045-2068

年卷期： 2023 年 132 卷

页码：

收录情况： SCI

摘要： Antibiotic-resistant bacteria pose a major global public health concern, owing to the lack of effective antibac-terial drugs. Consequently, the discovery and development of innovative antibacterial drug classes with unique mechanisms of action are urgently needed. In this study, we designed, synthesised, and tested a series of novel pleuromutilin derivatives with piperazine linker substituted by amino acids moieties to determine their anti-bacterial properties. Most synthesized compounds exhibited potent activities against Staphylococcus aureus (S. aureus), methicillin-resistant S. aureus (MRSA), and methicillin-resistant Staphylococcus epidermidis. Com-pound 6l, the most potent antibacterial agent created in this study, displayed a rapid bactericidal activity against MRSA, Klebsiella pneumoniae and S. aureus cfr N12. Moreover, pharmacokinetics study of compound 6l exhibited good PK performance with a low in vivo clearance (CL = 1965 mL/h/kg) and a suitable half-life (T1/2 = 11.614 +/- 5.123 h). Molecular docking experiments revealed the binding model of compound 6l to the unmethylated A2503 of peptidyl transferase centre of 23S rRNA. Interaction pattern of 6l with cfr-mediated ribosomes revealed by molecular dynamics. Moreover in vivo mouse systemic infection experiments with compound 6l revealed its effectiveness against MRSA and S. aureus cfr N12 with the ED50 of 11.08 mg/kg and 14.63 mg/kg body weight, respectively.

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