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Discovery of novel pleuromutilin derivatives as potent antibacterial agents

文献类型: 外文期刊

作者: Zhou, Yuhang 1 ; Yi, Yunpeng 2 ; Wang, Jiangkun 3 ; Yang, Zheng 1 ; Liu, Qinqin 1 ; Pu, Wanxia 1 ; Shang, Ruofeng 1 ;

作者机构: 1.CAAS, Lanzhou Inst Husb & Pharmaceut Sci, Minist Agr & Rural Affairs, Key Lab New Anim Drug Project Gansu Prov,Key Lab, Lanzhou 730050, Peoples R China

2.Shandong Acad Agr Sci, Shandong Prov Anim & Poultry Green Hlth Prod Crea, Inst Poultry Sci, 202 Gongyebeilu, Jinan 250023, Shandong, Peoples R China

3.Lanzhou Univ, Sch Basic Med Sci, Lanzhou 730000, Peoples R China

关键词: Pleuromutilin derivatives; Synthesis; Antibacterial activity; In vivo efficacy; Molecular docking

期刊名称:EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY ( 影响因子:7.088; 五年影响因子:6.427 )

ISSN: 0223-5234

年卷期: 2022 年 237 卷

页码:

收录情况: SCI

摘要: Novel pleuromutilin derivatives with 3,4-dihydropyrimidin and pyrimidine moieties were designed, synthesized, and evaluated for their antibacterial activities. Most of the synthesized derivatives, especially the compounds bearing the pyrimidine moieties, exhibited potent antibacterial activities against methicillin-resistant Staphylococcus aureus BNCC 337371 (MRSA-337371), Staphylococcus aureus ATCC 25923 (S. aureus-25923) and methicillin-resistant Staphylococcus epidermidis ATCC 51625 (MRSE-51625). Compounds 5a, 5g and 5h exerted the excellent antibacterial activities and selected to evaluate their bacterial killing kinetics. Compound 5h displayed the highest antibacterial activities with bacteriostatic activities against MRSA and further evaluated its efficacy in mouse systemic infection. The results showed that compound 5h exhibited potent in vivo antibacterial effects to significantly improve the survival rate of mice (ED50 = 16.14 mg/kg), reduce the bacterial load and alleviate the pathological changes in the lungs of the affected mice. Furthermore, molecular docking studies revealed that the selected compounds successfully localized in the pocket of 50S ribosomal subunit and the formed hydrogen bonds were the main interaction.

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