Synthesis of Tridecaptin–Antibiotic Conjugates with in Vivo Activity against Gram-Negative Bacteria

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• 作者：Stephen A. Cochrane ; Xuefeng Li ; Sisi He ; Min Yu ; Min Wu ; John C. Vederas
• 刊名：Journal of Medicinal Chemistry
• 出版年：2015
• 出版时间：December 24, 2015
• 年：2015
• 卷：58
• 期：24
• 页码：9779-9785
• 全文大小：408K
• ISSN：1520-4804

文摘

A series of tridecaptin–antibiotic conjugates were synthesized and evaluated for in vitro and in vivo activity against Gram-negative bacteria. Covalently linking unacylated tridecaptin A₁ (H-TriA₁) to rifampicin, vancomycin, and erythromycin enhanced their activity in vitro but not by the same magnitude as coadministration of the peptide and these antibiotics. The antimicrobial activities of the conjugates were retained in vivo, with the H-TriA₁-erythromycin conjugate proving a more effective treatment of Klebseilla pneumoniae infections in mice than erythromycin alone or in combination with H-TriA₁.