Chemical Synthesis of the Lantibiotic Lacticin 481 Reveals the Importance of Lanthionine Stereochemistry
作者:Patrick J. Knerr、Wilfred A. van der Donk
DOI:10.1021/ja4014024
日期:2013.5.15
prompted an investigation of its importance to biological activity. Here, solid-supported chemical synthesis enabled the total synthesis of the lantibiotic lacticin 481 and analogues containing cross-links with non-native stereochemical configurations. Biologicalevaluation revealed that these alterations abolished the antibacterial activity in all of the analogues, revealing the critical importance of the
Ring-opening reactions for the solid-phase synthesis of nisin lipopeptide analogues
作者:Daniel B. Engelhardt、Bethan L. Donnelly、Jonathan Beadle、Marco J. van Belkum、John C. Vederas
DOI:10.1039/d2ob01526a
日期:——
Three lipopeptide analogues of the lantibiotic nisin A have been synthesised on-resin using Fmoc-SPPS techniques to investigate the structure–activity relationship of the A and B ring of these types of lanthipeptides. Lanthionine and methyllanthionine macrocycles were incorporated using orthogonally protected residues for on-resin cyclisation. Unsaturated dehydroalanine and, for the first time, dehydrobutyrine
已经使用 Fmoc-SPPS 技术在树脂上合成了羊毛硫抗生素乳链菌肽 A 的三种脂肽类似物,以研究这些类型的羊毛硫肽的 A 环和 B 环的结构-活性关系。羊毛硫氨酸和甲基羊毛硫氨酸大环化合物使用正交保护的残基用于树脂上环化。不饱和脱氢丙氨酸和脱氢丁酸首次从其半胱氨酸衍生物在树脂上合成。然而,乳链菌肽的合成或半合成脂肽类似物均未显示出对通常对乳链菌肽敏感的细菌菌株的抑制活性。
Chemical Synthesis and Biological Activity of Analogues of the Lantibiotic Epilancin 15X
作者:Patrick J. Knerr、Wilfred A. van der Donk
DOI:10.1021/ja302435y
日期:2012.5.9
Lantibiotics are a large family of antibacterial peptide natural products containing multiple post-translational modifications, including the thioether structures lanthionine and methyllanthionine. Efforts to probe structure activity relationships and engineer improved pharmacological properties have driven the development of new methods to produce non-natural analogues of these compounds. In this study, solid-supported chemical synthesis was used to produce analogues of the potent lantibiotic epilancin 15X, in order to assess the importance of several N-terminal post-translational modifications for biological activity. Surprisingly, substitution of these moieties, including the unusual N-terminal D-lactyl moiety, resulted in relatively small changes in the antimicrobial activity and pore-forming ability of the peptides.