作者:Fernando Formaggio、Marco Crisma、Claudio Toniolo、Cristina Peggion
DOI:10.1002/ejoc.201300050
日期:2013.6
Replacement of a peptide bond with its thioamide surrogate is a classical method for the generation of a peptidomimetic with altered spectroscopic, conformational, physicochemical, and biological properties. In this context, we synthesized short series of terminally protected homo-α-oligopeptides based on the α-amino acids Gly, Ala, and Nle, as well as their corresponding fully thioamidated analogues
用硫代酰胺替代物替换肽键是一种经典方法,用于生成具有改变的光谱、构象、物理化学和生物学特性的肽模拟物。在这种情况下,我们基于 α-氨基酸 Gly、Ala 和 Nle 以及它们相应的完全硫代酰胺化类似物合成了短系列的末端保护的同型-α-寡肽。后一种化合物的制备是第一次通过直接硫化其氧化前体以单步方式实现。使用 X 射线衍射分析和 NMR 光谱,我们还能够确认硫代酰胺化的 α-氨基酸残基可以很容易地采用折叠或完全扩展的构象。