Incorporation of Acid-Labile Masking Groups for the Traceless Synthesis of C-Terminal Peptide α-Ketoacids
作者:Frédéric Thuaud、Florian Rohrbacher、André Zwicky、Jeffrey W. Bode
DOI:10.1021/acs.orglett.6b01692
日期:2016.8.5
An optimized protocol for the masking of α-ketoacids with acid-labile cyclic acetal protecting groups is reported. Unlike prior approaches, these new conditions allow the synthesis of protected α-ketoacids bearing aromatic, hindered alkyl, and protected polar side chains. Attachment to a Wang-type linker and solid support provides a resin that delivers fully unprotected C-terminal peptide α-ketoacids
报道了用酸不稳定的环缩醛保护基团掩蔽α-酮酸的优化方案。与现有方法不同,这些新条件允许合成带有芳族,受阻烷基和受保护的极性侧链的受保护的α-酮酸。与Wang型接头和固体支持物的连接提供了一种树脂,该树脂在树脂裂解后会释放出完全未保护的C端肽α-酮酸。这些肽是使用α-酮酸-羟胺连接进行化学蛋白质合成的关键原料。