N-Methyl-phenacyloxycarbamidomethyl (Pocam) group: a novel thiol protecting group for solid-phase peptide synthesis and peptide condensation reactions
作者:Hidekazu Katayama、Yoshiaki Nakahara、Hironobu Hojo
DOI:10.1039/c1ob05253e
日期:——
In the so-called thioester method for the condensation of peptide segments, protecting groups for amino and thiol groups are required for chemoselective ligation. In this study, we developed a novel thiol protecting group, N-methyl-phenacyloxycarbamidomethyl (Pocam). We used it for protection of cysteine side chains, and synthesized Pocam-containing peptides and peptide thioesters. These were condensed
在用于肽段的缩合的所谓硫酯方法中,化学选择性连接需要氨基和硫醇基的保护基。在这项研究中,我们开发了一种新型的硫醇保护基团,即N-甲基-苯甲酰氧基氨基甲酰氨基甲基(Pocam)。我们将其用于保护半胱氨酸侧链,并合成了含有Pocam的肽和肽硫酯。通过硫酯法将它们冷凝。缩合反应后,通过Zn / AcOH处理裂解Pocam基团。同时,用于保护赖氨酸侧链的叠氮基也被转化为氨基,表明该保护基策略将肽缩合反应后的去保护反应简化为仅一步。