<i>N</i>-Methylation of Peptides on Selected Positions during the Elongation of the Peptide Chain in Solution Phase
作者:M. Luisa Di Gioia、Antonella Leggio、Angelo Liguori
DOI:10.1021/jo0478959
日期:2005.5.1
and general solution-phase method for the site-specific N-methylation of peptides has been developed. This novel procedure involves synthesis of N-nosyl protected peptides and their subsequent N-methylation with diazomethane. Its efficiency was proved by the successful synthesis of various hindered oligopeptides containing N-methyl amino acid residues with excellent yield and purity. The method is
已经开发了一种用于肽的位点特异性N-甲基化的有效且通用的溶液相方法。这种新颖的方法涉及N-烷基保护的肽的合成及其随后与重氮甲烷的N-甲基化。通过成功合成具有N-甲基氨基酸残基的各种受阻寡肽,具有优异的收率和纯度,证明了其效率。该方法特别吸引人,因为所采用的条件不会引起肽立体中心的任何可检测的外消旋化,并且该方法不需要对甲基化产物进行色谱纯化。另一个优点是该方法与Fmoc溶液相肽合成的兼容性。