Peptide coupling of unprotected amino acids through in situ p-nitrophenyl ester formation
作者:Paul Gagnon、Xicai Huang、Eric Therrien、Jeffrey W. Keillor
DOI:10.1016/s0040-4039(02)01840-3
日期:2002.10
series of dipeptides and tripeptides were prepared via an activation–coupling method involving the in situ formation of a p-nitrophenyl ester of an (N-protected) amino acid, followed by coupling with an unprotected amino acid in partially aqueous solutions. The resulting peptide is easily isolated by precipitation. In general, the yields obtained are good to excellent and racemization is minimal. This
通过活化偶联方法制备了一系列的二肽和三肽,该方法包括原位形成(N保护的)氨基酸的对硝基苯基酯,然后在部分水溶液中与未保护的氨基酸偶联。容易通过沉淀分离得到的肽。通常,所获得的收率良好至极好,外消旋化作用极小。就其简单性和缺乏强制性的侧链保护/脱保护步骤而言,该方法是特别有利的。