Diastereoselective alkylation of sultam-derived amino acid aldimines preparation of Cα-methylated amino acids
作者:Mimoun Ayou、Gérard Chassaing、Albert Loffet、Solange Lavielle
DOI:10.1016/0040-4039(95)00683-4
日期:1995.6
Alkylation of Schiff bases 2 derived from 4-chlorobenzaldehyde and sultam-derived amino acids 1 gave crystalline diastereomers 3 which after deprotection and re-crystallization, if necessary, afforded in good yield enantiomerically pure Cα′-methylated amino acid (ex: αMePhe, αMeLeu, αMeMet).
衍生自4-氯苯甲醛和源自杜鹃花的氨基酸1的席夫碱2的烷基化生成结晶性非对映异构体3,将其脱保护并重结晶后,如有必要,可提供高收率的对映体纯Cα'-甲基化氨基酸(例如:αMePhe,αMeLeu ,αMeMet)。