A new synthesis of α-methylserine by nucleophilic ring-opening of N-sulfonyl aziridines
作者:Peter Wipf、Srikanth Venkatraman、Chris P. Miller
DOI:10.1016/0040-4039(95)00621-i
日期:1995.5
2-methylglycidol to the corresponding aziridine occurs by Staudinger cyclization of the intermediate azido alcohol. After N-sulfonylation with Ses-Cl and ring-opening with benzyl alcohol, oxidation of the primary alcohol provides N,O-bisprotected α-methylserine directly suitable for repetitive peptide synthesis. This sequence represents a general enantioselective protocol for the synthesis of α-methylserine and other
三苯甲基化的2-甲基缩水甘油向相应的氮丙啶的转化通过中间叠氮基醇的斯托丁格环化而发生。在用Ses-Cl进行N-磺酰化并用苄醇开环后,伯醇的氧化提供了N,O-双保护的α-甲基丝氨酸,直接适合于重复的肽合成。该序列代表用于合成α-甲基丝氨酸和其他α,α-二取代氨基酸的一般对映选择性方案。