Enantioselective synthesis of (S)-2-(Aminomethyl)butanedioic acid using chiral β-alanine α-enolate equivalents
作者:Elena Arvanitis、Majid Motevalli、Peter B. Wyatt
DOI:10.1016/0040-4039(96)00816-7
日期:1996.6
(S)-2-(Aminomethyl)butanedioic acid (6) can been synthesised by stereoselective alkylation of the Na enolates of acyloxazolidinones 1a and 1b with methyl bromoacetate, then oxidation of the vinyl or dimethoxyphenyl substituent to a carboxyl group, followed by Curtius rearrangement and deprotection. The absolute configuration of 6 has been correlated with that of (S)-1-phenylethylamine by a combination
(S)-2-(氨基甲基)丁二酸(6)可通过用溴乙酸甲酯对酰基恶唑烷二酮1a和1b的Na烯酸酯进行立体选择性烷基化,然后将乙烯基或二甲氧基苯基取代基氧化为羧基,然后再进行库尔修斯重排来合成(S)-2-(氨基甲基)丁二酸(6)和脱保护。通过结晶学和化学方法的组合,已经将6的绝对构型与(S)-1-苯基乙胺的绝对构型相关联。