Enantioselective synthesis of β-amino acids. 7. Preparation of enantiopure α-substituted β-amino acids from 1-benzoyl-2(S)-tert-butyl-3-methylperhydropyrimidin-4-one.1,2
作者:Eusebio Juaristi、Delia Quintana、Margarita Balderas、Enrique García-Pérez
DOI:10.1016/0957-4166(96)00278-9
日期:1996.8
Inexpensive natural α-amino acid L-asparagine was efficiently converted to either (R)- or (S)-α-alkylated β-amino acids in enantiomerically pure state. The key intermediate in this protocol is the enantiopure N,N-acetal pyrimidinone (S)-1, a masked chiral derivative of β-alanine.
廉价的天然α-氨基酸L-天冬酰胺被有效地转化为对映体纯态的(R)-或(S)-α-烷基化的β-氨基酸。该方案中的关键中间体是对映体N,N-乙缩醛嘧啶酮(S)-1 ,一种掩盖的β-丙氨酸手性衍生物。