作者:Alberto Avenoza、Carlos Cativiela、Francisco Corzana、Jesús M Peregrina、Marı́a M Zurbano
DOI:10.1016/s0957-4166(00)00149-x
日期:2000.6
This report describes the synthesis of enantiomerically pure (2R,3R)-, (2R,3S)-, (2S,3S)- and (2S,3R)-2-amino-3-hydroxy-2-methyl-3-phenylpropanoic acids, four quaternary α-amino acids, using a stereodivergent synthetic route and starting from (S)- and (R)-N-Boc-N,O-isopropylidene-α-methylserinals. The key step involves the asymmetric Grignard additions to the above chiral aldehydes, in which high levels
该报告描述了对映体纯的(2 R,3 R)-,(2 R,3 S)-,(2 S,3 S)-和(2 S,3 R)-2-氨基-3-羟基的合成-2-甲基-3-苯基丙酸,四个季基α-氨基酸,采用立体发散性合成途径,从(S)-和(R)-N- Boc - N,O-异亚丙基-α-甲基丝氨酸开始。关键步骤涉及上述手性醛的不对称格利雅(Grignard)加成,其中观察到高水平的不对称诱导。