Enantioselective solution- and solid-phase synthesis of glutamic acid derivatives via Michael addition reactions
作者:Martin J. O'Donnell、Francisca Delgado、Esteban Domı́nguez、Jesús de Blas、William L. Scott
DOI:10.1016/s0957-4166(01)00116-1
日期:2001.4
base ester derivatives to Michael acceptors either in solution (56–89% e.e.) or on solid-phase (34–82% e.e.) gave optically active unnatural α-amino acid derivatives. The reaction was conducted in the presence of chiral, non-racemic quaternary salts derived from the cinchona alkaloids using neutral, non-ionic phosphazene bases.
在溶液中(56-89%ee)或固相(34-82%ee)上的Schiff碱酯衍生物的对映体选择性共轭加成反应,得到光学活性的非天然α-氨基酸衍生物。使用中性非离子磷腈碱,在衍生自金鸡纳生物碱的手性,非外消旋季盐存在下进行反应。