Asymmetric Synthesis; XXXVII: Synthesis of 2,6-Disubstituted Piperazines from Chiral Non-Racemic Lactams
作者:Vincent Schanen、Marie-Pierre Cherrier、Sebastião Jose de Melo、Jean-Charles Quirion、Henri-Philippe Husson
DOI:10.1055/s-1996-4299
日期:1996.7
General and convenient syntheses of optically active 2,6-disubstituted piperazines are described. The method is based on diastereoselective alkylation of lactam 8 derived from (R)-(-)-phenylglycinol followed by a regio- and diastereoselective functionalisation of carbamates 10c and 10d. This procedure allowed the preparation of new α-amino acids 15 and 16.
报道了光学活性2,6-二取代哌嗪的通用且便捷的合成方法。该方法基于源自(R)-(-)-苯基甘醇的内酰胺8的非对映选择性烷基化,随后进行氨基甲酸酯10c和10d的区域选择性和非对映选择性功能化。该过程使得合成新的α-氨基酸15和16成为可能。