Asymmetric Synthesis of syn-(2R,3S)- and anti-(2S,3S)-Ethyl Diamino-3-phenylpropanoates from N-(Benzylidene)-p-toluenesulfinamide and Glycine Enolates
摘要:
Addition of differentially N-protected glycine enolates to enantiopure sulfinimines affords syn- and anti-alpha,beta-diamino esters with high diastereoselectivities and good yields.
Asymmetric Synthesis of syn-(2R,3S)- and anti-(2S,3S)-Ethyl Diamino-3-phenylpropanoates from N-(Benzylidene)-p-toluenesulfinamide and Glycine Enolates
摘要:
Addition of differentially N-protected glycine enolates to enantiopure sulfinimines affords syn- and anti-alpha,beta-diamino esters with high diastereoselectivities and good yields.
Sulfinimine-derived 2,3-diamino esters in the asymmetric synthesis of piperidine (2S,3S)-(+)-CP-99,994
作者:Franklin A. Davis、Yanfeng Zhang、Danyang Li
DOI:10.1016/j.tetlet.2007.08.132
日期:2007.10
Sulfinimine-derived, differentially protected, 2,3-diamino esters are useful building blocks for the asymmetric synthesis of heterocycles and is illustrated by an efficient synthesis of amino piperidine (+)-CP-99,994. (C) 2007 Elsevier Ltd. All rights reserved.