Synthesis of enantiomerically enriched β,γ-unsaturated-α-amino acids

被引:32
作者
Rose, NGW [1 ]
Blaskovich, MA [1 ]
Wong, A [1 ]
Lajoie, GA [1 ]
机构
[1] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
vinylglycines; olefination; alpha-amino acid;
D O I
10.1016/S0040-4020(00)01146-7
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A variety of enantiomerically enriched beta,gamma -unsaturated-alpha -amino acids are synthesized by olefination of a Cbz-protected serine aldehyde equivalent, readily prepared from serine. A cyclic ortho ester protecting group is employed to minimize racemization. The deprotected amino acids are obtained in good yield, ranging from 70-95% ee, with double-bond geometry determined by the type of Wittig reagent used. Isotopically labeled side chains are readily introduced by this procedure, and free gamma-C-13-vinylglycine was prepared in 44% yield from the protected serine aldehyde synthon. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1497 / 1507
页数:11
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