Enantioselective Synthesis of <i>anti</i>-β-Substituted γ,δ-Unsaturated Amino Acids: A Highly Selective Asymmetric Thio-Claisen Rearrangement
作者:Zhihua Liu、Hongchang Qu、Xuyuan Gu、Byoung J. Min、Joel Nyberg、Victor J. Hruby
DOI:10.1021/ol801657q
日期:2008.9.18
novel synthesis of optically active anti-beta-substituted gamma,delta-unsaturated amino acids via a thio-Claisen rearrangement has been achieved. A 2,5-diphenylpyrrolidine was used as a C2-symmetric chiral auxiliary to control the stereochemistry, giving good yields and excellent diastereoselectivities and enantioselectivities.
通过硫代-克莱森重排实现了一种新型的光学活性抗 β 取代 γ、δ 不饱和氨基酸的合成。使用 2,5-二苯基吡咯烷作为 C2 对称手性助剂来控制立体化学,获得良好的产率和优异的非对映选择性和对映选择性。