作者:Valérie Boucard、Hélène Sauriat-Dorizon、François Guibé
DOI:10.1016/s0040-4020(02)00795-0
日期:2002.9
new access to enantiopure (Z)-ethylenic pseudopeptides, starting from the chiral pool of amino acids and enantiopure 2-substituted-but-3-enoic acids is proposed and illustrated by the syntheses of the (Z)-ethylenic pseudopeptidic analogs of l-Phe-l-Phe, l-Phe-d-Phe, l-Phe-l-Val, l-Phe-d-Val and racemic (ll,dd) and (ld,dl) (phenyl)Gly-Phe. The key-steps of these syntheses are a ring-closing metathesis
从氨基酸和对映体纯2-取代-丁-3-烯酸的手性库开始,提出了一种新的对映纯(Z)-烯类假肽的途径,并通过I的(Z)-烯类伪肽类似物的合成进行了说明。-Phe-1-Phe,L-Phe-d-Phe,L-Phe-1-Val,L-Phe-d-Val和外消旋(ll,dd)和(ld,dl)(苯基)Gly-Phe。这些合成的关键步骤是由Grubbs的钌烷基炔烃络合物在二乙烯酰胺上催化的闭环复分解反应,以及在温和条件下通过中间形成环状酰亚胺,水解裂解所得的二氢吡啶酮。