Facile, Efficient, and Enantiospecific Syntheses of 1,1‘-<i>N</i>-Linked Pseudodisaccharides as a New Class of Glycosidase Inhibitors
作者:Tony K. M. Shing、Connie S. K. Kwong、Aries W. C. Cheung、Stanton H.-L. Kok、Zhifeng Yu、Jianmei Li、Christopher H. K. Cheng
DOI:10.1021/ja0470158
日期:2004.12.1
This article describes an efficient synthesis of a potent trehalase inhibitor, 1,1'-N-linked pseudodisaccharide 1 (consisting of two valienamines), in 14 steps with an overall yield of 12% and a first synthesis of 2 (consisting of two 2-epi-valienamines) in 15 steps with an overall yield of 24% from (-)-quinic acid. The synthesis involves a stereospecific palladium-catalyzed coupling reaction between
本文描述了一种有效的海藻糖酶抑制剂 1,1'-N-连接假二糖 1(由两个缬氨胺组成)的有效合成,分 14 个步骤,总产率为 12%,第一次合成 2(由两个 2 -epi-valienamines) 分 15 步进行,(-)-奎尼酸的总产率为 24%。该合成涉及烯丙基胺和烯丙基氯之间的立体定向钯催化偶联反应作为关键步骤。丙酮保护基团被证明是最好的羟基保护基团,与钯催化的烯丙基胺化反应相容,该反应可提供高产率的 1,1'-N-连接假二糖,同时消除二烯副产物的量最少。