AuCl<sub>3</sub>-Catalyzed Hemiacetal Activation for the Stereoselective Synthesis of 2-Deoxy Trehalose Derivatives
作者:Robin Jeanneret、Carlo Walz、Maarten van Meerbeek、Sarah Coppock、M. Carmen Galan
DOI:10.1021/acs.orglett.2c02530
日期:2022.9.2
A new practical, catalytic, and highly stereoselective method for directly accessing 1,1-α,α′-linked 2-deoxy trehalose analogues via AuCl3-catalyzed dehydrative glycosylation using hemiacetal glycosyl donors and acceptors is described. The method relies on the chemoselective Brønsted acid-type activation of tribenzylated 2-deoxy hemiacetals in the presence of other less reactive hemiacetals.
描述了一种使用半缩醛糖基供体和受体通过 AuCl 3催化的脱水糖基化直接获得 1,1-α,α'-连接的 2-脱氧海藻糖类似物的实用、催化和高度立体选择性的新方法。该方法依赖于在其他反应性较低的半缩醛存在下,三苯甲基化 2-脱氧半缩醛的化学选择性布朗斯台德酸型活化。