申请人:The Trustees of Princeton University
公开号:US06388059B1
公开(公告)日:2002-05-14
A method for forming a glycosidic linkage by: (a) contacting a glycoside bearing an anomeric sulfoxide group with a compound bearing a free hydroxyl group in the presence of an organic acid anhydride and a scavenger of sulfenyl esters; and (b) allowing a glycosylation reaction to proceed under conditions effective to produce the glycosidic linkage. In a preferred embodiment of the invention, the glycoside bearing an anomeric sulfoxide group is added to a mixture of the other reactants. In another preferred embodiment of the invention, a Lewis acid is also present in the reaction mixture.
This invention is further directed to a method for forming a glycosidic linkage by: (a) forming a solution comprising: a compound bearing a free hydroxyl group, and an organic acid anhydride; (b) adding to the solution a glycoside bearing an anomeric sulfoxide group; and (c) allowing a glycosylation reaction to proceed under conditions effective to produce the glycosidic linkage. In a preferred embodiment of the invention, a Lewis acid is present in the solution.
通过以下方法形成糖苷键:(a) 在有机酸酐和硫醚酯清除剂存在下,将带有顶夫氧化物基团的糖苷与带有自由羟基团的化合物接触;和(b) 在有效条件下使糖基化反应进行,以产生糖苷键。在本发明的一种首选实施方式中,带有顶夫氧化物基团的糖苷被添加到其他反应物的混合物中。在本发明的另一种首选实施方式中,反应混合物中还存在一种路易斯酸。本发明还涉及通过以下方法形成糖苷键:(a) 形成包括:带有自由羟基团的化合物和有机酸酐的溶液;(b) 向溶液中添加带有顶夫氧化物基团的糖苷;和(c) 在有效条件下使糖基化反应进行,以产生糖苷键。在本发明的一种首选实施方式中,溶液中存在一种路易斯酸。