An expedient synthetic method has been developed for O-glycosidation of 3,4,6-tri- O-acetyl -D- glucal for the synthesis of 2,3-unsaturated O-glycosides using bromodimethylsulfonium bromide (BDMS) as a pre-catalyst through Ferrier rearrangement. Some of the salient features of the present protocol are mild reaction conditions, shor ter reaction time, easy work-up procedure, high α-selectivity and good
开发了一种方便的合成方法,用于 3,4,6-三-O-乙酰基-D-
葡糖苷的 O-糖苷化,以使用
溴二甲基
溴化锍 (B
DMS) 作为预催化剂合成 2,3-不饱和 O-糖苷通过费里尔重排。本协议的一些显着特点是反应条件温和、反应时间较短、处理程序简单、α-选择性高和产率高。