Treatment of a variety of protected 2-(trimethylsilyl)ethyl (SE) mono, di and trisaccharide glycosides and hemiacetal sugars with α, α-dichloromethyl methyl ether (DCMME) in the presence of ZnCl2, SnCl4 or FeCl3 in dichloromethane gave their corresponding 1,2-cis glycosyl chlorides in excellent yields.
在
二氯甲烷中存在ZnCl 2,SnCl 4或FeCl 3的情况下,用α,α-二
氯甲基甲基醚(DCMME)处理各种受保护的2-(三甲基甲
硅烷基)乙基(
SE)
单糖,二糖和三糖苷和
半缩醛糖,得到其相应的1,2-顺式糖基
氯化物的收率很高。