Novel glycosyl donors 2d, 4d and 6d bearing an ‘acetoxy methoxy’ leaving group have been prepared and their utility is shown by coupling them with alcohols A-G to obtain di- and trisaccharides by use of BF3-Et2O as a promoter.
已制备新型糖苷供体 2d、4d 和 6d,具有“乙酰
氧基-甲
氧基”离去基团,并通过将其与醇 A-G 结合,利用
BF3-Et2O 作为促使剂,展示了它们的实用性,从而获得了二糖和三糖。