underwent facile C-Se homolysis to provide the corresponding anomeric radicals, which were trapped with alkenes to give C-glycosides. This provides a general entry to alpha-C-glycosides based on 2-amino-2-deoxy sugars that is also applicable to disaccharide variants.
[反应:见正文]从易得的前体开始,通过一或两个步骤的方法制备衍生自GalNAc,GlcNAc和ManNAc的
硒代糖苷。对异头
硒化物进行轻松的C-Se均质分解,以提供相应的异头自由基,这些自由基被烯烃捕获,得到C-糖苷。这提供了基于2-
氨基-2-脱氧糖的α-C-糖苷的一般入口,其也适用于二糖变体。