N-Glycosyl asparagines were synthesized by a mild photochemical coupling method in which a photoreactive amide of an aspartic acid’s β-carboxyl group is condensed with an aminosaccharide. Upon excitation, the γ-carbon becomes susceptible to nucleophilic attack and the obtained N-glycosyl asparagines, which may be useful building blocks for the synthesis of N-glycopeptides and neoglycopeptides, are generated in good yields.
N-糖苷
天冬氨酸是通过一种温和的光
化学耦合方法合成的,该方法中,
天冬氨酸的β-羧基的光反应酰胺与
氨基糖发生缩合。在激发后,γ-碳变得易于受到亲核攻击,所得的N-糖苷
天冬氨酸可以作为合成N-糖肽和新糖肽的有用构件,并且产率良好。