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[摘要]：for protecting group free synthesis of O-glycosides, glycosyl azides, and oxazolines. Mono- and disaccharides contg. a reducing terminal N-acetylglucosamine residue were condensed with p-toluenesulfonylhydrazide to give the desired b-D-pyranose donors. These donors can be activated with NBS and then glycosidated with the desired alc. or transformed to the oxazoline or glycosyl azide. |
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