Stereoselective Synthesis of 1,2-<i>cis</i>-<i>N</i>-Glycosides by the<i>N</i>-Bromosuccinimide Promoted Reaction of Thioglycosides with Silylated Pyrimidme Bases
The coupling of O-benzylated 1-thioglycosides, derived from d-glucose, d-mannose, d-ribose, d-xylose, and d-arabinose, with silylated pyrimidme bases by activation with N-bromosuccinimide uniformly afforded the corresponding 1,2-cis-N-glycosides with good selectivity.