Direct and Stereoselective Synthesis of 1,3-cis-3-Arylsulphonaminodeoxydisaccharides and Oligosaccharides

The 3-aminoglycosides are ubiquitous in biologically important classes of glycoconjugates and naturally occurring oligosaccharides. Despite the rapid growth in the development of synthetic method of 3-amino glycosides, the current state-of-the art suffers from limited substrate scope, low yields, long reaction times, and anomeric mixtures. This work presents a novel direct method for the synthesis of 1,3-cis-3-arylsulphonaminodeoxydisaccharides and oligosaccharides via alpha-selective glycosylation and hydroamination of glycal in a one-pot manner. This efficient multicomponent reaction methodology provides ready access to 1,3-cis-3-arylsulphonaminodeoxydisaccharides and oligosaccharides and allows derivatization by variation of each component.