Novel Synthesis of HEX-2-Enopyranosides

Abstract
The usefulness of thioglycosides, particularly 2-thiopyridyl glycosides2 having a suitable activating group at the anomeric center for glycosylation, has been well documented. Glycosylations of 2-thiopyridyl 4,6-di–acetyl-2,3-dideoxy-α-D-erythro-hex-2-enopyranoside (1) with aglycones to furnish the corresponding 2,3-unsaturated-∼-glycosides have been studied. The latter compounds are suitable for the preparation of 2,3-dideoxy-sugar glycosides.