Regioselective and stereoselective glycosylations utilizing organoboron compounds

Development of regio- and stereoselective glycosylations leading to a specific hydroxyl group among several free hydroxyl groups is a challenging and long-standing research subject in carbohydrate chemistry. In this context, several efficient regio- and stereoselective glycosylation methods utilizing organoboron reagents, which can bind reversibly to cis-1,2- or 1,3-diols under mild conditions, have been reported. In this focused review article, several organoboron-mediated regio- and stereoselective glycosylations are described, including recently developed methods.