C-glycosides: A stereoselective synthesis of α- and β-C-galactosides with glycosyl dianions

Article abstract of DOI:10.1016/S0040-4039(98)01676-1

α- or β-C-galactosides can be obtained from the configurationally stable anomeric glycosyl dianions which are prepared by transmetallation of a tin compound or by reductive lithiation of a chloride. Different electrophiles react selectively at the anomeric center.