Diastereoselective synthesis of β-aryl-C-nucleosides from 1,2-anhydrosugars

The cis opening of glycal epoxides with arylaluminum reagents provides strict stereocontrol in C-glycosylation. beta-Aryl-C-2-deoxynucleosides are obtained from known glycals by an epoxidation - glycosylation - deoxygenation sequence.