Abstract
β-L-2′, 3′-Dideoxy- and L-2′, 3′-didehydro-2′, 3′-dideoxy purine nucleosides have been synthesized via a highly stereoselective method of glycosylation by the condensation of L-2-(phenylseienyl)-2, 3-dideoxyribose derivative with silylated heterocyclic base.