Stereocontrolled preparation of cyclic xanthate; a novel synthetic route to 4-thiofuranose and 4′-thionucleoside

Abstract
Optically active cyclic xanthate was prepared by the reaction of an epoxy alcohol with NaH and CS2, and was found to be a useful intermediate for synthesis of 4-thio-2-deoxyribose and 4′-thio-2′-deoxyribonucleoside.