Studies on the synthesis of 1,2-cis pentofuranosides from S-glycofuranosyl dithiocarbamates, dithiocarbonates and phosphorodithioates

The selectivity in the synthesis of 1,2-cis glycofuranosides from dithiocarbonates, dithiocarbamates and phosphorodithioates is improved by combined use of silver triflate and catalytic amount of hexamethylphosphoramide (HMPA) under mild conditions.