1-alkylthioalkylation of nucleoside hydroxyl functions and its synthetic applications: a new versatile method in nucleoside chemistry

Treatment of appropriately protected nucleosides with a mixture of acetic acid, acetic anhydride and dialkylsulfoxide was shown to give O-(1-alkylthioalkylated) nucleosides that were oxidized to the corresponding sulfoxides and sulfones, or converted via O-halogenomethyl derivatives to various O-substituted nucleosides.