One-Pot, Highly Stereoselective Synthesis of Dithioacetal-α,α-Diglycosides.

A one-step access to dithioacetal-α,α-diglycosides is reported. The synthetic strategy is based on the thioacetalization of aldehydes or ketones via highly stereoselective ring-opening of 1,6 anhydrosugars with bis(trimethylsilyl)sulfide.