New Synthetic Methods and Reagents for Complex Carbohydrates. VIII. Steroselective α- and β-Mannopyranoside Formation from Glycosyl Dimethylphosphinothioates with the C-2 Axial Benzyloxyl Group

Article abstract of DOI:10.1246/bcsj.67.1359

The reactions of mannopyranosyl dimethylphosphinothioates and alcohols using silver perchlorate as an activator in the presence of molecular sieves 4A in benzene at room temperature gave the 1,2-trans-α-mynnopyranosides in good yields.On the other hand, 1