Abstract
The sodium salts of the isomeric methyl α-L-fucopyranoside 2-, 3-and 4-sulfates have been prepared from methyl α-L-fucopyranoside 1. Specific hydroxyl groups, isolated by 4-dimethylaminopyridine-catalyzed tritylation and acetylation of 1, were sulfated by the pyridine: SO3 complex.