Abstract Methyl α-carrabioside (13), and its 4′-sulphate (19) and 2, 4′-disulphate (20) have been synthesised via glycosylation of methyl 3, 6-anhydro-2-O-benzyl-α-d- galactopyranoside with 2, 3, 6-tri-O-acetyl-4-O-benzyl-β-d-galactopyranosyl bromide and subsequent partial or complete debenzylation, sulphation, and deprotection of the resulting disaccharide derivatives. Conformational studies have been carried out on 13, 19, and 20 ...
