A novel polycondensation method for the synthesis of a two-faced β-1,4-glucan

摘要

The stereospecific synthesis of a chitosan derivative repeating 2-azido-3,6-di-O-benzyl-2-deoxy-β-D-glucopyranosyl-(1 -> 4)-3,6-di-O-benzyl-2-deoxy-2-phth-alimido-D-glucopyranose, which has two distinguishing faces, was achieved by polycondensation of the sole starting disaccharide, trichloroacetimidoyl 2-azido-3,6-di-O-benzyl-2-deoxy-β-D-glucopyranosyl-(1 -> 4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-D-glucopyranoside in a short and efficient way.