Preparation of disaccharides having a β-D-mannopyranosyl group from N-phthaloyllactosamine derivatives by double or triple SN2 substitution

Article abstract of DOI:10.1016/0008-6215(90)84225-J

Condensation of 1,2,3,4,6-penta-O-acetyl-β-D-galactopyranose with methyl 3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranoside, followed by alkaline methanolysis, gave a derivative of lactosamine that has an unsubstituted β-D-galactopyranosyl group.Tr