SYNTHESIS OF 6-O-(6-O-β-D-GALACTOPYRANOSYL-β-D-GALACTOPYRANOSYL)-D-GALACTOPYRANOSE BY USE OF 2,3,4-TRI-O-ACETYL-6-O-(CHLOROACETYL)-α-D-GALACTOPYRANOSYL BROMIDE, A KEY INTERMEDIATE FOR THE SOLID-PHASE SYNTHESIS OF β-(1->6)-LINKED D-GALACTOPYRANANS

Article abstract of DOI:10.1016/S0008-6215(00)85250-7

2,3,4-Tri-O-acetyl-6-O-(chloroacetyl)-α-D-galactopyranosyl bromide (5) has been prepared.When condensed with 1,2,3,4-tetra-O-acetyl-D-galactopyranose, it yielded 1,2,3,4-tetra-O-acetyl-6-O-<2,3,4-tri-O-acetyl-6-O-(chloroacetyl)-β-D-galactopyranosyl>-D-gal