title: Synthesis of p-nitrophenyl 6-O-(2-acetamido-2-deoxy-beta-d-glucopyranosyl)-beta-D-galactopyranoside and p-nitrophenyl O-beta-D-galactopyranosyl-(1 linked to 3)-O-(2-acetamido-2-dexoy-beta-D-glucopyranosyl)-(1 linked to 6)-beta-D-galactopyranoside.
abstract: Condensation of 2-methyl-(3,4,6-tri-O-acetyl-1,2-dideoxy-alpha-D-glucopyrano)-[2',1':4,5]-2-oxazoline with p-nitrophenyl 2,3-di-O-acetyl-beta-D-galactopyranoside (4), followed by saponification of the resulting disaccharide derivative, produced p-nitrophenyl 6-O-(2-acetamido-2-deoxy-beta-D-glucopyranosyl)-beta-D-galactopyranoside as a crystalline compound. Reaction of 2-methyl-[4,6-di-O-acetyl-1,2-dideoxy-3-O-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-alpha-D-glucopyrano]-[2',1':4,5]-2-oxazoline with 4 in a similar reaction-sequence provided the title trisaccharide compound.
mesh_terms: D004187:Disaccharides / Q000138:chemical synthesis; D005697:Galactosides / Q000138:chemical synthesis*; D006026:Glycoside Hydrolases; D006027:Glycosides / Q000138:chemical synthesis*; D009682:Magnetic Resonance Spectroscopy; D008722:Methods; D009904:Optical Rotation; D013055:Spectrophotometry, Infrared; D013329:Structure-Activity Relationship
chemical_list: D004187:Disaccharides; D005697:Galactosides; D006027:Glycosides; D006026:Glycoside Hydrolases