glucomannogalactan(with a molar ratio of galactose, mannose and glucose of 3.9:1.9:1.0) with a backbone of (1→2)-linked α-mannopyranose with the every second residue substituted at position 6 by a pentasaccharide branch, composed of four (1→6)-linked β-galactofuranose residues with terminal α-glucopyranose residue attached to the last galactofuranose residue at position 2 、
乙酸酐 、
碘甲烷 生成 1,4,6-tri-O-acetyl-2,3,5-tri-O-methyl-galactitol 、
1,2,5-tri-O-acetyl-3,4,6-tri-O-methyl-D-mannitol 、
1,5-O-di-acetyl-2,3,4,6-tetra-O-methyl-D-glucitol 、
1,2,5,6-tetra-O-acetyl-3,4-di-O-methyl-D-mannitol 、 1,2,4-tri-O-acetyl-3,5,6-tri-O-methyl-galactitol