Partial acid hydrolysis of Abelmoschus-mucilage M, a representative mucilage isolated from the roots of Abelmoschus manihot MEDICUS, led to the isolation of three oligosaccharides. Analysis of components, reduction and methylation, and partial degradation studies showed that these oligosaccharides are O-α-(D-galactopyranosyluronic acid)-(1→2)-L-rhamnopyranose, O-β-(D-glucopyranosyluronic acid)-(1→3)-O-α-(D-galactopyranosyluronic acid)-(1→2)-L-rhamnopyranose, and O-β-(D-glucopyranosyluronic acid)-(1→3)-O-α-(D-galactopyranosyluronic acid)-(1→2)-O-α-L-rhamnopyranosyl-(1→4)-[O-β-(D-glucopyranosyluronic acid)-(1→3)]-O-α-(D-galactopyranosyluronic acid)-(1→2)-L-rhamnopyranose. The structural features of the polysaccharide moiety in the mucilage are discussed.
partial acid hydrolysis, reduction and methylation analysis, Abelmoschus manihot, Abelmoschus-mucilage M, isolation of three oligosaccharides, proton magnetic resonance, structures of three oligosaccharides, structural feature of polysaccharide moiety
Journal NLM ID: 0377775WWW link: http://ci.nii.ac.jp/naid/110003623705Publisher: Pharmaceutical Society Of Japan
Institutions: Kyoritsu College of Pharmacy, Tokyo, Japan
Methods: GLC-MS, IR, partial acid hydrolysis, TLC, GLC, methylation analysis, paper electrophoresis, PPC, PMR, reduction analysis
Found