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[Chemical studies on SC3, a polysaccharide from Salvia chinensis]
Cui-ping Liu1, Xue-song Wang, Ji-nian Fang
1Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
Aim:
To study the chemical structure of SC3, an acidic polysaccharide from Salvia chinesis.
Methods:
Based on chemical (including sugar composition analysis, methylation analysis, uronic acid reduction and partial acid hydrolysis) and spectral analysis (IR, NMR, ESI-MS), the structural characterization of SC3 was investigated.
Results:
SC3 was composed Rha, Ara, Gal and GalA, with its mean molecular weight of 7.7 x 10(4). By means of methylation analysis, partial acid hydrolysis, NMR and ESI-MS spectrum, the linkages and sequence information of SC3 were obtained.
Conclusion:
SC3 is an complicated acidic polysaccharide, obtained for the first time from the plant.