Structural features of a neutral heteropolysaccharide CPB-4 from Cynanchum paniculatum.

Author: Shun-chun WANG ¹ ; Xing-feng BAO ; Ji-nian FANG
Author Information

1. Shanghai Institute of Materia Medica, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
Publication Type:Journal Article
MeSH: Arabinose; isolation & purification; Cynanchum; chemistry; Methylation; Plant Roots; chemistry; Plants, Medicinal; chemistry; Polysaccharides; chemistry; isolation & purification; Rhamnose; isolation & purification; Xylose; isolation & purification
From: China Journal of Chinese Materia Medica 2002;27(2):128-130
CountryChina
Language:Chinese
Abstract:
OBJECTIVETo study the chemical features of CPB-4, a heteropolysaccharide obtained from Cynanchum paniculatum.
METHODSugar composition analysis, methylation analysis, partial hydrolysis and carbon-13 nuclear magnetic resonance were used to determine the sugar composition, linkages, main chain, branch chains and branching points.
RESULTCPB-4 is composed of L-arabinose, L-xylose, L-rhamnose and D-galactose in closely molar ratios of 0.8:0.2:0.2:1.0. Its main chain is comprised of 1, 5 linked galactose and side chains are comprised of terminal xylose, terminal arabinose, oligosaccharide of arabinose and oligosaccharide of arabinose, rhamnose and galactose. The branching points are located at C-6 and C-2 of galactose.
CONCLUSIONCPB-4 is a new heteropolysaccharide from C. paniculatum.