title: [Chemical studies on SC3, a polysaccharide from Salvia chinensis].
abstract: OBJECTIVE
  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.
  
  
  CONCLUSIONS
  SC3 is an complicated acidic polysaccharide, obtained for the first time from the plant.
authors.affiliation: Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
authors.forename: Cui-ping
authors.initials: CP
authors.lastname: Liu
authors.forename: Xue-song
authors.initials: XS
authors.lastname: Wang
authors.forename: Ji-nian
authors.initials: JN
authors.lastname: Fang
mesh_terms: D001089:Arabinose / Q000737:chemistry / Q000302:isolation & purification; D005690:Galactose / Q000737:chemistry / Q000302:isolation & purification; D015394:Molecular Structure; D008970:Molecular Weight; D010946:Plants, Medicinal / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry / Q000302:isolation & purification*; D012210:Rhamnose / Q000737:chemistry / Q000302:isolation & purification; D027544:Salvia / Q000737:chemistry*
chemical_list: D011134:Polysaccharides; D001089:Arabinose; D012210:Rhamnose; D005690:Galactose