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菟丝子多糖H3的研究

王展, 刘翠平, 方积年*

  

  1. 中国科学院上海生命科学研究院上海药物研究所, 上海 200031
  • 收稿日期:2001-03-09 修回日期:2001-04-23 出版日期:2001-06-15 发布日期:2001-06-15
  • 通讯作者: 方积年*

H3, An Acidic Polysaccharide from Cuscuta chinensis

Wang Zhan, Liu Cuiping, Fang Jinian*   

  1. Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031
  • Received:2001-03-09 Revised:2001-04-23 Online:2001-06-15 Published:2001-06-15
  • Contact: Fang Jinian*

摘要: 首次从中药菟丝子(Cuscuta chinedsis Lam.) 中得到一均一酸性多糖H3, 并采用化学及光谱方法对其结构特征进行了研究。结果表明该多糖为一多分枝的复杂多糖, 1,6-linked-β-D Galp, 1,4-linked-β-D Galp, 1,4-linked-β-D GalA, 1,3, 6-linked-β-D Galp 1,2,4-linked Rhap 组成, 分枝点位于1,2,4-linked Rhap O-2 O-4以及1,3,6-linked-β-D Galp O-3, 并以1-linked Galp 为末端。侧链由1-linked Araf, 1,5-linked Araf 1,3,5-linked Araf 构成, 并连接于主链的1,6-linked Galp O-3位。

关键词: 菟丝子, 多糖, NMR, 甲基化分析, 部分酸水解

Abstract: H3, a homogeneous acidic polysaccharide was obtained from the seeds of Cuscuta chinensis Lam. Its structure was characterized for the first time by chemical and spectroscopic methods to be a highly branched heteropolysaccharide with mean molecular weight of more than 1×106. It was composed of 1,6-linked-β-D Galp, 1,4-linked-β-D Galp, 1,4-linked-β-D GalA, 1,3,6-linked-β-D Galp and 1,2,4-linked Rhap, with branching points at O-2 or O-4 of 1,2,4-linked Rhap and O-3 of 1,3,6-linked-β-D Galp. Its side chains included 1-linked Araf, 1,5-linked Araf and 1,3,5-linked Araf at O-3 of 1,6-linked Galp in the main chain.

Key words: Cuscuta chinensis, Convolvulaceae, Polysaccharides, NMR, Methylation analysis, Partial acid hydrolysis

Supporting: *First published in Chinese in Acta Pharmaceutica Sinica, 2001, 36(3) 192.