天然产物研究与开发 ›› 2011, Vol. 23 ›› Issue (4): 600-605.

• 研究论文 • 上一篇    下一篇

丹皮多糖PSM2b-A的结构研究

廖洪梅1,2,戴 玲2*   

  1. 1阜阳职业技术学院,阜阳 236031;2安徽大学 生命科学学院,合肥 230039
  • 收稿日期:2010-10-25 出版日期:2011-08-25 发布日期:2011-09-13
  • 基金资助:

    安徽省自然科学基金项目(03043301);安徽大学211工程学术创新团队、安徽省中药研究与开发重点实验室资助

Structure Investigation on PSM2b-A, A Polysaccharide of Moutan Cortex

LIAO Hong-mei1,2, DAI ling2*   

  1. 1FuYang Vocational and Technical Institute, Fuyang 236031, China; 2The School of Life, Anhui University, Hefei 230039, China
  • Received:2010-10-25 Online:2011-08-25 Published:2011-09-13

摘要: 研究了从中药丹皮(Moutan Cortex)中得到的酸性多糖PSM2b-A的化学结构。实验结果表明PSM2b-A由鼠李糖、阿拉伯糖、葡萄糖、半乳糖、甘露糖和少量蛋白质、糖醛酸组成。甲基化分析、部分酸水解、高碘酸氧化和smith降解等化学方法和IR,13C NMR试验进一步表明PSM2b-A为以(1→6)、(1→4)连接为主链的、带有少量分支的结构复杂的杂多糖,在分子间氢键的作用下能形成高级结构。该多糖化学结构为首次报道。

关键词: 丹皮, 多糖, 一级结构, 显微结构

Abstract: The structure of an acidic polysaccharide PSM2b-A extracted from the cortex of Paeonia suffruticosa Andr. has been investigated. The result showed that PSM2b-A was composed of L-Rha, L-Ara, D-Xyl, D-Glc, D-Gal and D-Man containing uronic acid and traces of protein. By using chemical techniques such as methylation analysis, partial acidic hydrolysis, periodate oxidation, Smith degradation and IR, 13C NMR spectroscopy, the structure of PSM2b-A was deduced characteristic of a low branched heteropolysaccharide with a linkage of (1→6), (1→4) as a main chain which could further form into higher structure by means of intermolecular hydrogen bond.

Key words: Moutan Cortex, polysaccharide, primary structure, microscopic structure