波谱学杂志 ›› 2007, Vol. 24 ›› Issue (3): 249-260.

• 研究论文 • 上一篇    下一篇

应用2D NMR技术研究罗汉果醇及其苷的结构

杨秀伟;张建业   

  1. 北京大学 药学院,天然药物及仿生药物国家重点实验室,北京 100083
  • 收稿日期:2007-01-15 修回日期:2007-03-16 出版日期:2007-09-05 发布日期:2009-12-05
  • 通讯作者: 杨秀伟

NMR Structural Elucidation of Mogrol and Its Glycosides

YANG Xiu-wei;ZHANG Jian-ye   

  1. The State Key Laboratory of Natural & Biomimetic Drugs,School of Pharmaceutical Sciences,Peking University,Beijing 100083,China
  • Received:2007-01-15 Revised:2007-03-16 Online:2007-09-05 Published:2009-12-05
  • Contact: Yang Xiu-wei

摘要: 从传统中药罗汉果中分离得到一系列三萜皂苷类化合物,其苷元为罗汉果醇,应用1D和2D NMR脉冲梯度场反相技术(gCOSY,gNOESY,gHMQC,gHMBC) 研究了罗汉果醇及其苷的结构,对其碳氢NMR信号进行了全归属,应用gNOESY技术研究了罗汉果醇的立体构型,并探讨了取代基对苷元质子和碳化学位移的影响.

关键词: 核磁共振, 归属, 结构, 2D NMR, 罗汉果醇, 罗汉果皂苷, 罗汉果

Abstract: Mogroside Ⅲ was isolated from the fruit of Momordica grosvenori Swingle[Siraitia grosvenorii(Swingle) C. Jeffery]. Mogrol (9β-methyl-19-norlanost-5-ene-3β,11α,24β, 25-tetrol) was derived from mogroside Ⅲ by mild enzymatic hydrolysis. One-dimensional and two-dimensional NMR(including gCOSY,gNOESY,gHSQC and gHMBC) techniques were employed to assign the chemical shifts and elucidate the structures of the compounds. The effects of the substitutent groups on the 1H and 13C chemical shifts of the mogroside were also discussed.

Key words: NMR, structure, mogrol, mogrosides, Momordica grosvenori