波谱学杂志

• 研究简报 • 上一篇    下一篇

2D NMR技术在多季碳二萜结构确定中的应用

师彦平1,吴亲娟1,Abimael D. Rodríguez2   

  1. 1.中国科学院兰州化学物理研究所,兰州 730000;  2.Department of Chemistry, Uni versity of Puerto Rico, P.O.Box 23346, Río Piedras, Puerto Rico 00931-3346, USA
  • 收稿日期:2002-03-11 修回日期:2002-04-04 出版日期:2002-12-05 发布日期:2002-12-05
  • 作者简介:师彦平(1965-),男,甘肃渭源人,博士,研究员,主要从事天然药物化学和波谱分析.
  • 基金资助:

    中国科学院“百人计划”基金资助项目(2000年).

STRUCTURE ELUCIDATION OF ELISABATIN B WITH QUATERNARY CARBONS BY 2D NMR SPECTROSCOPY

SHI Yan-ping1, WU Qin-juan1, RODRIGUEZ Abimael D2   

  1. 1.Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou  730000, China;
    2.Department of Chemistry, University of Puerto Rico, P.O.Box 23346,  Río Piedras, Puerto Rico 00931-3346, USA
  • Received:2002-03-11 Revised:2002-04-04 Online:2002-12-05 Published:2002-12-05
  • Supported by:

    中国科学院“百人计划”基金资助项目(2000年).

摘要:

应用二维核磁共振技术(2D NMR:1H-1H COSY、HMQC、HMBC), 尤其是HMBC谱准确归属了多季碳二萜伊丽莎白素B(Elisabatin B)的1H,13C信号,并经与已报道的数据比较,进一步明确指定了11个季碳的化学位移. 以伊丽莎白素B为例,较系统阐明了几种二 维核磁共振技术在天然产物结构确定中的作用和方法.

关键词: 二维核磁共振, 波谱分析, 伊丽莎白素B

Abstract:

2D NMR (1H-1H COSY, HMQC and HMBC) methods, among which the HMBC metho d was the most important, were used to elucidate the structure of Elisabatin B ( i.e, diterpene with 11 quaternary carbons). The 1H and 13C chemi cal shifts were  assigned. Compared with the results reported in reference, the chemical sh if ts of 11 more quaternary carbons were determined. The results of this study sugg est that the 2D NMR techniques can be applied to and are useful in structural el ucidation of natural products.

Key words: 2D NMR, Spectroscopic analysis, Elisabatin B

中图分类号: