波谱学杂志 ›› 1991, Vol. 8 ›› Issue (1): 19-28.

• 研究论文 • 上一篇    下一篇

NOE和二维NMR技术在倍半萜化学位移归属中的应用

桑鸿1, 汪汉卿1, 涂永强2   

  1. 1. 中国科学院兰州化学物理研究所;
    2. 兰州大学化学系
  • 收稿日期:1989-12-25 修回日期:1990-04-28 出版日期:1991-03-05 发布日期:2018-01-20

APPLICATION OF NOE AND 2D NMR SPECTROSCOPY TO THE ASSIGNMENT OF 1H AND 13C CHEMICAL SHIFTS IN SESQUI-TERPENOIDS

Sang Hong1, Wang Hanging1, Tu Yongqiang2   

  1. 1. Lanzhou Institute of Chemical Physics, Academia Sciences, Lanzhou, Gansu, P. R. China;
    2. Deportment of Chemistry, Lanzhou University, Lanzhou, Gansu, P. R. China
  • Received:1989-12-25 Revised:1990-04-28 Online:1991-03-05 Published:2018-01-20

摘要: 本文用NOE和二维核磁共振技术-COSY,C-H化学位移相关,C-H远程化学位移相关(COLOC),DEPT对二个倍半萜分子的立体化学结构进行了研究,并对其1H和13C化学位移进行了归属。

关键词: 倍半萜, 二维NMR, NOE

Abstract: The stereochcmical and structural analysis of two sesquiterpenoids was carried out using nuclear magnetic resonance spectroscopy. Several methods, including 1H-1H two-dimensional shift correlation spectroscopy, 13C-1H two-dimensional shift correlation spectroscopy, COLOC (COrrelation spectroscopy via LOng range Coupling), DEPT (Distortionless Enhancement by Polarization Transfer) were used for chemical shift assignment and configurational analysis. Nuclear Overhauser Effect Spectroscopy was used to establish the stereochemistry. This investigation demonstrates the power of two-dimensional NMR techniques and the Nuclear Overhauser Effect (NOE) in the structural determination of natural products.

Key words: Sesquiterpenoid, 2D NMR, NOE