波谱学杂志 ›› 1997, Vol. 14 ›› Issue (4): 299-306.

• 研究论文 • 上一篇    下一篇

利用2D NMR研究贝壳杉烷新化合物的化学结构

傅宏征, 林文翰   

  1. 北京医科大学天然药物及仿生药物国家重点实验室, 北京 100083
  • 收稿日期:1997-03-03 修回日期:1997-04-21 出版日期:1997-08-05 发布日期:2018-01-22
  • 通讯作者: 傅宏征,男,34岁,博士,讲师

2D NMR STUDIES ON CHEMICAL STRUCTURE OF A NEW COMPOUND OF KAURAN

Fu Hongzheng, Lin Wenhan   

  1. National Research Laboratories of Natural and Biomimetic Drugs, Beijing Medical University, Beijing 100083
  • Received:1997-03-03 Revised:1997-04-21 Online:1997-08-05 Published:2018-01-22

摘要: 我们从菊科莶属植物腺梗莶Siegesbeckia Pubescens Makino的地上部分分离到一个新的天然产物17-isobuthyloxy-18-hydroxy-kauran-19-cioacid.本文主要报道用1H-1H COSY,13C-1H COSY,NOESY,HMBC,HMQC等技术确定其结构并归属其质子和碳的化学位移.同时用NOESY确定其相对构型.用HMBC确定酰基碳与隔氧相连的碳原子上的氢相关,从而确定酰基的连接位直,也可用于解决其它基团的准确连接位置.

关键词: 贝壳杉烷, 二萜, 2D NMR

Abstract: A New Kauran compound was isolated from the herbs of Siegesbeckia pubascens, named as 17-isobuthyloxy-18-hydroxy-kauran-19-oic acid, all the 1H and 13C NMR chemical shifts of the com-pound were assigned by 1H-1H COSY, 13C-1H COSY, NOESY, HMBC, 2D NMR techniques. Its relative configuration is discussed by NOESY, The connection position of acyl radical in the structure was assigned by HMBC.

Key words: Kauran, Diterpene, 2D NMR