波谱学杂志

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棉酚异构体动态平衡的2D NMR研究

沈颖林,杨圣华,应卫,阎肖华,马学毅*   

  1. 兰州大学应用有机化学国家重点实验室,兰州大学化学化工学院,甘肃兰州 730000
  • 收稿日期:2003-05-06 修回日期:2003-05-26 出版日期:2003-12-05 发布日期:2003-12-05
  • 作者简介:沈颖林(1972-),女,甘肃景泰人,博士研究生,有机化学专业 *通讯联系人:马学毅,E-mail:maxueyi@lzu.edu.cn,电话:(0931)3937749

DYNAMIC EQUILIBRIUM BETWEEN THE TAUTOMERS OF GOSSYPOL STUDIED BY 2D NMR

SHEN Ying-lin, YANG Sheng-hua, YING Wei,  YAN Xiao-hua,  MA Xue-yi*   

  1. National Laboratory of Applied Organic Chemistry, Department of Chemistry Lanzhou University, Lanzhou 730000, China
  • Received:2003-05-06 Revised:2003-05-26 Online:2003-12-05 Published:2003-12-05
  • About author:*Correspondence author: Ma Xue-yi,E-mail:maxueyi@lzu.edu.cn,Tel:(0931)3937749.

摘要:

研究发现棉酚3种异构体在CHCl3中同时存在着动态平衡,采用1H-1H COSY,1H-13C HMQC以及HMBC等2D NMR技术对这一新的现象进行了确证,并对它们的1H和13C NMR做了全归属.

关键词: 核磁共振, 棉酚, 动态平衡, 异构体, 归属

Abstract:

Three tautomers of gossypol, aldehyde (I), lacto (II) and ketal (III), exist in CDCl\-3, and are in equilibrium. 1H NMR spectra of the three tautomers were assigned by means of 1D and 2D NMR techniques including 1H-1H COSY, DEPT, HMQC (1H Detected Heteronuclear Multiple Quantum Coherence) and HMBC (1H Detected Heteronuclear Multiple Bond Connectivity) experiments.

Key words: 2D NMR, gossypol, dynamic equilibrium, tautomer,  chemical shift assignment

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