波谱学杂志 ›› 1992, Vol. 9 ›› Issue (4): 329-335.

• 研究论文 • 上一篇    下一篇

β-二氢沉香呋喃倍半萜的1H和13C化学位移全指定及13C化学位移与立体化学之间的关系

涂永强, 王艳红   

  1. 兰州大学化学系兰州 730000
  • 收稿日期:1991-11-25 修回日期:1992-03-30 出版日期:1992-12-05 发布日期:2018-01-20

COMPLETE 1H AND 13C CHEMICAL SHIFTS ASSIGNMENTS AND THE RELATIONSHIP BETWEEN 13C CHEMICAL SHIFTS AND STEREOCHEMISTRY FOR β-DIHYDROAGAROFURAN SESQUITERPENE

Tu Yongqiang, Wang Yanhong   

  1. Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
  • Received:1991-11-25 Revised:1992-03-30 Online:1992-12-05 Published:2018-01-20

摘要: 采用1H,13C-COSY和COLOC谱,对三个(1-3)β-二氢沉香些喃倍半萜的1H和13C化学位移进行了全指定.经过考察和比较上述化合物及十九个文献报导化合物的立体化学和C-14化学位移的关系,得出一个新的,非常重要的构型判断方法.

关键词: 1H和13C化学位移, 2D NMR, 二氢沉香呋喃倍半萜, 立体化学

Abstract: Complete 1H and 13C chemical shifts assignments of three kinds of b-dihydroagarofuran sesquiterpcnoids (1-3) were carried out on the basis of 1H, 13C-COSY and 1H, 13C long-range COSY(COLOC) spectra. An exact examination and comparison of the relationship between the 13C chemical shifts for C-14 and the stereochemistry at C-8 and C-9 for these compounds, as well as nineteen other various β-dihydroagarofuran compounds, have led to a new and very important means of conformational characterization.

Key words: 1H and 13C chemical shifts, 2D NMR, β-dihydroagarofuran sesquiterpenoids, Stereochemistry