波谱学杂志 ›› 1992, Vol. 9 ›› Issue (1): 45-50.

• 研究论文 • 上一篇    下一篇

二氢沉香呋喃倍半萜的2D NMR研究

涂永强1, 李子忠1, 吴大刚2   

  1. 1. 兰州大学应用有机化学开放实验室, 兰州 730000;
    2. 中科院昆明植物研究所植化室
  • 收稿日期:1991-01-23 修回日期:1991-04-12 出版日期:1992-03-05 发布日期:2018-01-20

STUDY OF 2D NMR OF DIHYDROAGAROFURAN SESQUITERPENES

Tu Yongqiang1, Li Zfzhong1, Wu Dagang2   

  1. 1. National Laboratory of Applicational Organic Chemistry, Lanzhou University;
    2. Kunming Institute of Botany, the Chinese Academy of Sciences, Kunming
  • Received:1991-01-23 Revised:1991-04-12 Online:1992-03-05 Published:2018-01-20

摘要: 利用1H-13C相关(1H-13C COSY)谱对1β-乙酰氧基-2β(α-甲基丁酰氧基)-6α-羟基-8β,9α-二苯甲酰氧基-β-二氢沉香呋喃(A),和1β-乙酰氧基-2β(α-甲基丁酰氧基)-6α-羟基-8β(β-呋喃甲酰氧基)-9α-苯甲酰氧基-β-二氢沉香呋喃(B)的13C NMR谱化学位移进行了全指定,利用1H-1H远程相关(1H-1H COSYLR)谱确定了化合物A和B中6-Ha和7-He,8-He和9-He的弱偶合,以及7-He和9-He的弱W型远程偶合.

关键词: 二氢沉香呋喃倍半萜, 1H-1H COSYLR, 远程偶合, 1H-13C COSY, 化学位移

Abstract: The complete assignments of 13C NMR chemical shifts for 1β-acetoxy-2β (α-methylbutanoyloxy)-6α-hydroxy-8β,9α-dibenzoyloxy-β-dihydroaga -rofuran(A) and 1β-acetoxy-2β(α-methylbutanoyloxy)-6α-hydroxy-8β -(β-furancarbonyloxy) -9α-benzoyloxy -β-dihydroagarofuran(B), were carried out on the basis of 1H-13C correlation(1H-13C COSY) spectra. The weak coupling between 6-Ha and 7-He, and between 8 -He and 9-He, and the "W" long -range coupling between 7-He and 9-He for compounds A and B were also determined on the basis of 1H-1H long-range correlation (1H -1H COSYLR) spectra.

Key words: Dihydroagarofuran sesquitcrpene, 1H-1H COSYLR, Long-range coupling, 1H-13C COSY, Chemical shift