波谱学杂志 ›› 1993, Vol. 10 ›› Issue (4): 433-440.

• 研究论文 • 上一篇    下一篇

用2D NMR研究凯林内酯酰化物的相对构型

孔令义1, 裴月湖1, 李铣1, 朱廷儒1, 吕扬2, 田之悦2, 郑启泰2   

  1. 1. 沈阳药学院天然药物研究室, 沈阳 110015;
    2. 中国医学科学院药物研究所, 北京 100050
  • 收稿日期:1992-08-10 修回日期:1992-12-14 出版日期:1993-12-05 发布日期:2018-01-20

2D NMR STUDIES ON RELATIVE CONFIGURATION OF ACYLATED KHELLACTONES

Kong Lingyi1, Pei Yuehu1, Li Xian1, Zhu Tingru1, Lu Yang2, Tian Zhiyue2, Zheng Qitai2   

  1. 1. Research Department of Natural Medicines, Shenyang College of Pharmacy, Shenyang 110015;
    2. Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050
  • Received:1992-08-10 Revised:1992-12-14 Online:1993-12-05 Published:2018-01-20

摘要: 用2D NMR对钙离子拮抗活性成分Pd-Ia的结构进行了深入研究,确切归属了全部碳氢信号,纠正了文献中甲基信号归属的错误。并以此为参考,指定了这类化合物母核碳信号的归属,从而修正了文献中用角甲基碳化学位移值之差决定其C-3'和C-4'相对构型的有关内容,发现在顺式构型中,连接在C-2'的两个角甲基碳化学位移差值大于或等于2ppm,而在反式构型中,这个差值小于或等于2ppm,且△(δC-3'trans-δC-3'cis)>1ppm。

关键词: 2D NMR, Pd-Ia, 凯林内酯酰化物, 相对构型

Abstract: 2D NMR (1H-1H COSY, 13C-1H COSY, COLOC) and X-ray diffraction were used to study the structure of Pd-Ia. The proton signals in 1H NMR and carbon signals in 13C NMR were assigned definitely. The mistake about the assignment of signals of geminal methyls in 13C NMR was corrected. Accordingly, some points concerning the determination of C-3' and C-4' relative configuration of the kind of the compounds decided by the value of chemical shifts difference of geminal methyls in 13C NMR were revised. It was discovered that the △δ of geminal methyls ≥ 2ppm for cis-configuration and the △δ of geminal methyls ≤ 2ppm for trans-configuration in 13C NMR, and △(δC-3' trans-δC-3'cis)>lppm.

Key words: 2D NMR, X-ray diffraction, Pd-Ia, Acylated khellactones, Relative configuration