化学学报 ›› 1988, Vol. 46 ›› Issue (1): 76-77. 上一篇    下一篇

研究论文

利用质子COSY-45来确定土槿皮酸类衍生物偶合常数的相对符号

俞汉钢;宋国强   

  1. 中国科学院上海药物研究所
  • 发布日期:1988-01-15

Determination of relative signs of scalar coupling constants in pseudolaric acid derivatives by ^1H COSY-45

YU HANGANG;SONG GUOQIANG   

  • Published:1988-01-15

报导了用2D-COSY-45谱确定土槿皮酸B(2)及其衍生物(1)中具有AMX自旋体系的偶合常数相对符号, 从(1)获得的结果与以Pseudo-INDOR技术获得的结果一致, 因此COS6-45不仅可用来观察质子基团间的偶合关系, 而且还可判断三核自旋偶合体系偶合常数的相对符号, 并可推广到ABX自旋体系中去.

关键词: 核磁共振谱法, 耦合常数, 自旋, 土槿皮酸

The relative signs of scalar coupling constants in pseudolaric acid B and its derivative I were reported using 2D COSY-45. The results obtained in I were consistent with that from pseudo-INDOR spectrum.

Key words: NMR SPECTROMETRY, COUPLING CONSTANT, SPIN, PSEUDOLARIC ACID

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