Chinese Journal of Magnetic Resonance ›› 1993, Vol. 10 ›› Issue (2): 141-148.

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THE APPLICATION OF HOMONUCLEAR RELAY SPECTROSCOPY TO THE 1H CHEMICAL SHIFTS ASSIGNMENTS OF GINSENOSIDE-Rb1

Yang Yanwu1, Xu Xiaolong2, Mao Shizhen2, Qiu Jianqing2, Wang Dehua2, Qian Baogong2   

  1. 1. Institute of Polymer Chemistry, Nankai University, Tianjin 300071;
    2. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, Chinese Acdemy of Sciences, Wuhan 430071
  • Received:1992-05-03 Revised:1992-08-14 Published:1993-06-05 Online:2018-01-20

Abstract: The 1H chemical shifts of ginsenoside-Rb1 were assigned completely by means of COSY and homonuclear RELAY spectroscopy. Some external cross peaks were observed in single and mutiple homonuclear RELAY spectra, the results of calculation of product operator indicated that these external cross peaks originated from the relayed coherence transfer of long range coupling interaction of protons.

Key words: Ginsenoside-Rb1, 2D NMR, Homonuclcar relay spectroscopy