Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (1): 49-52. Previous Articles     Next Articles

Original Articles


闫静1,2, 刘志强*,1, 朱海光2, 刘淑莹1   

  1. (1中国科学院长春应用化学研究所长春质谱中心 长春 130022)
    (2黑龙江中医药大学药学院 哈尔滨 150040)
  • 收稿日期:2006-04-03 修回日期:2006-08-02 出版日期:2007-01-14 发布日期:2007-01-14
  • 通讯作者: 刘志强

Analysis of Two Trace Alkaloid Isomers in Strychnos nux-vomical by Electrospray Ionization Tandem Mass Spectrometry

YAN Jing1,2; LIU Zhi-Qiang*,1; ZHU Hai-Guang2; LIU Shu-Ying1   

  1. (1 Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun Center of Mass Spectrometry, Changchun 130022)
    (2 College of Pharmacy, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040)
  • Received:2006-04-03 Revised:2006-08-02 Online:2007-01-14 Published:2007-01-14
  • Contact: LIU Zhi-Qiang

According to their molecular mass and ESI-MSn data, the trace alkaloid isomers pseudostrychnine and strychnine N-oxide in extracts of the total alkaloids from Strychnos nux-vomical were qualitatively analyzed by electrospray ionization tandem mass spectrometry (ESI-MSn) method after rough silica gel-column chromatographic separation. We also investigated the relationship between their fragmentation mechanism and structures of the two alkaloid isomers. A new method for quickly and highly sensitively analyzing the two alkaloid isomers was proposed.

Key words: pseudostrychnine, strychnine N-oxide, electrospray tandem mass spectrometry