Chinese Journal of Chemistry p. 2494 - 2500 (2010)
Update date:2022-08-30
Topics:
Wang, Xiye
Pi, Zifeng
Liu, Wenlong
Zhao, Yufeng
Liu, Shuying
A semi-quantitative method of mass spectrometry (MS) has been described for the analysis of metabolites of aconitine by rat intestinal bacteria at different pH. At pH 7.0, the rat intestinal bacteria exhibit optimal activity for the metabolism of aconitine. A high-performance liquid chromatography- electrospray ionization multiple-stage mass spectrometry (HPLC/ESI-MS n) method has been applied to investigate the characteristic product ions of metabolites. Then, the logical fragmentation pathways of metabolites have been proposed. By comparing the retention time (tR) of HPLC and the ESI-MSn data with the data of standard compounds and reports from literature, ten metabolites have been identified and a distinctive metabolite (15-deoxyaconitine) has been deduced first time. The experimental results demonstrate that HPLC/ESI-MSn is a specific and useful method for the identification of metabolites of aconitine. Also, in the present paper, the HPLC-MS method was introduced to determine the synthetical metabolite prior to the study of the toxicity by the method of Bliss. HPLC chromatogram of metabolites of aconitine at pH 7. 1. benzoylaconine, 2. 15-deoxybenzoylaconine, 3. 8-octenoyl-benzoylaconine, 4. 10-OH-aconitine, 5. 15-deoxyaconine, 6. aconitine, 7. 8-hexenoyl-benzoylaconine, 8. 8-propionyl-benzoylaconine, 9. 8-butyryl-benzoylaconine, 10. deoxyaconitine, 11. 8(3-hydroxyl)-butyryl- benzoylaconine.
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