LI Jun-mao, HE Ming-zhen, LI Tian-er, et al. Fragmentation Behavior of Isorhynchophylline in ESI-MS and Its Application in Identification of Metabolites[J]. Chinese journal of experimental traditional medical formulae, 2016, 22(15): 78-84.
LI Jun-mao, HE Ming-zhen, LI Tian-er, et al. Fragmentation Behavior of Isorhynchophylline in ESI-MS and Its Application in Identification of Metabolites[J]. Chinese journal of experimental traditional medical formulae, 2016, 22(15): 78-84. DOI: 10.13422/j.cnki.syfjx.2016150078.
Objective: To analyze in vivo metabolic pathways and products of isorhynchophylline in rats. Method: UPLC-Q-TOF-MS with positive ion mode was established and applied to identify the metabolites of isorhynchophylline in rat plasma after intragastric administration of 37.5 mg·kg-1
mobile phase was 0.1%formic acid and acetonitrile for gradient elution. Result: A total of 13 compounds
including 1 prototype and 12 metabolites (11 of phase Ⅰ and 1 of phaseⅡ) were identified by compared with the blank biological samples and the fragmentation mechanism of MS spectra of reference substances. Conclusion: The metabolic pathway of isorhynchophylline in rats is summarized as oxidation
stereoisomerism
hydroxylation
dehydrogenation
hydrolyzation and glucuronidation.This paper enriches ESI-MS fragmentation rules of indole alkaloids and provides reference for further mass spectrometry analysis of such compounds.