Abstract
Sagittatoside B is one of the principal diglucosides in Herba Epimedii. In this work, an ultra-performance liquid chromatography/quadrupole-time-of-flight mass spectrometry (UPLC/Q-TOF-MS) was applied to the rapid analysis of sagittatoside B metabolites in rats after oral administration. A total number of 17 metabolites were detected or tentatively identified from rat plasma, bile, urine and feces. The major metabolic pathways of sagittatoside B in rats were hydrolysis, hydrogenation, hydroxylation, dehydrogenation, demethylation, decarbonylation and conjugation with glucuronic acid and different sugars. This work revealed the metabolism of sagittatoside B in vivo, and reported the characteristic metabolic reactions of sagittatoside B for the first time. This provided the basis for the further research and development of sagittatoside B, and also provided reference for the metabolism of active flavonoid compounds.
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