benzofurans and albiflorin

In this present study, a sensitive and rapid UPLC-MS/MS method was developed for simultaneous quantification of paeoniflorin, albiflorin, ferulic acid, tetrahydropalmatine, protopine, typhaneoside and senkyunolide I in Beagle dog plasma after oral administration of the Shao-Fu-Zhu-Yu Decoction. Chloramphenicol and clarithromycin were used as internal standards. Plasma samples were processed by protein precipitation with methanol. The separation was performed on an Acquity BEH C18 column (100mm×2.1mm, 1.7μm) at a flow-rate of 0.4mL/min, using 0.1% formic acid-acetonitrile as mobile phase. Method validation was performed as per Food and Drug Administration guidelines and the results met the acceptance criteria. After validation, this method was successfully applied to a pharmacokinetic study. The results showed that the apparent plasma clearance of paeoniflorin, albiflorin, typhaneoside and senkyunolide I were significantly higher than others. Double peak was observed in plasma concentration curves of tetrahydropalmatine, the ferulic acid had a good absorption in Beagle dog plasma, and senkyunolide I was detected in plasma from the first blood sampling time (15min) and rapidly reached Tmax. The compound of typhaneoside has a low bioavailability according to the results.

Topics: Administration, Oral; Animals; Benzofurans; Benzophenanthridines; Berberine Alkaloids; Bridged-Ring Compounds; Chromatography, High Pressure Liquid; Coumaric Acids; Dogs; Drugs, Chinese Herbal; Female; Glucosides; Glycosides; Monoterpenes; Tandem Mass Spectrometry

To study the dissolution rate of active components of different extracting solvents of Danggui Chishao drug pair.. The dissolution rates of phenolic acids (ferulic acid, vanillic acid and gallic acid), monoterpenes (gallic acid, peoniflorin, albiflorin, hydroxypeoniflorin and galloylpaeoniflorin) and phthalates (senkyunolide and ligustilide) contained in Danggui Chishao drug pair were determined by quadrupole time-of-flight tandem mass spectrometry (UPLC-Q-TOF-MS) and ultra high performance liquid chromatography in combination with triple-quadrupole mass spectrometry (UPLC-TQ-MS).. The dissolution rates of phenolic acids and monoterpenes decreased with the increase in alcohol concentration, on the contrary the rates of phthalates increased. The relative dissolution rates of most active components were relatively high in water and low concentration alcohol than other solvents.. Liquid chromatography-mass spectrometry is practical for comprehensive multi-component assessment on traditional Chinese medicine preparation processes and can provide reference for optimization of processing parameters.

Topics: 4-Butyrolactone; Benzoates; Benzofurans; Bridged-Ring Compounds; Chromatography, Liquid; Drugs, Chinese Herbal; Gallic Acid; Glucosides; Hydroxybenzoates; Mass Spectrometry; Monoterpenes; Phthalic Acids; Solvents; Vanillic Acid