ABSTRACT
Aims Tocomparethepharmacokineticsof ephedra alkaloids,cinnamic acid and cinnamic alcohol in Ephedrae, Cinnamomi and Ephedrae-Cinnamomi herb couple through UPLC-MS/MS in rats respective-ly,and to investigate the effect of combination on phys-iologicaldisposition.Methods Plasmasampleswere collected at different times after oral administration of Ephedrae,Cinnamomi and Ephedrae-Cinnamomi herb couple extracts.The concentrations of ephedra alka-loids,cinnamic acid and cinnamic alcohol in plasma samples were determined by UPLC-MS/MS.DAS 3. 0 was used to calculate pharmacokinetic parameters.The differences of samples in two groups were conducted with univariate statistical analysis using SPSS 13. 0. Results ComparedwithEphedraegroup,theCmaxof norephedrine hydrochloride, norpseudoephedrine hydrochloride,ephedrine hydrochloride,pseudoephed-rine hydrochloride,and methylephedrine hydrochloride in Ephedrae-Cinnamomi herb couple group were signif-icantly greater (P<0. 05 );the AUC0-t of norpseudo-ephedrine hydrochloride was significantly greater (P<0. 05 );the MRT0-t of norephedrine hydrochloride, phedrine hydrochloride, pseudoephedrine hydrochlo-ride,and methylephedrine hydrochloride were signifi-cantly less (P <0. 05 );the T1/2z of norephedrine hydrochloride,phedrine hydrochloride,and methyl-ephedrine hydrochloride were significantly less (P <0. 05 ).The AUC0-t and MRT0-t of cinnamic acid and cinnamic alcohol were significantly greater than those inCinnamomigroup(P<0.05).Conclusion The combination of Ephedrae and Cinnamomi improves the absorption concentration of five ephedra alkaloids, Slows down the elimination of norephedrine hydrochlo-ride,phedrine hydrochloride,pseudoephedrine hydro-chloride,and methylephedrine hydrochloride,and in-creases the bioavailability of cinnamic acid and cin-namic alcohol.
ABSTRACT
Objective: To investigate the chemical constituents from the petroleum ether and ethyl acetate extract of Guizhi Fuling Capsule (GFC). Methods: The compounds were separated with chromatography on silica gel and polydextran gel columns, and prep-HPLC, and their chemical structures were identified by NMR and MS spectral methods, respectively. Results: Eight compounds were isolated from the petroleun ether extract and were identified as coumarin (1), 7-hydroxycoumarin (2), cinnamic alcohol (3), ergosterol (4), ergosta-4, 6, 8 (14), 22-tetraen-3-one (5), β-amyrin acetate (6), campesterol (7), and α-amyrin acetate (8). Thirteen compounds were isolated from the ethyl acetate extract and were identified as apingenin (9), kaemferol (10), quercetin (11), kaempferol-3-O-glucopyranoside (12), catechin (13), epicatechin (14), syringic acid (15), hyperin (16), eicosanoids (17), syringaresinol (18), mudanpioside A (19), mudanpioside C (20), and galloylpaeoniflorin (21). Conclusion: Compounds 1-21 are isolated from GFC for the first time.
ABSTRACT
The components of volatile oil in radix and rhizome of Changbaishan Rhodiola Sachliensis A. Bor. were analysed with combine use method of GC-MS-Computer. A total of 26 components were separated and identified. The cinnamic alcohol content among them was highest, relative content reaching 26%. The volatile oil contained 7 sesquiterpene components. The content of ?-caryophyllene and ?—patchoulene was higher among them, 12% and 1.86% of total volatile oil, respectively.