gamma-sitosterol and aromadedrin

A phytochemical study of Ficus thonningii has led to the isolation of two previously unreported compounds, thonningiiflavanonol A and thonningiiflavanonol B together with 16 known compounds: shuterin, naringenin, syringic acid, p-hydroxybenzoic acid, genistein, 5,7,3',4',5'-pentahydroxyflavanone, luteolin, methylparaben, aromadendrin, garbanzol, dihydroquercetin, 5,7,3'-trihydroxyflavanone, β-sitosterol, sitosterolglucoside, lupeol acetate, and taraxerol. Their structures were elucidated on the basis of spectroscopic data. The new compounds and extracts displayed potent antioxidant activity.

Topics: Antioxidants; Ficus; Flavanones; Flavonoids; Gallic Acid; Genistein; Luteolin; Magnetic Resonance Spectroscopy; Molecular Structure; Oleanolic Acid; Parabens; Plant Bark; Plant Extracts; Plant Roots; Plant Stems; Quercetin; Sitosterols

To study the chemical constituents of the rhizomes of Smilax china.. The constituents of the rhizomes of S. china were isolated and purified by repeated silica gel and Sephadex LH-20 chromatography, and their structures were elucidated on the basis of spectral analysis.. Thirteen compounds were obtained and identified as kaemperol-7-O-beta-D-glucopyranoside (1), engeletin (2), isoengeletin (3), kaempferol (4), dihydrokaempferol (5), dihydrokaempferol-5-O-P-D-glucopyranoside (6), rutin (7), kaempferol- 5-O-beta-D-glucopyranoside (8), 3, 5, 4'-trihydroxystibene (9), vanillic acid (10), 3, 5-dimethoxy4-O-beta-D-glu-copyranosylcinnamic acid (11), beta-sitosterol (12), and beta-daucosterol (13) , respectively.. Compounds 1, 3, 7, 8, and 11 were isolated from this plant for the first time, and compounds 8 and 11 were isolated from the genus Smilax for the first time.

Topics: Chromatography; Flavonoids; Flavonols; Glycosides; Kaempferols; Magnetic Resonance Spectroscopy; Plants, Medicinal; Rhizome; Sitosterols; Smilax; Vanillic Acid

To study the chemical constituents of the 95% ethanol extract from the rhizome of Smilax china.. Seven compounds were isolated from ethyl acetate fraction of 95% ethanol extract by using repeated silica column chromatography, partition chromatography, preparing TLC, and other methods. Structure of three compounds of them was identified based on chemical methods and spectroscopic methods.. The structure of them were established as dihydrokaempferol-5-O-beta-D-glucoside (I), beta-sitosterol (II), daucosterol (III).. Compound I was a novel compound which was first found from natural plants.

Topics: Flavonoids; Glucosides; Molecular Structure; Plants, Medicinal; Rhizome; Sitosterols; Smilax; Spectrophotometry, Ultraviolet