cytellin and sitosterol-palmitate

To study the chemical constituents from the leaf of Bombax ceiba.. The compounds were isolated and purified with silica gel and Sephadex LH-20 column chromatography. Their structures were determined on the basis of physicochemical properties and spectroscopic analysis.. Eleven compounds were isolated and identified as taraxeryl acetate (1), squalene (2), taraxerone (3), beta-sitosterol palmitate (4), taraxerol (5), 4-methyl stigmast-7-en-3-ol (6), 1H-indole-3-carboxylic acid (7), 6-O-palmitoylsitosteryl-D-glucoside (8), 12beta-hydroxyl-pregnane-4, 16-diene-3, 20-dione (9), loliolide (10) and 5-(hydroxymethyl) furfural (11).. All the compounds are isolated from this genus for the first time.

Topics: Bombax; Chromatography, Thin Layer; Drugs, Chinese Herbal; Molecular Structure; Oleanolic Acid; Plant Leaves; Sitosterols; Squalene; Triterpenes

To study the triterpenoids constituents from Wisteria sinensis Sweet Caulis.. The compounds were beta-solated and purified with silica gel and Sephadex LH-20 column chromatography from the petroleum ether extract. Their structures were determined on the basis of physicochemical properties and spectroscopic analysis.. They were identified as beta-sitosterol palmitate (1), alpha-spinasterol (2), (22E, 24R)-5alpha, 8alpha-epidioxy-ergosta-6, 22-dien-3beta-ol (3), (22E, 24R)-ergosta-5, 7, 22-trien-3beta-ol (4), (22E, 24R) -ergosta-7, 22-dien-3beta-ol (5), 11alpha, 12alpha-oxidotaraxerol (6), lupeol (7), betulinic acid (8), 22-oxo-3beta, 24-dihydroxyolean-12-ene (9), 2alpha, 3beta, 23-trihydroxyolean-12-ene (10), soyasapogenol E (11), 3alpha, 21beta-dihydroxy-olean-12-ene (12).. Compounds 1 - 12 are isolated from this plant for the first time.

Topics: Ethanol; Molecular Structure; Plant Stems; Sitosterols; Stigmasterol; Triterpenes; Wisteria

To study the chemical constituents of Uvaria microcarpa.. The constituents were repeatedly separated and purified with silica gel column and Sephadex LH-20 column, and identified by physico-chemical properties and spectral methods.. Nine compounds were separated and identified as beta-sitosterol palmitate (I), euphorginol (II), beta-sitosterol (III), benzoic acid(IV), stigmasterol-3-O-beta-D-glucopyranoside (V), taraxerol (VI), emodin (VII), aristololactam A II (VI), beta-daucosterol (IX) .. Compounds I, II, V, V are isolated from this plant for the first time.

Topics: Emodin; Glucosides; Molecular Structure; Oleanolic Acid; Plant Stems; Plants, Medicinal; Sitosterols; Spectrophotometry, Ultraviolet; Stigmasterol; Uvaria

To study the chemical constituents of Sparganium stoleniferum Buch. -Ham, various chromatographic techniques were used to separate and purify the chemical constituents. Their physicochemical properties and spectral data were used to elucidate the structures. Five compounds have been isolated by using silica gel column chromatography. They are beta-sitosterol plamitate (I), SanLeng diphenyllactone (II), SanLeng diphenylacetypene (III), 6,7,10-trihydroxy-8-octadecenoic acid (IV) and daucosterol plamitate (V). Compound II, III are two new compounds.

Topics: Benzoates; Magnoliopsida; Molecular Structure; Plant Tubers; Plants, Medicinal; Pyrones; Sitosterols; Xanthones

To isolate and determine the chemical constituents from Astilbe chinensis.. Four compounds were isolated and purified by extraction and column chromatography on silica gel. The chemical structures were determined on the basis of physical-chemical evidence and extensive spectral analysis(HR-EIMS, EIMS, 13C-NMR, 1H-NMR, DEPT, 1H-1H-COSY, HMQC and HMBC).. Their structures were elucidated as beta-sitosterol palmitate I, daucosterol II beta-sitosterol III and Bergenin IV, respectively.. Compound I and II were isolated from A. chinensis for the first time.

Topics: Plant Roots; Plants, Medicinal; Saxifragaceae; Sitosterols