cytellin and taraxerone

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

7 compounds were isolated from the ethyl-acetate extract of Vaccinium iteophyllum Hance by using repeated silical gel column chromatography. These 7 compounds were identified by means of physico-chemical propertic and spectroscopic analysis as beta-sitosterol (I), ursolic acid (II), taraxerol (III), taraxerone (IV), friedelin (V), friedelinol (VI), 19,24-dihydroxyurs-12-en-3-one-28-oic acid (VII). The chemical constituents from this plant were reported here for the first time.

Topics: Acetates; Drugs, Chinese Herbal; Oleanolic Acid; Plant Leaves; Plant Stems; Plants, Medicinal; Sitosterols; Triterpenes; Vaccinium

To investigate the chemical constituents in Bruguiera sexangula var. rhynchopetala.. Silica gel flash chromatography together with Sephadex LH - 20 were performed for the isolation and purification of the petrol ether fraction of this plant, and the structures were elucidated by spectral analysis as well as the comparison of the spectral data with those reported in the literatures.. Nine compounds were obtained and identified as lupeol (1), lupeone (2), trans-hydroxy-cinnamoyl ester of lupeol (3), taraxerone (4), beta-amyril-palmitate (5), squalene (6),beta-sitosterol (7), daucosterol (8) and 7alpha-hydroxy-sitosterol (9).. All the compounds were first isolated from B. sexangula var. rhynchopetala.

Topics: Oleanolic Acid; Pentacyclic Triterpenes; Plants, Medicinal; Rhizophoraceae; Sitosterols; Triterpenes

To investigate the chemical constituents of Tetrastigma hemsleyanum native to China.. Compounds were separated by column chronatography with silica gel and elucidated by chemical evidence and spectral analysis.. Four compounds were isolated from the petroleum ether extract. Their structures were identifies as taraxerone, taraxerol,beta-sitosterol and ergosterol.. These compounds were isolated from the plant for the first time.

Topics: Ergosterol; Oleanolic Acid; Plants, Medicinal; Sitosterols; Vitaceae

To investigate the chemical constituents of Cichorium intybus.. Constituents were separated by means of solvent extraction and chromatography on silical gel. The structures were established by spectral analysis and chemical evidence.. Seven compounds were isolated from the roots of C. intybus and four of them were identified as alpha-amyrin, taraxerone, baurenyl acetate and beta-sitosterol.. All the four compounds were obtained from the plant for the first time.

Topics: Cichorium intybus; Drugs, Chinese Herbal; Molecular Structure; Oleanolic Acid; Plants, Medicinal; Sitosterols; Triterpenes

Four compounds were isolated from the roots of Adenophora stricta. On the basis of spectrometric analysis and physicochemical constants, they were identified as beta-sitosterol, beta-sitosterol-O-beta-D-glucopyranoside, taraxerone and octacasanoic acid respectively. Taraxerone and octacasanoic acid were isolated from the plants of Adenophora for the first time.

Topics: Drugs, Chinese Herbal; Fatty Acids; Oleanolic Acid; Sitosterols