stigmasterol and stigmast-4-ene-3-6-dione

To study the chemical constituents of Abelmoschus esculentus.. The chemical constituents were isolated and purified by chromatography on silica gel and recrystallization. The chemical structures were elucidated on the basis of physicochemical properties and spectral date.. Twelve compounds were isolated and identified as 9,19-23 (Z)-cycloart-23-en-3beta, 25-diol(1), ergost-7,22-diene-3beta,5alpha,6beta-triol(2),5alpha, 6alpha-epoxyergost-8(14), 22-dien-3beta, 7alpha-diol(3), 5alpha,8alpha-epidioxyergost-22-en-3beta-ol(4), stigmast-5-ene-3beta,7alpha-diol(5), stigmast-5, 22-diene-3beta,7alpha-diol(6), stigmast-4-en-3beta,6beta-diol(7), stigmast-4,22-diene-3beta,6beta-diol(8), stigmast-4-ene-3, 6-dione(9), stigmast-4-ene-3-one (10),beta-sitosterol(11), daucosterol(12).. Compounds 1-10 are obtained from the plant for the first time and also from the genu for the first time.

Topics: Abelmoschus; Cholestenones; Chromatography, Thin Layer; Ergosterol; Fruit; Molecular Structure; Phytosterols; Solvents; Steroids; Stigmasterol

to research the chemical constituents of the liposoluble compounds from the stem and bark of Macaranga hemsleyana Pax & Hoffm.. Five compounds were obtained by silica chromatography and preparative TLC from the stem and bark of Macaranga hemsleyana Pax & Hoffm., and the chemical structures of these compounds were identified by modern spectroscopy as well as physico-chemical analysis.. These compounds were identified to be beta-Sitosterol (1), Stigmast-4-en-3-one (2), Stigmast-4-en-3,6-dione (3), 3beta-O-acetyl aleuritolic acid (4) and Canophyllol (5).. The liposoluble fractions of Macaranga hemsleyana Pax & Hoffm. are mainly steroidal and triterpenoid compounds.

Topics: Cholestenones; Euphorbiaceae; Plant Bark; Plant Stems; Plants, Medicinal; Spectrophotometry, Ultraviolet; Steroids; Stigmasterol; Triterpenes