cytellin and 5-hydroxymethylfurfural

Eleven compounds, including four flavonoids [(2R,3R)-2,3-dihydro-3,5-dihydroxy-7,4'-dimethoxyflavone (1), 5-hydroxy-7,8,4'-trimethoxy-flavone (2), amentoflavone (10) and apigenin (11)], two penylpropanoids [sinapaldehyde (3) and 3-methoxy-4-hydroxy-cinnamic aldehyde (4)], three phenolic acids [4-hydroxyl-3,5-dimethoxy-benzaldehyde (5), 4-hydroxyacetophen-one (6) and p-hydroxybenzaldehyde (7)], one furan derivative [5-hydroxymethyl furfural (8)] and one steroid saponin [β-sitosterol-3-O-β-d-glucoside (9)], were isolated and identified from Aletris spicata. Among them, compounds 1-7, 9 and 10 were reported from the genus Aletris for the first time. Furthermore, seven of them (1-6, 10) were obtained from the family Liliaceae for the first time. Chemotaxonomy of the isolated compounds is discussed briefly.

Topics: Apigenin; Benzaldehydes; Flavones; Flavonoids; Furaldehyde; Glucosides; Liliaceae; Magnoliopsida; Phylogeny; Plants, Medicinal; Sitosterols

To study the chemical constituents from Radix Ranunculi Ternate.. The compounds were isolated by silica gel, Sephadex LH-20, and ODS column chromatography, and their structures were elucidated by means of spectral analysis.. Eight compounds were isolated and identified as phillygenin (I), bis-(2-ethylhexyl) phthalate (DEHP, II), henicosanoic acid methyl ester (III), 5-hydroxymethyl-furfural (IV), mixture of stigmasterol and sitosterol (V and VI), daucosterol (VII).. Compounds I-III are isolated from the genus for the first time.

Topics: Diethylhexyl Phthalate; Furaldehyde; Lignans; Magnetic Resonance Spectroscopy; Plant Roots; Plants, Medicinal; Ranunculus; Sitosterols; Stigmasterol

Five sesquiterpenes, dehydrocostus lactone (1), santamarine (5), beta-cyclocostunolide (6), 4alpha-hydroxy-4beta-methyldihydrocostol (7) and 10alpha-hydroxyl-artemisinic acid (9), along with four other compounds, beta-sitosterol (2), daucosterol (3), 5-hydroxymethyl-furaldehyde (4), and trans-syingin (8), were isolated and identified from the roots of Saussurea lappa (Compositae). Based on previous reports and our study, sesquiterpene derivatives are common and characteristic constituents of the genus Saussurea. Among the nine compounds obtained, 9 is a new sesquiterpene. It is an artemisinic acid derivative, whose structural skeleton has not been reported for Saussurea species before, but artemisinic acid is a common compound in another Compositae species, Artemisia annua. Dehydrocostus lactone (1) is present in high-content and is a possible bioprecursor of 10alpha-hydroxyartemisinic acid (9).

Topics: Furaldehyde; Plant Roots; Saussurea; Sesquiterpenes; Sitosterols

To study the constituents of the roots of Euphorbia hylonoma Hand. -Mazz.. The chemical constituents were isolated and purified by solvent extraction together with various chromatographic techniques, the structures were elucidated on the basis of chemical properties and spectral data.. Eight compounds were isolated from the acetone extracts of the roots of Euphorbia hylonoma Hand-Mazz., which were euphol(I), 5-hydroxymethylfuraldehyde(II), beta-sitosterol(III), beta-sitosterol glucoside (IV),3,3',4-tri-o-methylellagic acid(V), 3, 3' tdi-o-methylellagic acid (VI),3,3'-di-o-methylellagic acid-4'-o-beta-dxylopyranosid (VII), gallic acid(VIII).. The compounds II, VI, VII, VIII were isolated from Euphorbia hylonoma Hand-Mazz. for the first time.

Topics: Ellagic Acid; Euphorbia; Furaldehyde; Gallic Acid; Lanosterol; Molecular Structure; Plant Roots; Plants, Medicinal; Sitosterols

The chemical constituents of Rosa bracteata Wendl. var. bracteata were studied for the first time. Six compounds were isolated from the fruits of the plant, and four of them have been identified as 5-hydroxymethyl furfural, 5-acetoxymethyl furfural, beta-sitosterol, oleanolic acid. 5-hydroxymethy furfural and 5-acetoxymethyl furfural were obtained from genus Rosa L. for the first time. Otherwise, a white wax was obtained by silica gel column chromatography, from which four main constituents were identified as nonadecene, n-docosane, hentriacontane and hexatriacontane by GC-MS.

Topics: Chromatography, Gas; Fruit; Furaldehyde; Gas Chromatography-Mass Spectrometry; Hydrocarbons; Oleanolic Acid; Plants, Medicinal; Rosa; Sitosterols