cytellin and 4-hydroxybenzaldehyde

A new 9,10-dihydrophenanthrene,1,5-dihydroxy-3,4,7-trimethoxy-9,10-dihydrophenanthrene (1) was isolated and identified from the whole plants of Dendrobium moniliforme, as well as 24 known compounds including hircinol (2), (2R*,3S*)-3-hydroxymethyl-9-methoxy-2-(4'-hydroxy-3',5'-dimethoxyphenyl)-2,3,6,7-tetrahydro-phenanthro[4,3-b]furan-5,11-diol (3), diospyrosin (4), aloifol I (5), moscatilin (6), 3,4'-dihydroxy-3',4,5-trimethoxybibenzyl (7), gigantol (8), 3,3'-dihydroxy-4,5-dimethoxybibenzyl (9), longicornuol A (10), N-trans-cinnamoyltyramine (11), paprazine (12), N-trans-feruloyl 3'-O-methyldopamine (13), moupinamide (14), dihydroconiferyl dihydro-p-coumarate (15), dihydrosinapyl dihydro-p-coumarate (16), 3-isopropyl-5-acetoxycyclohexene-2-one-1 (17), p-hydroxybenzaldehyde (18), vanillin (19), p-hydroxyphenylpropionic acid (20), vanillic acid (21), protocatechuic acid (22), (+)-syringaresinol (23), β-sitosterol (24) and daucosterol (25). Compounds 3, 4, 13, 16, 17 and 20 were isolated from the Dendrobium genus for the first time, and compounds 2, 5, 7, 9-12, 14, 15, 18, 21 and 22 were originally obtained from D. moniliforme.

Topics: Benzaldehydes; Bibenzyls; Cinnamates; Coumaric Acids; Dendrobium; Furans; Guaiacol; Lignans; Magnetic Resonance Spectroscopy; Molecular Structure; Phenanthrenes; Phenylpropionates; Plants, Medicinal; Sitosterols; Spectrometry, Mass, Electrospray Ionization; Tyramine

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 of Cudrania cochinchinensis.. Compounds were isolated and purified by silica gel column, sephadex LH-20 chromatography and recrystallization. Their structures were elucidated by physicochemical properties and spectral data.. Thirteen compounds were isolated from the 70% ethanol extract of the root of Cudrania cochinchinensis and identified as beta-sitosterol (1), butyrospermol (2), butyrospermol acetate (3), (+) syringarenol (4), 1, 3, 6-trihydroxy-7-methoxy xanthone (5), 1, 3, 6, 7-tetrahydroxy-8-prenylxanthone (6), kaempferol (7), dihydrokaempferol (8), umbelliferone (9),4-hydroxybenzyl ethyl ether (10), 2,4-dihydroxybenzaldehyde (11), 4-hydrox-ybenzaldehyde (12) and vanillin (13).. Compounds 2 - 6, 10 - 13 are isolated from Cudrania cochinchinensis for the first time.

Topics: Benzaldehydes; Chromatography, Thin Layer; Molecular Structure; Moraceae; Plant Extracts; Plant Roots; Plants, Medicinal; Sitosterols; Xanthones

To study the chemical constituents in ethyl acetate extraction of Semen Litchi.. The compounds were isolated and purified by column chromatography on silica gel and Sephadex LH-20 coupled with preparative silica gel TLC, their structures were identified by physicochemical properties and spectrum analysis.. Five compounds were isolated and identified as stigmasterol (1), P-hydroxy-benzaldehyde (2), protocatechuic acid (3), daucosterol (4) and kaempferol-3-O-beta-D-glucopyranoside (5).. Compounds 2 and 5 are obtained from this plant for the first time.

Topics: Benzaldehydes; Fruit; Hydroxybenzoates; Kaempferols; Litchi; Molecular Structure; Seeds; Sitosterols; Stigmasterol

To study the chemical constituents in roots of Saussurea lappa.. Isolation and purification were carried out by silica gel, Sephadex LH-20 and RP-18 column chromatography. The chemical structures of constituents were elucidated on the basis of spectral data.. Eleven compounds were isolated and identified as: 5,7-dihydroxy-2-methylchromone (1), p-hydroxybenzaldehyde (2), 3,5-dimethoxy-4-hydroxy-benzaldehyde (3), 3,5-dimethoxy-4-hydroxy-acetophenone (4), ethyl 2-pyrrolidinone-5(s)-carboxylate (5), 5-hydroxymethyl-furaldehyde (6), palmitic acid (7), succinic acid (8), glucose (9), daucosterol (10), beta-sitosterol (11).. Compounds 1, 2, 4, 5, 7, 9 were isolated from the genus Saussurea for the first time.

Topics: Benzaldehydes; Palmitic Acid; Plant Roots; Pyrrolidinones; Saussurea; Sitosterols

To study the chemical constituents of Epimedium breviconum.. Compounds were purificated with various chromatographic techniques such as silica vacuum liquid chromatography and Sephadex LH-20 column chromatography. Their structures were elucidated by physico-chemical methods and spectral analysis.. Ten compounds were obtained and indentified as (7R, 8S) 4,9-dihydroxyl-3,3'-dimethyoxyl-7, 8-dihydrobenzofunan-1'-propanolneolignan-9'-O-alpha-L-rhamnopyranoside (1), (7R, 8S, 8' R) 4, 4', 8', 9-tetrahydroxyl-3, 3'-dimethyoxyl-7, 9'-monoepoxylignan (2), (+)-cycloolivil (3), (3, 5, 7, 4')-tetrahydroxyl-8-isopentene group flavonoids-3-O-alpha-L-rhamnopyranoside (4), beta-sitosterol (5), p-hydroxybenzaldehyde (6), succinic acid (7) and p-hydroxyphenethyl (8).. Compound 1 is isolated from this genus for the first time. Compounds 2,3,5 -8 are isolated from the plant for the first time.

Topics: 2-Hydroxyphenethylamine; Benzaldehydes; Epimedium; Lignans; Magnetic Resonance Spectroscopy; Molecular Structure; Monosaccharides; Phenols; Plant Leaves; Plants, Medicinal; Sitosterols; Succinic Acid

To investigate the chemical constituents from Anoectochilus roxburghii.. The compounds were isolated and purified by repeated column chromatographies with silica gel, Macroporous resin and Sephadex LH-20, and their structures were identified by their physical and spectral datas.. Ten compounds were isolated and elucidated as: beta-D-glucopyranosyl-(3R)-hydroxybutanolide (I), stearic acid (II), palmitic acid (III), beta-sitosterol (IV) and succinic acid (V), p-hydroxy benzaldehyde (VI), daucosterol (VII), and methyl 4-beta-D-glucopyranosyl-hutanoate (VIII); as well as p-hydroxy cinnamic acid (IX) and o-hydroxy phenol (X) were identified.. Compound I ,VIII, X are firstly isolated from this species.

Topics: Benzaldehydes; Catechols; Orchidaceae; Palmitic Acid; Plants, Medicinal; Sitosterols; Stearic Acids; Succinic Acid

To investigate the anti-HIV constituents from the root of Mirabilis jalapa.. The compounds were isolated by column chromatography on silica gel, Sephadex LH - 20, MCI-gel CHP-20P and RP-18. The structure were identified by means of NMR and MS analyses (1H-NMR, 13C-NMR, MS).. Eleven compounds were isolated and identified as astragaloside II (1), astragaloside II (2), astragaloside IV (3), astragaloside VI (4), flazin (5), 4'-hydroxy-2, 3-dihydroflavone 7-beta-D-glucopyranoside (6), gingerglycolipid A (7), 3, 4-dihydroxybenzaldehyd (8), p-hydroxybenzaldehyde (9), beta-sitosterol (10) and daucosterol (11).. Compounds 1-9 were obtained from this genus for the first time.

Topics: Benzaldehydes; Carbolines; Chromatography, Gel; Furans; Galactolipids; Magnetic Resonance Spectroscopy; Mass Spectrometry; Mirabilis; Plant Roots; Sitosterols

To investigate the chemical constituents of the aerial parts of Plumbago zeylanica Linn.. The constituents of the EtOAc-soluble portion in the 95% ethanol extract were isolated and purified by means of chromatography. Compounds were identified by their physical characteristics and spectral features.. Nine compounds were isolated as plumbagin (I), isoshinanolone (II), plumbagic acid (III), beta-sitosterol (IV), 4-hydroxybenzaldehyde (V), trans-cinnamic acid (VI), vanillic acid (VII), 2, 5-dimethyl-7-hydroxychromone (VIII), indole-3-carboxaldehyde (IX).. Compounds V, VII, VIII and IX were isolated for the first time from Plumbago Linn.

Topics: Benzaldehydes; Cinnamates; Indoles; Magnetic Resonance Spectroscopy; Molecular Structure; Naphthoquinones; Plant Components, Aerial; Plants, Medicinal; Plumbaginaceae; Sitosterols; Tetrahydronaphthalenes; Vanillic Acid

To study the chemical constituents of Anoectochilus roxburghii.. Silica gel and sephadex LH-20 column chromotography were used in the isolation from the ethanol extracts of the whole plant, the compounds were determined on the basis of various modern spectroscopic analysis and physical constants.. Five compounds were isolated from the CHCl3 soluble portion, identified as p-Hydroxybenzaldehyde (I), ferulic acid (II), quercetin (III), daucosterol (IV), cirsilineol (V).. All these compounds were isolated from the plant for the first time, compound V was isolated from the Orchid Family for the first time, the other compounds were isolated from this genus for the first time.

Topics: Benzaldehydes; Coumaric Acids; Flavones; Orchidaceae; Plants, Medicinal; Quercetin; Sitosterols