cytellin and caffeic-acid

To investigate the chemical constituents of Kalopanax septemlobus.. Chromatographic techniques including silica gel, gel, semi-preparative HPLC and PTLC as well as recrystallization were employed in the isolation and purification, and the structures were elucidated by spectral analysis and physical and chemical properties.. 6 compounds were identified as liriodendrin (1), (-) -syringarenol (2), trans-coniferyl aldehyde (3), trans-caffeic acid (4), beta-daucosterol (5), beta-sitosterol (6).. Compounds 2 -5 are obtained from this genus for the first time.

Topics: Acrolein; Aldehydes; Caffeic Acids; Furans; Kalopanax; Lignans; Molecular Structure; Plant Bark; Plant Roots; Plants, Medicinal; Sitosterols

To study the chemical constituents from the antioxidant fraction of Neo-Taraxacum siphonathum.. Various chromatographic techniques were used to isolate and purify the constituents. The structures were elucidated on the basis of chemical evidence and spectral analysis.. Ten compounds were isolated and identified from Neo-T. siphonathum, caffeic acid (1), chlorogenic acid (2), quercetin (3), luteolin (4), quercetin-3-O-beta-D-glucopyranoside (5), quercetin-3-O-alpha-D-arabinofuranoside (6), quercetin-3-O-alpha-D-arabinopyranoside (7), luteolin-7-O-beta-D-glucopyranoside (8), beta-sitosterol (9) and daucosterol (10).. Compounds 1-10 were isolated from this plant for the first time.

Topics: Caffeic Acids; Chlorogenic Acid; Glucosides; Luteolin; Magnetic Resonance Spectroscopy; Quercetin; Sitosterols; Taraxacum

Six compounds were isolated and purified from Orobanche coerulescens by extraction and different kinds of column chromatography. The structures were determined on the basis of spectral analysis. The structures were elucidated as D-mannitol(I), beta-sitosterol(II), succinic acid(III), caffeic acid(IV), protocatechuic aldehyde(V) and daucosterol(VI). All compounds are obtained from this plant for the first time.

Topics: Benzaldehydes; Caffeic Acids; Catechols; Chromatography, Thin Layer; Ethanol; Mannitol; Orobanche; Plants, Medicinal; Rhizome; Sitosterols; Succinic Acid

Twelve compounds were isolated from the EtOAc-soluble and ButOH-soluble portions of the EtOH extract from the bark of Mitragyna rotundifolia. These compounds were identified by their spectral data as dauricine (1), 3,4-dihydroxybezoic acid (2), beta-sitosterol (3), scopleton (4),3,4,5-trimethyoxyphenol-1-glucopyranoside (5), taraxerol (6), 4-hydroxy-3-methyloxybenzoic acid (7), 3-hydroxy-4-methyloxybenzoic acid (8), caffeic acid (9), gambirine (10), gambireine (11),1,1-dimetheyl-2-acetl-diethyl ether (12), respectively. All compounds were isolated from this genus for the first time.

Topics: Alkaloids; Caffeic Acids; Mitragyna; Oleanolic Acid; Plant Bark; Plants, Medicinal; Sitosterols; Spectrophotometry, Ultraviolet

To study the chemical constituents in the aerial part of Thalictrum atriplex.. Chromatography and spectral analysis were used to isolate and elucidate the constituents.. Six compounds were isolated from the aerial part of Thalictrum atriplex, and elucidated as protocatechuic acid, caffeic acid, p-coumaric acid, kaempferol, beta-sitosterol and N-methylcorydaldine.. They are all isolated from the plant for the first time.

Topics: Caffeic Acids; Coumaric Acids; Drugs, Chinese Herbal; Flavonoids; Hydroxybenzoates; Kaempferols; Plants, Medicinal; Propionates; Sitosterols; Thalictrum