eupalinolide-a and ethyl-acetate

eupalinolide-a has been researched along with ethyl-acetate* in 1 studies

Other Studies

1 other study(ies) available for eupalinolide-a and ethyl-acetate

Article	Year
Preparative isolation and purification of three sesquiterpenoid lactones from Eupatorium lindleyanum DC. by high-speed counter-current chromatography. Molecules (Basel, Switzerland), 2012, Jul-27, Volume: 17, Issue:8 A high-speed counter-current chromatography (HSCCC) method was established for the preparative separation of three sesquiterpenoid lactones from Eupatorium lindleyanum DC. The two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water (1:4:2:3, v/v/v/v) was selected. From 540 mg of the n-butanol fraction of Eupatorium lindleyanum DC., 10.8 mg of 3β-hydroxy-8β-[4'-hydroxytigloyloxy]-costunolide, 17.9 mg of eupalinolide A and 19.3 mg of eupalinolide B were obtained in a one-step HSCCC separation, with purities of 91.8%, 97.9% and 97.1%, respectively, as determined by HPLC. Their structures were further identified by ESI-MS and ¹H-NMR. Topics: Acetates; Butanols; Chromatography, High Pressure Liquid; Countercurrent Distribution; Drugs, Chinese Herbal; Ethanol; Eupatorium; Hexanes; Lactones; Methanol; Molecular Structure; Sesquiterpenes; Sesquiterpenes, Germacrane; Solvents; Spectrometry, Mass, Electrospray Ionization; Water	2012

Article

Year

Preparative isolation and purification of three sesquiterpenoid lactones from Eupatorium lindleyanum DC. by high-speed counter-current chromatography.

Molecules (Basel, Switzerland), 2012, Jul-27, Volume: 17, Issue:8

A high-speed counter-current chromatography (HSCCC) method was established for the preparative separation of three sesquiterpenoid lactones from Eupatorium lindleyanum DC. The two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water (1:4:2:3, v/v/v/v) was selected. From 540 mg of the n-butanol fraction of Eupatorium lindleyanum DC., 10.8 mg of 3β-hydroxy-8β-[4'-hydroxytigloyloxy]-costunolide, 17.9 mg of eupalinolide A and 19.3 mg of eupalinolide B were obtained in a one-step HSCCC separation, with purities of 91.8%, 97.9% and 97.1%, respectively, as determined by HPLC. Their structures were further identified by ESI-MS and ¹H-NMR.

Topics: Acetates; Butanols; Chromatography, High Pressure Liquid; Countercurrent Distribution; Drugs, Chinese Herbal; Ethanol; Eupatorium; Hexanes; Lactones; Methanol; Molecular Structure; Sesquiterpenes; Sesquiterpenes, Germacrane; Solvents; Spectrometry, Mass, Electrospray Ionization; Water

2012