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isoimperatorin/engelwurzen
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Seite 1 von 62 Ergebnisse
Preparative isolation of imperatorin, oxypeucedanin and isoimperatorin from traditional Chinese herb "bai zhi"Angelica dahurica (Fisch. ex Hoffm) Benth. et Hook using multidimensional high-speed counter-current chromatography.
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Preparative high-speed counter-current chromatography (CCC) was successfully used for isolation and purification of imperatorin, oxypeucedanin and isoimperatorin from traditional Chinese herb "bai zhi"Angelica dahurica (Fisch. ex Hoffm) Benth. et Hook using multidimensional counter-current
[Fast determination of active components in Angelica dahurica extract using capillary electrochromatography with methacrylate ester-based monolithic columns].
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The separation and determination of four important active components (imperatorin, isoimperatorin, phelloptorin and falcarindiol) from Angelica dahurica extract has been performed using capillary electrochromatography (CEC) with a methacrylate ester-based monolithic column. The effect of the porogen
[Effect investigation of coumarin constituents in Angelica dahurica on pharmacokinetics of docetaxel by LC-MS].
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The study was aimed to establish a liquid chromatography-tandem mass spectrometric method for the determination of the docetaxel concentration in rat plasma, and study the effect of coumarin constituents (imperatorin, isoimperatorin and oxypeucedanin) in Angelica dahurica on pharmacokinetics of
[Chemical constituents from lipophilic parts in roots of Angelica dahurica cv.Yubaizhi].
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The chemical constituents from lipophilic parts in the roots of Angelica dahurica cv. Yubaizhi were studied in this paper. The compounds were separated and purified by repeated column chromatographic methods on silica gel and HPLC, and the chemical structures of compounds were determined by spectral
[Extraction of coumarins from Angelica dahurica by supercritical extraction and GC-MS analysis].
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OBJECTIVE
To extract coumarins from Angelica Dahurica by supercritical CO2.
METHODS
Six-factor and three-level orthogonal experimental design was used to optimize the SFE conditions as guided by the content of total coumarins in the extract. Constituents of the coumarins were analyzed by GC-MS, and
Inhibitory effects of furanocoumarins isolated from the roots of Angelica dahurica on prostaglandin E2 production.
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We have isolated five furanocoumarins, byakangelicin, phellopterin, imperatorin, isoimperatorin, and oxypeucedanin methanolate, from the roots of Angelica dahurica (Umbelliferae) and prepared five semi-synthesized compounds by the partial reduction of each isolated furanocoumarin, and the effects of
[A new natural product from root of Angelica dahurica cv. Qibaizhi].
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OBJECTIVE
To study the chemical constituents of the root of Angelica dahurica cv. Qibaizhi.
METHODS
The compounds were isolated and purified by the methods of solvent extraction and chromatographic technique, and their structures were identified on the basis of the analyses of spectral
[Effect of heating treatment on stability of two coumarins in Angelica dahurica and activity of tyrosinase].
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To study the heating treatment of Angelica dahurica under different temperature and time conditions on the stability of coumarins and tyrosinase activity. HPLC method was used to determine the contents of imperatorin and isoimperatorin, and tyrosinase activity was assayed by measuring the oxidation
In vitro GABA-transaminase inhibitory compounds from the root of Angelica dahurica.
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The 80% aqueous MeOH extracts from the root of Angelica dahurica, found to inhibit the activities of GABA degradative enzymes GABA transaminase (GABA-T) and succinic semialdehyde dehydrogenase (SSADH), were fractionated using EtOAc, n-BuOH and H2O. Repeated column chromatography for the EtOAc and
[Chemical constituents from lipophilic parts in roots of Angelica dahurica var. formosana cv. Chuanbaizhi].
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The chemical constituents from lipophilic parts in the roots of Angelica dahurica var. formosana cv. Chuanbaizhi were studied in this paper. The compounds were separated and purified by repeated column chromatographic methods on silica gel and HPLC, and the chemical structures of compounds were
[Effect of different plant growth regulators on yield and quality of Angelica dahurica var. formosana development].
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OBJECTIVE
To investigate the effect of plant growth regulators on the growth and quality of Angelica dahurica var. formosana.
METHODS
Five plant growth regulators: chlormequat chloride (CCC), Mepiquat chloride (PIX), Gibberellic acid (GA3), Paclobutrazol (PP333) and Maleic Hydrazide (MH) were
Identification and determination of active components in Angelica dahurica Benth and its medicinal preparation by capillary electrophoresis.
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A micellar electrokinetic capillary chromatography (MECC) method for the separation of three active components, imperatorin (IM), isoimperatorin (IO) and scopoletin (SC), in Angelica dahurica Benth and its preparation was developed. The optimum separation for these analytes was achieved using 10 mM
Supercritical fluid extraction for identification and determination of volatile metabolites from Angelica dahurica by GC-MS.
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The volatile components of Angelica dahurica were obtained by supercritical fluid extraction (SFE) method. These oils obtained were analyzed by GC-MS (identification and determination of metabolites). The compounds were identified according to their retention indices and mass spectra (electron
Preparative isolation and purification of coumarins from Angelica dahurica (Fisch. ex Hoffn) Benth, et Hook. f (Chinese traditional medicinal herb) by high-speed counter-current chromatography.
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A preparative high-speed counter-current chromatography (HSCCC) method for isolation and purification of coumarins from Angelica dahurica (Fisch. ex Hoffin) Benth, et Hook. f(Baizhi in Chinese) was successfully established by using n-hexane-methanol-water as the two-phase solvent system in gradient
[Effects of micro-fertilizers foliar spray on the content of main effective components of Angelica dahurica].
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The zinc, boron and molybdenum were sprayed on the foliage of Angelica dahurica du-ring the vigorous growth period to explore the effects of the combination of zinc, boron and molybdenum fertilizers on the content of main effective components of A. dahurica, and to find out the optimum spraying
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