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6 resultados
[Studies on chemical constituents of rhizomes of Sophora tonkinensis].
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Thirteen compounds were isolated from the 95% aqueous EtOH extract of the rhizomes of Sophora tonkinensis by a combination of various chromatographic techniques including column chromatography over silica gel, Sphadex LH-20, MCI, ODS, and semi-preparative HPLC.Their structures were elucidated as
Anti-inflammatory effects of chemical components from Ginkgo biloba L. male flowers on lipopolysaccharide-stimulated RAW264.7 macrophages.
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Ginkgo biloba L., well known as living fossil, have various pharmacological activities. Eighteen compounds were isolated from Ginkgo male flowers including a novel matsutake alcohol glycoside, Ginkgoside A (1), and 17 known compounds-calaliukiuenoside (2), benzylalcohol O-α-l-arabinopyranosyl-(1 →
Chemical constituents of Arisaema franchetianum tubers.
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A novel pyrrolidine alkaloid, (2R*,3S*,5S*)-N,2-dimethyl-3-hydroxy-5-(10-phenyldecyl)pyrrolidine (1), and 17 known compounds were isolated from Arisaema franchetianum Engl. (Araceae) tubers. The 17 compounds were bergenin (2), emodin (3), caffeic acid (4), nobiletin (5),
Cytotoxic Activity and Chemical Composition of the Root Extract from the Mexican Species Linum scabrellum: Mechanism of Action of the Active Compound 6-Methoxypodophyllotoxin.
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The cytotoxic activity and the chemical composition of the dichloromethane/methanol root extract of Linum scabrellum Planchon (Linaceae) were analyzed. Using NMR spectra and mass spectrometry analyses of the extract we identified eight main constituents: oleic acid (1), octadecenoic acid (2),
[Bioactive constituents inhibiting TNF-alpha production in fresh rhizome of Pinellia ternata].
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OBJECTIVE
To study the bioactive constituents of the fresh rhizome of Pinellia ternata, and provide the scientific basis for quality control.
METHODS
Various chromatographic techniques were used to separate and purify the chemical constituents, and their chemical structures were determined on the
Chemical Constituents and an Antineuroinflammatory Lignan, Savinin from the Roots of Acanthopanax henryi.
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The phytochemical investigation on the roots of Acanthopanax henryi (Araliaceae) resulted in the discovery of twenty compounds whose chemical structures were elucidated by the analysis of 1D-, 2D-NMR, mass spectrometry data, other physicochemical properties, and a comparison of the spectral
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