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[Chemical constituents from ethyl acetate extraction of Prunus mume].
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Eight compounds were isolated from the ethyl acetate extraction of Prunus mume by column chromatography. On the basis of physicochemical properties and spectrum analysis, these compounds were identified as isoquercitrin-6″-O-benzoate(1), pinoresinol(2), naringin(3), ethyl-β-D-glucopyranoside(4),
[Studies on the chemical constituents of flowers of Prunus mume].
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OBJECTIVE
To study the chemical constituents of flowers of Prunus mume.
METHODS
Compounds were separated by silica gel. Their structures were identified and elucidated by spectral analysis and chemical methods.
RESULTS
Eight compounds were obtained and identified as benzoic acid (I), isorhamnetin
An in vitro evaluation of human cytochrome P450 3A4 inhibition by selected commercial herbal extracts and tinctures.
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Serial dilutions of 21 commercial ethanolic herbal extracts and tinctures, and 13 related pure plant compounds have been analyzed for their in vitro cytochrome P450 3A4 (CYP3A4) inhibitory capability via a fluorometric microtitre plate assay. Roughly 75% of the commercial products and 50% of the
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