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- W1985186301 abstract "A preparative high-speed counter-current chromatography (HSCCC) method for the isolation and purification of 1″-O-glucosylcimifugin (1), 4′-O-β-d-glucosyl-5-O-methylvisamminol (2), cimifugin (3) and 3′-O-glucosylhamaudol (4) from the Chinese medicinal herb radix saposhnikoviae has been successfully developed. A sample of 300 mg of crude extract was separated using ethyl acetate:n-butanol:1% aqueous acetic acid (1:4:5, v/v) as the two-phase solvent system and yielded 102.4 mg of 1 and 81.6 mg of 2. During this separation 3 and 4 remained in the stationary phase, which was collected, evaporated to dryness and separated with another two-phase solvent system involving ethyl acetate:n-butanol:1% aqueous acetic acid (5:0.5:5, v/v) to yield 31.4 mg of 3 and 12.7 mg of 4. The purities of compounds 1–4 were 98.4, 98.7, 99.3 and 98.2%, respectively, as determined by HPLC. The chemical structures of these components were established by 1H-NMR and 13C-NMR. Copyright © 2008 John Wiley & Sons, Ltd." @default.
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- W1985186301 date "2008-01-01" @default.
- W1985186301 modified "2023-09-27" @default.
- W1985186301 title "Separation and purification of four chromones from radix saposhnikoviae by high-speed counter-current chromatography" @default.
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- W1985186301 doi "https://doi.org/10.1002/pca.984" @default.
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