【摘 要】
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The chemical constituents of fistular onion stalk obtained by supercritical CO2 extraction were separated and purified by silica gel and sephadex LH-20 gel colu
【机 构】
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Department of Pharmacognosy,Tongji Medical College,Huazhong University of Science and Technology,Cen
【出 处】
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Journal of Huazhong University of Science and Technology(Med
论文部分内容阅读
The chemical constituents of fistular onion stalk obtained by supercritical CO2 extraction were separated and purified by silica gel and sephadex LH-20 gel column chromatography and the preparative TLC method and four flavonoids were obtained.On the basis of the spectral data,they were structurally identified as(+)-catechin,(-)-epicatechin,astragalin,and 3-O-β-D(2-O-β-D-glucopyranosyl)-glucopyranosides of kaempferol.
The chemical constituents of fistular onion stalk obtained by supercritical CO2 extraction were separated and purified by silica gel and sephadex LH-20 gel column chromatography and the preparative TLC method and four flavonoids were obtained. On the basis of the spectral data, they were structurally identified (-) - epicatechin, astragalin, and 3-O-β-D (2-O-β-D-glucopyranosyl) -glucopyranosides of kaempferol as (+) - catechin,
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