char = S;code = 83
Separation and identification of flavonoids from fistular onion stalk (Allium fisturosum L. var. Caespitosum Makio).char = T;code = 84
Publication: J. Huazhong Univ. Sci. Technol. Med. Sci. 2010 Apr ;30(2)::255-7. :doi: 10.1007/s11596-010-0224-z.
Publication Date: 2010 Apr
Study Author(s): Fu, Qinqin;Liu, Jingyou;Zhang, Changgong;Zhou, Yinbo;Zhang, Geng;Ma, Dan;Yang, Xinzhou;
Institution: Department of Pharmacognosy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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The chemical constituents of fistular onion stalk obtained by supercritical CO(2) 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-beta-D(2-O-beta-D-glucopyranosyl)-glucopyranosides of kaempferol.
How is this determined?
