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Schaftoside
Schaftoside
【Structural formula】
[Molecular formula and molecular weight] C 26 H 28 O 14 ; 564.
[Source] The dry aerial part of the legume Desmodium styraci folium (Osb.
【Properties】Yellow crystalline powder
This product is soluble in methanol and ethanol , but hardly soluble in chloroform , ether , hexane , and carbon tetrachloride
Melting point: 237~239℃
【Purity Check】
TLC
1.
Developing agent ethyl acetate-butanone-formic acid (5:1:1)
After checking the color development of 1% aluminum trichloride ethanol solution, check under UV light (365nm)
2.
Developing solvent ethyl acetate - methanol - water (6:3:1)
After checking the color development of 1% aluminum trichloride ethanol solution, check under ultraviolet light (254nm)
High performance liquid chromatography
Chromatographic column Agilent C 18 , 5um (4.
Mobile phase methanol-water (32:68), 1ml/min
Detection wavelength: 272nm
【Structural identification】333,302(sh),272
3375(-OH), 1653(C=O), 1620(C=C), 1581, 1088(C—O)
FAB-MS m/z: 565[M+H] +
1 H-NMR (DMSO) δ: 6.
13 C-NMR (DMSO) δ: 164.
【Storage】Dry and airtight
Related Links : (1)-Eugenol-4-O-β-D-Aprilofuranosyl-(1→-2)-β-D-glucopyranoside