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(1)-Eugenol-4-O-β-D-Furanosyl-(1→-2)-β-D-glucopyranoside
(1)-Syringaresnol-4-OBD-apiofuranosyl-(1→-2)-β-D-glucopyranoside
【Structural formula】
[Molecular formula and molecular weight] C 33 H 44 O 17 ; 712.
[Source] The dry bark of the legume Albizia julibrissin Durazz
【Properties】White powder
This product is soluble in methanol
Melting point: 119~121℃
Optical rotation: [a] D 20—40.
【Purity Check】
TLC
1.
Developing solvent of chloroform - methanol - water (13: 5: 2) was lower
Check the 5% phosphomolybdic acid ethanol solution, heat it at 90℃ until the spots are clearly colored, and then check under sunlight
2.
Developing agent chloroform-methanol- ethyl acetate -water (15:22:40:10) lower layer solution
Check the 5% phosphomolybdic acid ethanol solution, heat it at 90℃ until the spots are clearly colored, and then check under sunlight
High performance liquid chromatography
Chromatographic column Agilent C 18 , 10um (4.
Mobile phase acetonitrile-0.
Detection wavelength 204nm
【Structural identification】271,208
3396, 2939, 2877, 1612, 1596, 1463, 1328, 1221, 1120, 1067, 928, 827, 704
FAB-MS m/z: 711[M—H] -
1 H-NMR (DMSO) δ: 8.
13 C-NMR (DMSO) δ: 133.
【Storage】Keep refrigerated
.