Five flavonoid glycosides were isolated from the methanol and ethyl acetate fractions of the ethanol extract of Diphylleia sinensi by using various chromatographic methods,including silica gel,MCI gel,Sephadex LH-20,ODS and semi-preparative HPLC.The structures of the isolated compounds were identified as diphyflavo-noid A(1),diphyflavonoid B(2),quercetin-3-O-β-D-glucopyranoside(3),kaempferol-3-O-β-D-glucopyranoside(4),kaempferol-3-O-(6"-O-acetyl)-β-D-glucopyranoside(5)by spectroscopy methods(1D NMR,2D NMR,UV,IR,and MS).Compounds 1 and 2 were two new flavonoid glycosides,and compounds 3 and 5 were isolated from the genus Diphylleia for the first time.
关键词
窝儿七/化学成分/黄酮苷类化合物/提取分离/山荷叶属
Key words
Diphylleia sinensi/chemical constituent/flavonoid glycoside/extraction and isolation/Diphylleia