2010•Acta Scientiarum Naturalium Universitatis SunyatseniRequires access
Flavones of Vernonia spirei Gandog
Yunhua Wang, Wang Jun, Wenzhe Ma
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Abstract
The chemical constituents of Vernonia spirei Gandog were studied.The constituents were separated and purified from MeOH extract of the whole plant with column chromatographic methods through silica gel,RP-18 silica gel,Sephadex LH-20,HPLC,and preparative TLC.Their chemical structures were characterized by spectroscopic methods including NMR and EIMS.The result showed that Vernonia spirei Gandog contained two components including 5,7,4'-trihydroxy-6,3'-dimethoxyflavone(Ⅰ),5,3'-dihydroxy-6,7,4'-trimethoxyflavone(Ⅱ).These compounds were obtained from this genus for the first time.