OBJECTIVE To investigate the chemical constituents of Oldenladia diffusa (Willd.) Roxb.. METHODS Polyamide column, Sephadcx LH-20 column and silica gel column et al, were used to separate and purify the chemical components. The structures were elucidated on the basis of physic-chemical properties and spectral data. RESULTS Five compounds were isolated and identified as amentoflavone (Ⅰ), 2-hydroxy-l-tnethoxyanthraquinone (Ⅱ), 1, 3-dimethoxy-2-hydroxyanthraquinone ( Ⅲ ), p-coumaric acid ( Ⅳ ) and E-6-O-p-coumaroyl scandoside methyl-ester(Ⅴ) .CONCLUSION Compound Ⅰ,Ⅱ and Ⅲ were obtained from this plant for the first time.
WU Kong-song;ZHNG Kun;TN Gui-shn;ZENG Gung-yo;ZHOU Ying-jun.
Studies on constituents of Oldenladia diffusa [J]. Chinese Pharmaceutical Journal, 2005, 39(11): 817-818
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