Flavones from the Stem of Aquilaria sinensis
白木香树干中的黄酮类成分

Five flavones were isolated from the ethanol extraction of the stem of Aquilaria sinensis.On the basis of spectral analysis,their structures were elucidated as:apigenin-7,4'-dimethylethers(1),5-hydroxyl-7,3',4'-trimethoxyflavone(2),7,4'-dimethyl-luteolin(3),genkwanin(4)and 4',5-dihydroxy-3',7-dimethoxyflavone(5).All the compounds were isolated from the stem of this species for the first time.