抄録
Three new flavonoids isolated from the roots of Euchresta japonica, designated as euchrenones a4, b4 and b5, were identified as 5, 7-dihydroxy-6, 8-di(γ, γ-dimethylallyl)-[6'''', 6''''-dimethylpyrano(2'''', 3'''' : 4', 3')]flavanone, 5, 7-dihydroxy-2'-methyoxy-4', 5'-methylenedioxy-6, 8-di(γ, γ-dimethylallyl)isoflavone and 5, 7, 2'-trihydroxy-4', 5'-methylene-dioxy-6, 8-di(γ, γ-dimethylallyl)isoflavone by means of spectral analysis.
