Prenylated flavonoids from the stem wood of Commiphora opobalsamum (L.) Engl. (Burseraceae)

In this study, fractionation of acetone extract of the stem wood of Commiphora opobalsamum (L.) Engl. (Burseraceae) has been carried and two new prenylated flavonoids, 6-(3,3-Dimethylallyl)-2,3-dihydrokaempferol-3-β-O-glucoside 5 and 6-(3,3-Dimethylallyl) naringenin-7-O-β-glucoside 6, together with four known flavonoids 6-(3,3-Dimethylallyl)-2,3-diyhdrokaempferol 1, aromadendrin 3, kaempferol 2 and quercetin 4 were isolated. These compounds except quercetin are reported from this plant for the first time. Their structures were elucidated on the basis of spectroscopic analysis and comparison with published data for the known compounds.