Two novel prenylated flavones from the aerial parts of Melicope micrococca

Two novel prenylated flavones, 3,5,4'-trihydroxy-8,3'-dimethoxy-7-(3-methyl but-2-enoxy)flavone and 3,5,8,4'-tetrahydroxy-7,3'-dimethoxy-6-(3-methylbut -2-enyl)flavone have been isolated from the aerial parts of Melicope microc occa (Rutaceae) together with the known compounds, quercetin 3-O-beta-D-glu copyranoside, isorhamnetin 3-O-rutinoside, the acridone alkaloid arborinine , sitosterol 3 beta-O-glucopyranoside (daucosterol) and 5-O-methyl-myo-inos itol (sequoyitol). The structures of all compounds were elucidated by spect roscopic methods. (C) 1999 Elsevier Science Ltd. All rights reserved.