Do extrato etanólico da madeira de Annona dióica foram isoladas as conhecidas 1-aza-4metilantraquinona, lasiodiplodina, liriodenina, uma mistura de 1-aza-5,9,10-trimetoxi-4-metil-2-oxo-1,2-diidroantraceno e 1-aza-8,9,10-trimetoxi-4-metil-2-oxo-1,2-diidroantraceno (geovanina) e o novo alcalóide 1,2-metilenodioxi-6α,7-desidroaporfina-4(S)-(4-hidroxi-3,5-dimetoxifenil)-3,4-diidro-2(1H)-piridinona. As estruturas destes produtos naturais foram elucidadas com base em seus dados espectrais, inclusive experiências de NOE e espectros de RMN 2D de correlação homonuclear 1 H-1 H-COSY e heteronuclear 1 H-13 C-COSY-n J CH (HMQC, n=1 e HMBC, n=2 e 3). From the ethanolic extract of the wood of Annona dioica were isolated the known 1-aza-4methylanthraquinone, lasiodiplodin, liriodenine, a mixture of 1-aza-5,9,10-trimethoxy-4-methyl-2oxo-1,2-dihydroanthracene and 1-aza-8,9,10-trimethoxy-4-methyl-2-oxo-1,2-dihydroanthracene (geovanine) and the new alkaloid 1,2-methylenedioxy-6α,7-dehydroaporphine-4(S)-(4-hydroxy-3,5-dimethoxyphenyl)-3,4-dihydro-2(1H)-pyridinone. The structures of these natural products were elucidated on the basis of their spectral data, including NOE experiments and homonuclear 1 H-1 H-COSY e heteronuclear 1 H-13 C-COSY-n J CH (HMQC, n=1 and HMBC, n=2 and 3) 2D-shift-correlated NMR spectra.