Estudo químico de Guatteria duckeana

Abstract

The chemicals constituents of the majority species of Annonaceae family, have economical, chemistry and medicinal importances, justifying the chemical study of some species that are not being s t u d i e d . For this reason, emerged the interest for the chemical study of Guatteria duckeana, after a revision from published subjects about the chemical family. The benzenic extract from the wood of this species provided a mixture of sytosterol, stygmasterol and 24 methyl-cholesterol (GD - 7P), N-acetylanonaine (GD - 1P), N-acetyl-puterine (GD - 2P), 1 vinyl-3,4-dimethoxy phenanthrene (GD - 3P), 1,2-methylenodioxy- -11 methoxy-7-oxo-aporphine (GD - 6P), 8-hidroxy-6-methoxy-3,5- dimethyl-3,4-dihydroisocoumarin (GD - 5P). The two last substances are products of fungus metabolism as the available wood in this study was infested by this microorganism. When the substance 1-vinyl-3,4-dimethoxy-phenanthrene (GD -3P) and alkaloids aporphinics occurred in Guatteria duckeana allowed the biogenetic creation for the phenanthrenic product. The constituents isolation involved chromatographycs methods. Spectrals features were used for the structural elucidation of the isolated substances.