%0 Journal Article
%T Macrocarpane, a new sesquiterpene skeleton from the leaves of Porcelia macrocarpa
%A Chaves Mariana H.
%A Lago Jo£¿o Henrique G.
%A Roque N¨ªdia F.
%J Journal of the Brazilian Chemical Society
%D 2003
%I Sociedade Brasileira de Qu¨ªmica, SBQ
%X The volatile oil and the hexane extract from the leaves of Porcelia macrocarpa (Warm.) R.E. Fries, Annonaceae, were submitted to chromatographic separations. Nine sesquiterpenes (alpha-cubebene, alpha-copaene, germacrene-D, bicyclogermacrene, gamma-cadinene, delta-cadinene, spathulenol, globulol and cis-cubenol) and one diterpene (phytol) were identified in the volatile oil (83.1 % in weight). Two sesquiterpenes (spathulenol and macrocarp-11(15)-en-8-ol), the latter with a novel skeleton, one diterpene (phytol) and two steroids (sistosta-5,25-dien-3beta-ol and sitosta-5,22,25-trien-3beta-ol) were isolated from the hexane extract. These compounds were characterized by 1H and 13C NMR spectroscopy, including bidimensional analysis and mass spectrometry.
%K macrocarpane
%K spathulenol
%K steroids
%K sesquiterpenes
%K Porcelia macrocarpa
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100004