%0 Journal Article
%T Macrocarpane, a new sesquiterpene skeleton from the leaves of Porcelia macrocarpa
%A Chaves
%A Mariana H.
%A Lago
%A Jo£¿o Henrique G.
%A Roque
%A N¨ªdia F.
%J Journal of the Brazilian Chemical Society
%D 2003
%I Sociedade Brasileira de Qu¨ªmica, SBQ
%R 10.1590/S0103-50532003000100004
%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 (a-cubebene, a-copaene, germacrene-d, bicyclogermacrene, g-cadinene, d-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-3b-ol and sitosta-5,22,25-trien-3b-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_abstract&pid=S0103-50532003000100004&lng=en&nrm=iso&tlng=en