%0 Journal Article %T Chemical composition and antifungal activity of the essential oil of Hyptis ovalifolia Benth. (Lamiaceae) %A Oliveira %A Cec¨ªlia M. A. de %A Silva %A Maria do Ros¨¢rio R. %A Kato %A Luc¨ªlia %A Silva %A Cleuza C. da %A Ferreira %A Heleno D. %A Souza %A L¨²cia K. H. %J Journal of the Brazilian Chemical Society %D 2004 %I Sociedade Brasileira de Qu¨ªmica, SBQ %R 10.1590/S0103-50532004000500023 %X the leaves of hyptis ovalifolia benth. (lamiaceae) were subjected to hydrodistillation and the resulting volatiles were investigated by gc/ms. the main constituent representing 60% of the essential oil was isolated by column chromatography and identified by spectroscopic methods as (r)-6-[(z)-1-heptenyl]-5,6-dihydro-2h-pyran-2-one (1). this compound showed strong in vitro activity against four dermatophyte fungi microsporum canis, microsporum gypseum, tricophyton mentagrophytes, and tricophyton rubrum (a total of 60 strains) with a minimal inhibitory concentration observed in the range of 125-7.8 mg ¦Ìl-1. %K hyptis ovalifolia %K essential oil %K antifungal activity %K lamiaceae %K (r)-6-[(z)-1-heptenyl]-5 %K 6-dihydro-2h-pyran-2-one. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-50532004000500023&lng=en&nrm=iso&tlng=en