Rodrigues, Vanessa GregórioDuarte, Lucienir PainsSilva, Grácia Divina de FátimaSilva, Fernando CésarGóes, Jefferson Vieira deTakahashi, Jacqueline AparecidaPimenta, Lúcia Pinheiro SantosVieira Filho, Sidney Augusto2014-11-142014-11-142012RODRIGUES, V. G. et al. Evaluation of antimicrobial activity and toxic potential of extracts and triterpenes isolated from Maytenus imbricata. Química Nova, v. 35, p. 1375-1380, 2012. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000700017>. Acesso em: 20 ago. 2014.1678-7064http://www.repositorio.ufop.br/handle/123456789/3856The phytochemical study of hexane/ethyl ether (1:1) extract of the roots of M. imbricata, Celastraceae, resulted in the isolation and characterization of six known triterpenes: 11α-hydroxylup-20(29)-en-3-one, previously isolated from this species besides, 3β,11α- di-hydroxylup-20(29)-ene, 3,7-dioxofriedelane, 3-oxo-29-hydroxyfriedelane, tingenone and 6-oxo-tingenol. The chemical structures of these triterpenes were established by spectrometric data (IR, 1H and 13C NMR) and through comparison with literature data. The hexane/ethyl ether (1:1), ethyl acetate and methanol extracts, and 11α-hydroxylup-20(29)-en-3-one, tingenone and 6-oxo-tingenol, showed antimicrobial properties on in vitro assays. All extracts and triterpenes, except 3β,11α-di-hydroxylup-20(29)-ene, presented toxicity demonstrated by the larvicidal effect test using Artemia salina.en-USMaytenus imbricataCelastraceaePentacyclic triterpenesArtigo publicado em periodicoA Sociedade Brasileira de Química dá permissão à UFOP para reproduzir no RI/UFOP, uma cópia em formato eletrônico dos artigos completos, sem nenhuma edição e/ou modificação, publicados na revista Química Nova, que tenham como autores seus alunos e/ou professores. Fonte: Email do editor de 17 set. 2013.http://dx.doi.org/10.1590/S0100-40422012000700017