Two Dibenzylbutyrolactol derivatives and other chemical constituents from Aristolochia peltato-deltoidea

dc.creatorSILVA, Ana Paula Freitas da
dc.creatorPALMEIRA JUNIOR, Sebastião Ferreira
dc.creatorCONSERVA, Lucia Maria
dc.creatorGUILHON, Giselle Maria Skelding Pinheiro
dc.date2013-05-28T13:00:16Z
dc.date2013-05-28T13:00:16Z
dc.date1999-04
dc.date.accessioned2023-09-28T15:48:03Z
dc.date.available2023-09-28T15:48:03Z
dc.identifierSILVA, Ana Paula Freitas da, et al. Two Dibenzylbutyrolactol derivatives and other chemical constituents from Aristolochia peltato-deltoidea. Journal of the Brazilian Chemical Society, São Paulo, v. 10, n. 2, p. 122-126, mar./abr. 1999. Disponível em: <http://www.scielo.br/pdf/jbchs/v10n2/a09v10n2.pdf>. Acesso em: 27 maio 2013. <http://dx.doi.org/10.1590/S0103-50531999000200009>.
dc.identifier1678-4790
dc.identifier0103-5053
dc.identifierhttp://repositorio.ufpa.br/jspui/handle/2011/3913
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9021434
dc.descriptionThe hexane extract from the aerial parts of Aristolochia peltato-deltoidea Hoehne (Aristolochiaceae) afforded two new epimeric lignans of the type dibenzylbutyrolactol, rel-(8R, 8 S, 9S)-3,4-dimethoxy-3 ,4 -methylenedioxy-9b-ethoxy- and rel-(8R, 8 S, 9R)-3,4-dimethoxy-3 ,4 -methylenedioxy-9a-ethoxy-lignans-8.8 ,9.O.9 , besides a benzofuran neolignan, known as eupomatenoid-7, a-tocopherylquinone, b-sitosterol and stigmasterol. From the chloroform extract were isolated two diastereomeric dibenzylbutyrolactone lignans: rel-(8R, 8 R)- and rel-(8R, 8 S)-3,4-dimethoxy-3 ,4 -methylenedioxy-9-oxo-lignans-8.8 ,9.O.9 . Chemical composition analysis by GC/MS of the non polar fractions from the hexane extract was also carried out and ten components were identified. The structures of the isolated compounds were elucidated utilizing spectrometric methods.
dc.descriptionDo extrato hexânico das partes aéreas de Aristolochia peltato-deltoidea Hoehne (Aristolochiaceae) foram isolados duas novas lignanas epiméricas do tipo dibenzilbutirolactol, rel-(8R, 8 S, 9S)-3,4-dimetoxi-3 ,4 -metilenodioxi-9b-etoxi- e rel-(8R, 8 S, 9R)-3,4-dimetoxi-3 ,4 -metilenodioxi-9a-etoxi-lignanas-8.8 ,9.O.9 , além da neolignana benzofurânica eupomatenóide-7, a-tocoferilquinona, b-sitosterol e estigmasterol. Do extrato clorofórmico foram isoladas duas lignanas dibenzilbutirolactonas diasteroisoméricas: rel-(8R, 8 R)- e rel-(8R, 8 S)-3,4-dimetoxi-3 ,4 -metilenodioxi-9-oxo-lignanas-8.8 ,9.O.9 . A composição química das frações apolares do extrato hexânico também foi analisada por CG/EM. Dentre os componentes detectados, dez foram identificados. As estruturas dos compostos isolados foram elucidadas utilizando-se métodos espectrométricos.
dc.formatapplication/pdf
dc.languageeng
dc.rightsAcesso Aberto
dc.subjectAnálise química
dc.subjectAristolochia peltato-deltoidea
dc.subjectAristolochiaceae
dc.subjectBenzofuran neolignan
dc.subjectDibenzylbutyrolactol lignans
dc.subjectA-tocopherylquinone
dc.subjectIlha de Maçaranduba - PA
dc.subjectPará - Estado
dc.subjectAmazônia brasileira
dc.titleTwo Dibenzylbutyrolactol derivatives and other chemical constituents from Aristolochia peltato-deltoidea
dc.typeArtigo de Periódico


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