Flavanones from Vernonia diffusa

Detalhes bibliográficos
Autor(a) principal: Carvalho,Mário Geraldo de
Data de Publicação: 1999
Outros Autores: Costa,Patricia Miranda da, Abreu,Heber dos Santos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000200015
Resumo: From the methanolic extract of the wood of Vernonia diffusa two flavanones were isolated and identified: hesperidin and a new flavanone, 3'-methylhesperetin (homoesperetin) and sucrose, which was identified as its acetyl derivative. The homoesperetin was identified as the aglicone obtained in the hydrolysis of the new natural flavanone glycoside, homoesperetin-7-O-rutinoside. From the dichloromethane extract, a mixture of sitosterol and stigmasterol was isolated together with a mixture of aliphatic acids. The new octaacetylhesperidin derivative was also prepared. Structural determination was made by ¹H and 13C-NMR spectrometric data including DEPT, ¹Hx¹H-COSY, and ¹Hx13C-COSY and NOEDIFF techniques.
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spelling Flavanones from Vernonia diffusaVernonia diffusacompositaehomoesperetinflavanonesFrom the methanolic extract of the wood of Vernonia diffusa two flavanones were isolated and identified: hesperidin and a new flavanone, 3'-methylhesperetin (homoesperetin) and sucrose, which was identified as its acetyl derivative. The homoesperetin was identified as the aglicone obtained in the hydrolysis of the new natural flavanone glycoside, homoesperetin-7-O-rutinoside. From the dichloromethane extract, a mixture of sitosterol and stigmasterol was isolated together with a mixture of aliphatic acids. The new octaacetylhesperidin derivative was also prepared. Structural determination was made by ¹H and 13C-NMR spectrometric data including DEPT, ¹Hx¹H-COSY, and ¹Hx13C-COSY and NOEDIFF techniques.Sociedade Brasileira de Química1999-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000200015Journal of the Brazilian Chemical Society v.10 n.2 1999reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50531999000200015info:eu-repo/semantics/openAccessCarvalho,Mário Geraldo deCosta,Patricia Miranda daAbreu,Heber dos Santoseng2002-10-23T00:00:00Zoai:scielo:S0103-50531999000200015Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2002-10-23T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Flavanones from Vernonia diffusa
title Flavanones from Vernonia diffusa
spellingShingle Flavanones from Vernonia diffusa
Carvalho,Mário Geraldo de
Vernonia diffusa
compositae
homoesperetin
flavanones
title_short Flavanones from Vernonia diffusa
title_full Flavanones from Vernonia diffusa
title_fullStr Flavanones from Vernonia diffusa
title_full_unstemmed Flavanones from Vernonia diffusa
title_sort Flavanones from Vernonia diffusa
author Carvalho,Mário Geraldo de
author_facet Carvalho,Mário Geraldo de
Costa,Patricia Miranda da
Abreu,Heber dos Santos
author_role author
author2 Costa,Patricia Miranda da
Abreu,Heber dos Santos
author2_role author
author
dc.contributor.author.fl_str_mv Carvalho,Mário Geraldo de
Costa,Patricia Miranda da
Abreu,Heber dos Santos
dc.subject.por.fl_str_mv Vernonia diffusa
compositae
homoesperetin
flavanones
topic Vernonia diffusa
compositae
homoesperetin
flavanones
description From the methanolic extract of the wood of Vernonia diffusa two flavanones were isolated and identified: hesperidin and a new flavanone, 3'-methylhesperetin (homoesperetin) and sucrose, which was identified as its acetyl derivative. The homoesperetin was identified as the aglicone obtained in the hydrolysis of the new natural flavanone glycoside, homoesperetin-7-O-rutinoside. From the dichloromethane extract, a mixture of sitosterol and stigmasterol was isolated together with a mixture of aliphatic acids. The new octaacetylhesperidin derivative was also prepared. Structural determination was made by ¹H and 13C-NMR spectrometric data including DEPT, ¹Hx¹H-COSY, and ¹Hx13C-COSY and NOEDIFF techniques.
publishDate 1999
dc.date.none.fl_str_mv 1999-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000200015
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000200015
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50531999000200015
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.10 n.2 1999
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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