Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)

Detalhes bibliográficos
Autor(a) principal: Branco,Alexsandro
Data de Publicação: 2002
Outros Autores: Pinto,Ângelo C., Ifa,Demian R., Braz-Filho,Raimundo
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=S0103-50532002000300005
Resumo: From the leaves of Vellozia candida Mikan (Velloziaceae) the new flavonol 3',4',5,7-tetrahydroxy-3,6-dimethoxy-8-methylflavone and its known 7-O-methyl derivative, 3',4',5-trihydroxy-3,6,7-trimethoxy-8-methylflavone, were isolated and characterized by spectral data, including 2D NMR and tandem mass spectrometry experiments. The 5-hydroxy-3,3',4',6,7-pentamethoxy-8-methylflavone derivative was obtained by methylation with diazomethane.
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spelling Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)VelloziaceaeVellozia candidaflavonoidsESI-MS/MSFrom the leaves of Vellozia candida Mikan (Velloziaceae) the new flavonol 3',4',5,7-tetrahydroxy-3,6-dimethoxy-8-methylflavone and its known 7-O-methyl derivative, 3',4',5-trihydroxy-3,6,7-trimethoxy-8-methylflavone, were isolated and characterized by spectral data, including 2D NMR and tandem mass spectrometry experiments. The 5-hydroxy-3,3',4',6,7-pentamethoxy-8-methylflavone derivative was obtained by methylation with diazomethane.Sociedade Brasileira de Química2002-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000300005Journal of the Brazilian Chemical Society v.13 n.3 2002reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532002000300005info:eu-repo/semantics/openAccessBranco,AlexsandroPinto,Ângelo C.Ifa,Demian R.Braz-Filho,Raimundoeng2002-07-01T00:00:00Zoai:scielo:S0103-50532002000300005Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2002-07-01T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)
title Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)
spellingShingle Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)
Branco,Alexsandro
Velloziaceae
Vellozia candida
flavonoids
ESI-MS/MS
title_short Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)
title_full Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)
title_fullStr Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)
title_full_unstemmed Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)
title_sort Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)
author Branco,Alexsandro
author_facet Branco,Alexsandro
Pinto,Ângelo C.
Ifa,Demian R.
Braz-Filho,Raimundo
author_role author
author2 Pinto,Ângelo C.
Ifa,Demian R.
Braz-Filho,Raimundo
author2_role author
author
author
dc.contributor.author.fl_str_mv Branco,Alexsandro
Pinto,Ângelo C.
Ifa,Demian R.
Braz-Filho,Raimundo
dc.subject.por.fl_str_mv Velloziaceae
Vellozia candida
flavonoids
ESI-MS/MS
topic Velloziaceae
Vellozia candida
flavonoids
ESI-MS/MS
description From the leaves of Vellozia candida Mikan (Velloziaceae) the new flavonol 3',4',5,7-tetrahydroxy-3,6-dimethoxy-8-methylflavone and its known 7-O-methyl derivative, 3',4',5-trihydroxy-3,6,7-trimethoxy-8-methylflavone, were isolated and characterized by spectral data, including 2D NMR and tandem mass spectrometry experiments. The 5-hydroxy-3,3',4',6,7-pentamethoxy-8-methylflavone derivative was obtained by methylation with diazomethane.
publishDate 2002
dc.date.none.fl_str_mv 2002-06-01
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=S0103-50532002000300005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000300005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532002000300005
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.13 n.3 2002
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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