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| Registros recuperados : 32 | |
| Registros recuperados : 32 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
30/06/1993 |
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Data da última atualização: |
06/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GARCEZ, F. R.; SCRAMIN, S.; NASCIMENTO, M. C. de; MORS, W. B. |
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Afiliação: |
EMBRAPA-CNPMA. |
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Título: |
Prenylated flavonoids as evolutionary indicators in the genus Dahlstedtia. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
Phytochemistry, v.27, n.4, p.1079-1083, 1988. |
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DOI: |
https://doi.org/10.1016/0031-9422(88)80277-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Three chalcones, two beta-hydroxychalcones, four flavanones, six flavones, four flavonols, one rotenoid and one pterocarpan were isolated from the roots of Dahlstedtia pinnata and D. pentaphylla. With the exception of the pterocarpan, all the compounds exhibit prenylation in the A ring, a characteristic of flavonoids produced by species of the Tephrosieae. Of the 21 flavonoids identified, five (2 flavanones and 3 flavones) are new as naturally occurring compounds. A neat distinction in the biosynthetic capability of the two species, leading to the production of flavanones and flavonols in D. pentaphylla, but not in D. pinnata, is observed. In this latter species, biosynthesis is totally oriented toward dehydrogenation, producing flavones. By both criteria-higher oxidation state and suppression of enzyme systems-D. pinnata is the more advanced species. |
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Palavras-Chave: |
Dahlstedtia pentaphylla; Dahlstedtia pinnata; Evolutionary indicators; Flavonoid; Prenylated flavonoids; Substance. |
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Thesagro: |
Leguminosae. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/224882/1/Scramin-Prenylated-flavonoids-1988.pdf
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Marc: |
LEADER 01632naa a2200253 a 4500
001 1010582
005 2021-08-06
008 1988 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/0031-9422(88)80277-2$2DOI
100 1 $aGARCEZ, F. R.
245 $aPrenylated flavonoids as evolutionary indicators in the genus Dahlstedtia.$h[electronic resource]
260 $c1988
520 $aAbstract: Three chalcones, two beta-hydroxychalcones, four flavanones, six flavones, four flavonols, one rotenoid and one pterocarpan were isolated from the roots of Dahlstedtia pinnata and D. pentaphylla. With the exception of the pterocarpan, all the compounds exhibit prenylation in the A ring, a characteristic of flavonoids produced by species of the Tephrosieae. Of the 21 flavonoids identified, five (2 flavanones and 3 flavones) are new as naturally occurring compounds. A neat distinction in the biosynthetic capability of the two species, leading to the production of flavanones and flavonols in D. pentaphylla, but not in D. pinnata, is observed. In this latter species, biosynthesis is totally oriented toward dehydrogenation, producing flavones. By both criteria-higher oxidation state and suppression of enzyme systems-D. pinnata is the more advanced species.
650 $aLeguminosae
653 $aDahlstedtia pentaphylla
653 $aDahlstedtia pinnata
653 $aEvolutionary indicators
653 $aFlavonoid
653 $aPrenylated flavonoids
653 $aSubstance
700 1 $aSCRAMIN, S.
700 1 $aNASCIMENTO, M. C. de
700 1 $aMORS, W. B.
773 $tPhytochemistry$gv.27, n.4, p.1079-1083, 1988.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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