Data/hora: 07/06/2024 17:16:46

Biblioteca(s): 	Embrapa Meio Ambiente.	
Data corrente: 	30/06/1993	
Data da última atualização: 	06/08/2021	
Autoria: 	GARCEZ, F. R.; SCRAMIN, S.; NASCIMENTO, M. C. de; MORS, W. B.	
Afiliação: 	EMBRAPA-CNPMA.	
Título: 	Prenylated flavonoids as evolutionary indicators in the genus Dahlstedtia.	
Ano de publicação: 	1988	
Fonte/Imprenta: 	Phytochemistry, v.27, n.4, p.1079-1083, 1988.	
DOI: 	https://doi.org/10.1016/0031-9422(88)80277-2	
Idioma: 	Inglês	
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.	
Palavras-Chave: 	Dahlstedtia pentaphylla; Dahlstedtia pinnata; Evolutionary indicators; Flavonoid; Prenylated flavonoids; Substance.	
Thesagro: 	Leguminosae.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/224882/1/Scramin-Prenylated-flavonoids-1988.pdf	
Registro original: 	Embrapa Meio Ambiente (CNPMA)	
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