Data/hora: 04/06/2024 18:24:58

Provedor de dados: | 42
País: | Brazil
Título: | Phenolic compounds from the rhizome of Renealmia nicolaioides Loes.: a new diarylheptanoid
Autores: | GEVÚ,KATHLYN V.; CARVALHO,MÁRIO G. DE; SILVA,ILNA G. DA; LIMA,HELENA R.P.; CASTRO,ROSANE N.; CUNHA,MAURA DA.
Data: | 2019-01-01
Ano: | 2019
Palavras-chave: | Flavonoid; Alpinieae tribe; Zingiberaceae; Underground organ.
Resumo: | Abstract: This study aims to identify phenolic compounds in dichloromethane and methanolic extracts of the rhizome of Renealmia nicolaioides collected in the North Region of Brazil. Two known diarylheptanoids, 1,7-bis(4-hydroxyphenyl)-(1E)-1-hepten-3-one (1), and 5R-1,7-bis(4-hydroxyphenyl)-1E-hepten-5-ol (2), and a new one (1R,2S,5S)-2-hydroxy-1,7(p-hydroxyphenyl)-centrolobine (3), as well as one flavonoid, 3-metoxi-quercetin (4) were isolated by chromatographic procedure and identified by spectroscopic techniques (1H and13C NMR, HRMS and CD). The acetyl derivative of 2 was used to confirm its structure. All four compounds are reported for the first time for this genus, and this is the first occurrence of compound 1 as a natural metabolite. The results reported here are unprecedented for the genus Renealmia.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100403
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201920180312
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.91 n.1 2019
Fonte: | info:eu-repo/semantics/openAccess