Data/hora: 05/06/2024 01:26:27

Provedor de dados: 	36	
País: 	Brazil	
Título: 	Pentacyclic triterpenes and steroids from the stem bark of uchi (Sacoglottis uchi, Humiriaceae)	
Autores: 	Abreu,Viviane Gomes da Costa; Corrêa,Geone Maia; Lagos,Izandina Aparecida dos Santos; Silva,Roqueline Rodrigues; Alcântara,Antônio F. de C.	
Data: 	2013-12-01	
Ano: 	2013	
Palavras-chave: 	Humiriaceae; Medicinal plants; Amazon Region; Triterpenes.	
Resumo: 	The ethanol extract from stem bark of Sacoglottis uchi Huber (popularly known as “uchi” in the Amazon Region) was submitted to chromatographic fractionation. The dichloromethane fractions provided the pentacyclic triterpene 3-oxo-friedelin (1). The dichloromethane:methanol fractions provided the pentacyclic triterpenes pseudotaraxasterol (2), lupeol (3), a-amyrin (4), betulin (5), and methyl 2ß,3ß-dihydroxy-urs-12-en-28-oate (6) and a mixture of the steroids sitosterol (7) and stigmasterol (8). Their chemical structures were determined by NMR spectroscopy and comparison with spectroscopic data from the literature. All compounds are described for the first time in this species.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400015	
Editor: 	Instituto Nacional de Pesquisas da Amazônia	
Relação: 	10.1590/S0044-59672013000400015	
Formato: 	text/html	
Fonte: 	Acta Amazonica  v.43 n.4 2013	
Fonte: 	info:eu-repo/semantics/openAccess