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Acta Amazonica

Print version ISSN 0044-5967On-line version ISSN 1809-4392

Acta Amaz. vol.24 no.1-2 Manaus  1994

http://dx.doi.org/10.1590/1809-43921994242058 

QUÍMICA

PRENYLATED XANTHONES FROM Rheedia acuminata (reprinted from Acta Amazônica, 23(2/3):181-185)

Xantonas Prendadas de Rheedia acuminata (GUTTIFERAE)

Maria das G. B. ZOGHBI 1  

Patrícia D. de D. B. LIMA1 

Maria do P. Socorro C. da CUNHA 1  

Angelo da C. PINTO 2  

1Instituto Nacional de Pesquisas da Amazônia, Coordenação de Pesquisas em Produtos Naturais, Caixa Postal 478, 69011-970 - Manaus. Amazonas, Brasil.

2Instituto de Química, Universidade Federal do Rio de Janeiro, Caixa Postal 1573, 20001-970, Rio de Janeiro, RJ, Brasil.

ABSTRACT

Pyranojacareubin; 1,5-dihydroxy-6',6'-dimethyl-2H-pyran(2,,3':6,7) -6",6"-dime-thyl-2H,4H-pyran(2",3":2,3)xanthone and a new xanthone l,6-dihydroxy-5-methoxy-6',6'-dime-thyl-2H-pyran(2',3':3,2)-7-(3,3-dimethylprop-2-enyl)xanthone were isolated from the ether extract of the root bark of Rheedia acuminata together with friedelin and friedelanol.

Key words: Guttiferae; Rheedia; Xanthones

RESUMO

Piranojacareubina; 1,5-diidroxi-6',6'-dimetil-2H-pirano(2',3':6,7)-6",6"-dimetil-2H,4H(2",3":2,3)xantona e uma xantona inédita 1,6-diidroxi-5-metoxi-6,6'-dimetil-2H-pirano(2',3':3,2)-7-(3,3-dimetilprop-2-enil) xantona foram isoladas do extrato etèreo da casca da raiz de Rheedia acuminata além de friedelina e friedelanol.

Palavras-Chave: Guttiferae; Rheedia; Xantonas

Full text available only in PDF format.

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