I3-naringenin-II8--4'OMe-eriodictyol: a new potential analgesic agent isolated from Rheedia gardneriana leaves.
Z Naturforsch C J Biosci
; 55(9-10): 820-3, 2000.
Article
em En
| MEDLINE
| ID: mdl-11098837
ABSTRACT
This paper describes the isolation, identification and analgesic activity of a new biflavonoid from Rheedia gardneriana leaves, which correspond to I3-naringenin-II8-4'-OMe-eriodictyol (GB-2a-II-4'-OMe) (1), with a methoxyl group in position 4 of ring-II. Its structure was determined by spectroscopic data and confirmed by an alkaline hydrolysis. Its analgesic effect was evaluated in a writhing test and a formalin test in mice. It was found that this compound exhibits potent and dose-related analgesic action in both experimental models, with ID50's values of 4.5 micromol/kg against the writhing test and 8.2 and 6.8 micromol/kg against the first and second phase of the formalin test, respectively. It was several times more potent than some well-known analgesic drugs used as reference.
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Base de dados:
MEDLINE
Assunto principal:
Dor
/
Plantas Medicinais
/
Flavonoides
/
Biflavonoides
/
Analgésicos
Limite:
Animals
Idioma:
En
Revista:
Z Naturforsch C J Biosci
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Brasil