Norditerpenoids from Flickingeria fimbriata and their inhibitory activities on nitric oxide and tumor necrosis factor-α production in mouse macrophages.
Molecules
; 19(5): 5863-75, 2014 May 06.
Article
em En
| MEDLINE
| ID: mdl-24806582
ABSTRACT
Bioassay-guided fractionation of the ethanolic extract of the leaves of Flickingeria flimbriata led to the isolation of two new degraded diterpenoids 1 and 2, a new ent-pimarane type diterpenoid 3, and four known steroids 4-7. The structures of 1-3 were elucidated by spectroscopic analysis, and their absolute configurations were determined by chemical methods, TDDFT quantum chemical calculations of ECD spectra, and CD exiton chirality method. Compounds 1 and 2, named flickinflimilins A and B, possess a rare 15,16-dinor-ent-pimarane skeleton. Compounds 1-7 were screened for the inhibitory activity against lipopolysaccharide (LPS)-induced NO and TNF-α production in RAW264.7 cells. Compounds 1-3 exhibited potent inhibitory activities, with IC50 values of less than 10 µM.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Fator de Necrose Tumoral alfa
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Diterpenos
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Inflamação
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Óxido Nítrico
Limite:
Animals
Idioma:
En
Revista:
Molecules
Assunto da revista:
BIOLOGIA
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
China