Melanogenesis inhibitory and free radical scavenging activities of diarylheptanoids and other phenolic compounds from the bark of Acer nikoense.
Biol Pharm Bull
; 29(9): 1970-2, 2006 Sep.
Article
em En
| MEDLINE
| ID: mdl-16946520
ABSTRACT
Melanogenesis inhibitory and free radical scavenging activities of nine cyclic (1-9) and one acyclic diarylheptanoids (10), and two phenolic compounds, (+)-rhododendrol (11) and (+)-catechin (12), isolated from the ethyl acetate-soluble fraction of the MeOH extract of the bark of Acer nikoense MAXIM. (Aceraceae) were examined. Upon evaluation of compounds 1-12 on the melanogenesis in the B16 melanoma cells, two compounds, 2 and 8, exhibited marked inhibitory activity with 55.6% and 46.8% reduction, respectively, of melanin content at 25 microg/ml without inhibition of cell proliferation. In addition, upon an evaluation of eleven compounds, 1-7 and 9-12 against the scavenging activities of free radicals (against the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical), compound 12 (IC(50) 9.0 microgM) followed by compounds 1, 3, 4, and 6 (IC(50) 40.2-44.0 microgM) showed potent scavenging activities.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fenóis
/
Extratos Vegetais
/
Sequestradores de Radicais Livres
/
Casca de Planta
/
Acer
/
Diarileptanoides
/
Melaninas
Limite:
Animals
Idioma:
En
Revista:
Biol Pharm Bull
Assunto da revista:
BIOQUIMICA
/
FARMACOLOGIA
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Japão