Flavanone glycosides from viscum coloratum and their inhibitory effects on osteoclast formation.
Chem Biodivers
; 8(9): 1682-8, 2011 Sep.
Article
en En
| MEDLINE
| ID: mdl-21922656
ABSTRACT
Two novel flavanone glycosides, homoeriodictyol 7-O-ß-D-[6-(3-hydroxybutanoyl)glucopyranoside] (viscumneoside IX; 1) and homoeriodictyol 7-O-ß-D-[6-(3-hydroxybutanoyl)glucopyranosyl](1â2)-ß-D-glucopyranoside (viscumneoside X; 2), together with four known flavanoids, 2-homoeriodictyol 7-O-ß-D-glucopyranoside (3), viscumneoside I (4), viscumneoside III (5), and 4',5-dihydroxy-3'-methoxy-7-(2-O-α-L-rhamnopyranosyl-ß-D-glucopyranosyloxy)flavanone (6) were isolated from stems and leaves of Viscum coloratum. Their structures were elucidated on the basis of their NMR spectra, HR-FAB-MS data, and acid hydrolysis. Inhibitory effects of the four compounds 1-4 on the formation of osteoclast-like multinucleated cells were investigated. As a result, all the four flavanoids showed significant inhibitory effects on the formation of osteoclast-like multinuclear cells even at a low concentration of 2â
µg/ml. The activities of 1-4 at such a concentration exceeded or approximated to that of elcitonin, the positive control drug at a concentration of 2â
U/ml, suggesting that they may be of interest for the development of new anti-osteoporosis drugs.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Osteoclastos
/
Flavonoides
/
Viscum
/
Glucósidos
Límite:
Animals
Idioma:
En
Revista:
Chem Biodivers
Asunto de la revista:
BIOQUIMICA
/
QUIMICA
Año:
2011
Tipo del documento:
Article