1.
Chem Pharm Bull (Tokyo)
; 55(11): 1635-9, 2007 Nov.
Artículo
en Inglés
| MEDLINE
| ID: mdl-17978526
RESUMEN
A new acylated flavonoid, 6,4'-dimethoxyquercetin-3-O-beta-D-6''[3,4,5-trihydroxy (E)-cinnamoyl]glucopyranoside, and a naphthopyranone dimer, named eriocauline, together with 2 other known flavonoids, 6-methoxyapigenin-7-O-beta-D-glucopyranoside and 6-methoxyapigenin-7-O-beta-D-allopyranoside, have been isolated from the capitulae of Eriocaulon ligulatum. The compounds were identified using spectroscopic methods (HR-ESI-MS, and 1-D and 2-D NMR). The methanol extract exhibited mutagenic activity in the Salmonella/microsome assay, in strains TA100, TA97a and TA102 and for dichloromethane extract tested in strain TA98.