A new kaempferol triglycoside from Fagonia taeckholmiana:: cytotoxic activity of its extracts

In addition to apigenin, apigenin 7-O-glucoside, kaempferol 3-O-glucoside, kaempferol 3,7-di-O-rhamnoside, quercetin, and quercetin 3-O-glucoside, the methanolic extract of Fakonia taeckholmiana afforded a new compound identified as kaempferol 3-O-D-L-arabinopyranosyl-(1 -> 4)-O-beta-L-rhaninopyranoside-7-O-alpha-C-L-rhamnopyranoside. Identification of the isolated compounds was based on chemical and spectroscopic analyses including UV, FABMS, H-1, C-13 and 2D NMR, and DEPT. The cytotoxic activities of the compounds against several cancer cell lines were determined. (c) 2007 Elsevier Ltd. All rights reserved.