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 Fagonia taeckholmiana afforded a new compound identified as kaempferol 3-O-β-l-arabinopyranosyl-(1→4)-α-l-rhamnopyranoside-7-O-α-l-rhamnopyranoside. Identification of the isolated compounds was based on chemical and spectroscopic analyses including UV, FABMS, 1H, 13C and 2D NMR, and DEPT. The cytotoxic activities of the compounds against several cancer cell lines were determined.

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