Identification of Cyanidin 3-O-(3″,6″-O-Dimalonyl-β-glucopyranoside) as a Flower Pigment of Chrysanthemum (Dendranthema grandiflorum)

It had been suggested that cyanidin 3-O-(6″-O-monomalonyl-β-glucopyranoside) and another unknown compound occur as major pigments in the purplish-red flower of chrysanthemum (Dendranthema grandiflorum). We determined the structure of the unknown compound as cyanidin 3-O-(3″,6″-O-dimalonyl-β-glucopyranoside) by FAB-MS and 1H-NMR. This is the first report of the identification of the cyanidin 3-dimalonyl glucoside as a flower pigment.