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.
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Nakayama et al. (1997) studied this question.