A new lipophilic flavonol, 6-hydroxykaempferol 3, 7, 4′-trimethyl ether, called tanetin, has been characterized in the leaf, flower and seed of feverfew, Tanacetum parthenium. It co- occurs with the known 6-hydroxykaempferol 3, 7-dimethyl ether, quercetagetin 3, 7-dimethyl ether and quercetagetin 3, 7, 3′-trimethyl ether. Pharmacological tests indicate that tanetin could contribute to the anti-inflammatory properties of feverfew by inhibiting the generation ...
