flavone Chem.
(ˈfleɪ-, ˈflævəʊn)
[ad. G. flavon (von Kostanecki & Tambor 1895, in Ber. d. Deut. Chem. Ges. XXVIII. 2302), f. flavo- + -one.]
a. A colourless crystalline tricyclic compound, C15H10O2; 2-phenylbenzo-1, 4-pyrone. b. Any of the derivatives of this compound, many of which are plant pigments; a flavonoid.
| 1897 Jrnl. Chem. Soc. LXXII. i. 425 Flavone, C15H10O2, is formed by the condensation of ketocumaran with benzaldehyde, and separates in almost colourless crystals melting at 108°. 1938 G. H. Richter Textbk. Org. Chem. 664 The powder on the flower stalks, leaves, and seed capsules of many varieties of the primula is chiefly flavone. 1965 Bell & Coombe tr. Strasburger's Textbk. Bot. (new ed.) 21 In many genera in which there are blue- or red-flowered species containing anthocyanins, other species have yellow flowers containing flavones. |