flavone
IPA: fɫˈeɪvʌn
noun
- (organic chemistry) Any of a class of tricyclic aromatic heterocyclic ketones, especially the naturally occurring flavonoids.
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Examples of "flavone" in Sentences
- V. (1963) A new flavone from Artemisia herba-alba.
- JAIN, R.K. and SHARMA, G.C. (1980) ProsogerinD, a new flavone from Prosopis spicigera seeds.
- BATYUK, V.S. and KOLTSOVA, L.F. (1968) Isoquercitrin, a new flavone glycoside of Solidago canadensis.
- The usual dose is 60 mg twice a day, and it should be standardized to 24 percent flavone glycosides or ginkgolides.
- Active ingredients include flavone glycosides (including ginkgolide), bioflavins, sitosterol, lactones and anthocyanin.
- Polyphenols identified in the cocoa bean include several different catechins, as well as procyanins, anthocyanins, and flavone and flavonol glycosides.
- The presence of a double bond at position C-2-3 in the flavone and flavonol aglycones, a keto group at C-4, B ring hydroxylation and/or a free hydroxyl group at C-3 may be associated with activity.
- Among the 22 flavone derivatives tested, only wogonin was strongly mutagenic, while five derivatives, apigenin triacetate, acacetin, chrysoeriol, pedalitin, and pedalitin tetraacetate, were only weakly mutagenic.
- The flavonoids, apigenin, flavone, flavanone, hesperidin, naringin, and tangeretin promoted the ascorbic acid-induced lipid peroxidation, the extent of which depended upon the concentration of the flavonoid and ascorbic acid.
- Willstätter has elucidated the chemical structure of these cyanidins; he has proved in what their difference consists in the various flowers or fruits, and has also proved their close relationship with the yellow pigments, occurring in Nature, of the flavone or flavonol group.
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