flavonas
Flavonas, commonly known as flavones, are a class of flavonoids, a large group of polyphenolic compounds produced by plants. They share a characteristic chemical core: a 2-phenyl-1-benzopyran-4-one skeleton, consisting of two benzene rings (A and B) fused to a heterocyclic C ring. Variation in hydroxyl and methoxy substitutions gives numerous flavone compounds. Notable examples include apigenin, luteolin, chrysin, and diosmetin.
Natural occurrence and sources are broad; flavones are found in many fruits, vegetables, herbs, and beverages.
Biosynthesis of flavones proceeds via the plant flavonoid pathway. Phenylalanine-derived precursors are converted through a series
Biological activities studied for flavones include antioxidant and anti-inflammatory effects, modulation of enzymes and signaling pathways,