The flavanones, a type of flavonoids, are various aromatic, colorless ketones derived from flavone that often occur in plants as glycosides.
The enzyme chalcone isomerase uses a chalcone-like compound to produce a flavanone.
Flavanone 4-reductase is an enzyme that uses (2S)-flavan-4-ol and NADP<sup>+</sup> to produce (2S)-flavanone, NADPH, and H<sup>+</sup>.
Numerous methods exist for the enantioselective chemical and biochemical synthesis of flavanones and related compounds.