a (2R,3R)-dihydroflavonol + succinate + CO2 => a (2S)-flavan-4-one + 2-oxoglutarate + O2
a (2r,3r)-dihydroflavonol + succinate + co2 => a (2s)-flavan-4-one + 2-oxoglutarate + o2
a (2R,3R)-dihydroflavonol + succinate + CO2 => a (2S)-flavan-4-one + 2-oxoglutarate + O2
a (2r,3r)-dihydroflavonol + succinate + co2 => a (2s)-flavan-4-one + 2-oxoglutarate + o2