isoflavonoid isoflavonoid Any 1-benzopyran with an aryl substituent at position 3. The term was originally restricted to natural products, but is now also used to describe semi-synthetic and fully synthetic compounds. Wikipedia:Isoflavonoid chebi_ontology MetaCyc:Isoflavonoids 3-aryl-1-benzopyran 3-aryl-1-benzopyrans CHEBI:50753 isoflavonoids flavonoids flavonoids