neoflavones

synonym: 4-phenylcoumarins
https://doi.org/10.1351/goldbook.09974

Neoflavones are compounds with a 4-phenyl-2$H$-1-benzopyran-2-one (4-phenyl-2$H$-chromen-2-one) skeleton 11. They may be substituted.

Source:
PAC, 2018, 90, 1429. (Nomenclature of flavonoids (IUPAC Recommendations 2017)) on page 1433 [Terms] [Paper]