aurones

https://doi.org/10.1351/goldbook.09975

Aurones are compounds derived from (2$Z$)-2-benzylidene-1-benzofuran-3(2$H$)-one [alternative name: (2$Z$)-2-(phenylmethylidene)-1-benzofuran-3(2$H$)-one] (aurone, compound 14).

Source:
PAC, 2018, 90, 1429. (Nomenclature of flavonoids (IUPAC Recommendations 2017)) on page 1434 [Terms] [Paper]