isoflavans

https://doi.org/10.1351/goldbook.09970

Isoflavans are compounds with a 3-phenyl-3,4-dihydro-2\(H\)-1-benzopyran skeleton (see isoflavonoids). They may be substituted.

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