Any naphthopyran whose skeleton consists of a naphathalene ring system ortho-fused to a gamma-pyrone.
| Member | Definition | Role |
|---|
| adefovir | A dimeric naphthopyran with formula C32H26O10, originally isolated from Aspergillus niger. | aurasperone A |
| alpha-naphthoflavone | An extended flavonoid resulting from the formal fusion of a benzene ring with the h side of flavone. A synthetic compound, it is an inhibitor of aromatase (EC 1.14.14.14). | alpha-naphthoflavone |
| beta-naphthoflavone | An extended flavonoid resulting from the formal fusion of a benzene ring with the f side of flavone. | beta-naphthoflavone |
| flavasperone | A naphtho-gamma-pyrone that is 4H-naphtho[1,2-b]pyran-4-one carrying a methyl substituent at position2, a hydroxy substituent at position 5 and two methoxy substotuents at positions 8 and 10. Originally isolated from Aspergillus niger. | flavasperone |
| fonsecin | A naphtho-gamma-pyrone that is 2,3-dihydro-4H-benzo[g]chromen-4-one bearing a methyl substituent at position 2, a methoxy substituent at position 6 and three hydroxy substituents at positions 2, 5 and 8. | fonsecin |
| fonsecinone a | A dimeric naphthopyran with formula C32H26O10, originally isolated from Aspergillus niger. | fonsecinone A |
| rubrofusarin B | A benzochromenone that is rubrofusarin in which the hydroxy group at position 6 has been converted to the corresponding methyl ether. | rubrofusarin B |