Term Name:	topopyrone C
Synonyms:	5,9,11-trihydroxy-2-methyl-4H-naphtho[2,3-h]chromene-4,7,12-trione
Definition:	A naphthochromene that is 4H-naphtho[2,3-h]chromene-4,7,12-trione substituted by hydroxy groups at positions 5, 9 and 11 and a methyl group at position 2. It is isolated from fungal strains Phoma and Penicillium and acts as an inhibitor of the enzyme topoisomerase I.
Ontology:	ChEBI [CHEBI:66254]  ( EBI )