Term Name:	hemiustilaginoidin D
Synonyms:	(2R,3R)-2,3-dihydro-5,6,8-trihydroxy-2,3-dimethyl-4H-naphtho[2,3-b]pyran-4-one, (2R,3R)-5,6,8-trihydroxy-2,3-dimethyl-2,3-dihydro-4H-benzo[g]chromen-4-one, (2R,3R)-5,6,8-trihydroxy-2,3-dimethyl-2,3-dihydro-4H-naphtho[2,3-b]pyran-4-one
Definition:	A naphtho-gamma-pyrone which carries hydroxy substituents at positions C-5, C-6 and C-8 and methyl groups at C-2 and C-3. Obtained from the laccase gene deletion mutant of Villosiclava virens (anamorph: Ustilaginoidea Virens), it is a precursor of ustilaginoidins used as the raw material for hapten synthesis through diazotization and Mannich reactions followed by bioconjugation with carrier proteins for complete antigen synthesis.
Ontology:	ChEBI [CHEBI:194134]  ( EBI )