The metabolites formed in still cultures by Ceratocystis minor, one of the fungal species associated with the blue stain disease of pine, have been isolated and identified as ceratenolone (5), 6, 8-dihydroxy-3-methylisocoumarin (2), 8-hydroxy-6-methoxy-3- methylisocoumarin (8), 3, 4-dihydro-6, 8-dihydroxy-3-methylisocoumarin (10), 3, 4-dihydro-3- methyl-3, 6, 8-trihydroxy-3-methylisocoumarin (12), 3, 4-dihydro-3-methyl-3, 4, 6, 8- ...