3-hydroxy-3,5,6,7-tetrahydro-2H-1-benzofuran-4-one

1-[(4-甲基苯基)磺酰基]-1,5,6,7-四氢-4H-吲哚-4-酮

9-methyl-2,3,4,5,6,7,9,10-octahydroacridine-1,8-dione

2-methyl-2-prop-2-enylcyclohexane-1,3-dione

2-propan-2-ylcyclohexane-1,3-dione