3-氧代-3-(n-叔丁氧基羰基-氮杂啶-3-基)丙酸乙酯

5-(anilinomethylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione

2,2-Dimethyl-5-(3-phenyl-2-propen-1-ylidene)-1,3-dioxane-4,6-dion e

5-[(3,4-dimethoxyphenyl)methyl]-2,2-dimethyl-1,3-dioxane-4,6-dione

methyl 6-methyl-3-oxoheptanoate