methyl 2-oxo-2-(4-oxo-2,3-dihydro-1H-phenanthren-3-yl)acetate

1-苄基-2,3-哌嗪二酮

(2Z)-2-羟基-4-氧代-4-苯基-2-丁烯酸甲酯

3-氰基-2-氧代-3-苯基-丙酸甲酯

4-(4-氟苯基)-2,4-二氧代丁酸甲酯