8-(4-methoxyphenyl)-1,4-dioxa-8-azaspiro[4.5]decane

8-甲基-2,3,4,5-四氢-1H-吡啶并[4,3-b]吲哚

1-[4-(4-fluorophenyl)-4-oxobutyl]piperidin-4-one

4,4-二(4-氯苯基)哌啶

1-[2-(4-甲氧基苯基)乙基]-4-哌啶酮