3-苯基-6,7-二氢-1H-吡唑并[4,3-c]吡啶-5(4H)-羧酸叔丁酯

5-甲氧基-3-(1,2,3,6-四氢-4-吡啶)-1H-吲哚

1-(2,2,2-三氟乙基)-4-哌啶酮

4-(2-乙氧基-2-氧代亚乙基)哌啶-1-羧酸苄酯

1-(2-Propyn-1-yl)-4-piperidinone