5-溴-2-(4-boc-哌嗪-1-基)嘧啶

1-(2-氯苯基)哌嗪

4-(6-氯哒嗪-3-基)哌嗪-1-羧酸叔丁酯

4-(4-硝基苯甲酰)四氢-1(2H)-吡嗪羧酸叔丁酯

4-(2-溴苯基)哌嗪-1-羧酸叔丁酯