1-(4-nitrophenyl)piperidin-4-one

4-(4-(三氟甲氧基)苯氧基)哌啶-1-羧酸叔丁酯

4-(4-溴吡唑-1-基)哌啶-1-甲酸叔丁酯

4-(4-羟基哌啶-1-基)苯(甲)醛

4-羟基-1-(4-硝基苯基)哌啶