4-(甲基硫代)哌啶-1-羧酸叔丁酯

4-羟基-4-(2-甲氧基苯基)哌啶-1-羧酸叔丁酯

4-(4-甲酰基苯氧基)哌啶-1-羧酸叔丁酯

N-BOC 4-(4-溴苯基硫代)哌啶

4-(2-氟-4-硝基苯氧基)哌啶-1-羧酸叔丁酯