4-BOC-1-(6-甲基-2-吡啶基)哌嗪

4-(3-氨基-4-吡啶)-1-哌嗪羧酸叔丁酯

2-(4-Boc-哌嗪-1-基)甲基苯硼酸频那醇

1-Boc-4-(4-羟基苯基)-哌嗪

1-(4-吡啶基)哌嗪