1-叔丁氧羰基-4-氨甲基哌啶

2-噁唑-8-氮杂螺[4.5]癸烷

2-苄基-1-氧代-2,8-二氮杂螺[4.5]癸烷-8-羧酸叔丁酯

N-Boc-4-苄基哌啶-4-羧酸乙酯

N-Boc-4-(4-氯苄基)哌啶-4-羧酸乙酯