4-(4-碘-1H-吡唑-1-基)-1-哌啶羧酸叔丁酯

4-(1H-吡唑)-哌啶

4-邻甲氧苯基哌啶

4-(2-氯苯氧基)哌啶-1-羧酸叔丁酯

3-氧代-3,6-二氢-2H-吡啶-1-羧酸叔丁酯