N-Boc-2-哌啶甲酸

(S)-N-Boc-2-哌啶甲醇

4-(甲苯-4-磺酰氧)哌啶-1-羧酸叔丁酯

N-Boc-3,4-二氢-2H-吡啶

(S)-2-甲酰基-1-哌啶甲酸叔丁酯