1-苯磺酰基-4-哌啶羧酸

4-哌啶甲酸乙酯

4-哌啶甲酸叔丁酯

N-Boc-4-哌啶甲醇

(2,4-二氟苯基)-4-哌啶基甲酮肟盐酸盐