4-氨基甲基-1-叔丁氧羰基哌啶-4-甲酸甲酯

N-Boc-4-氰基哌啶

1-(2-hydroxyethyl)piperidine-4-carbonitrile

3-苄氨基丙酸甲酯

1-苄基-4-氰基哌啶