1-(4-甲氧基苯基)-哌啶-2-酮

tert-butyl N-[5-(4-chlorophenyl)-5-oxopentyl]carbamate

5-(methylamino)pentanoic acid

4-(2-氧代-1-哌啶)-苯甲腈

1-叔丁氧羰基-2-甲氧基-哌啶