4-(氨基甲基)-4-羟基哌啶-1-甲酸叔丁酯

4-(羟基甲基)-4-甲氧基哌啶-1-羧酸叔丁酯

4-formyl-4-methoxypiperidine-1-carboxylic acid 1,1-dimethylethyl ester

1-叔丁氧羰基-4-氟-4-(羟甲基)哌啶

4-(氨甲基)-4-氟哌啶-1-羧酸叔丁酯