2-(4-哌啶基)烟腈

4-甲氧基羰基亚甲基-哌啶-1-羧酸苄酯

benzyl 4-(2-oxoindolin-1-yl)piperidine-1-carboxylate

benzyl 3-(benzylcarbamoyl)-3-phenylpyrrolidine-1-carboxylate