benzyl 4-(2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-1-yl)piperidine-1-carboxylate

4-(2-氧代-2,3-二氢-1H-咪唑并[4,5-b]吡啶-1-基)哌啶-1-羧酸叔丁酯

3-氨基-2-氯吡啶

1-Cbz-4-哌啶酮

benzyl 4-(2-chloro-pyridin-3-yl-amino)-piperidine-1-carboxylate