9-methoxy-5-methyl-6H-pyrido[4,3-b]carbazole

N-甲基-4-哌啶酮

1,2,5,6-tetrahydro-N-methyl-4-(1-pyrrolidino)pyridine

1-苯酰基-4-哌啶酮

1-benzyl-4-pyrrolidino-Δ3-piperidine