ethyl 8-fluoro-1,3,4,5-tetrahydropyrido[4,3-b]indole-2-carboxylate

4-二苯基亚甲基哌啶

4-苯基-4-羟基哌啶

3H-螺[2-苯并呋喃-1,4'-哌啶]

4-羟基哌啶