tert-butyl 4-oxospiro[3H-pyrano[3,2-b]pyridine-2,4'-piperidine]-1'-carboxylate

8-chlorospiro[3H-chromene-2,4'-piperidine]-4-one,hydrochloride

tert-Butyl 4-(3,3-difluoroazetidin-1-yl)piperidine-1-carboxylate

3-氧代-3H-螺[异苯并呋喃-1,4-哌啶]-1-羧酸叔丁酯

2-Methyl-2-propanyl 4-(3-benzyl-3,8-diazabicyclo[3.2.1]oct-8-yl)- 1-piperidinecarboxylate