tert-Butyl 7-fluoro-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
tert-Butyl 4-chloro-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
tert-Butyl 5-amino-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate
tert-Butyl 5-nitro-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
tert-Butyl 5-bromo-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
6-Oxospiro[3.3]heptane-2-carboxylic acid
tert-Butyl 6-fluoro-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
tert-Butyl 5-fluoro-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
tert-Butyl 5-methoxy-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
tert-Butyl 6-hydroxy-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
tert-Butyl 6-methoxy-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
tert-Butyl 2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate
tert-Butyl 4-oxospiro[chroman-2,4'-piperidine]-1'-carboxylate
tert-Butyl 6-bromo-4-oxospiro[chroman-2,4'-piperidine]-1'-carboxylate
tert-Butyl 5-chloro-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
tert-Butyl 5-bromo-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate
tert-Butyl 6-amino-2-oxospiro[indoline-3,3'-pyrrolidine]-1'-carboxylate
tert-Butyl 4-bromo-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
Methyl 6-oxospiro[3.3]heptane-2-carboxylate
tert-Butyl 4-fluoro-2-oxospiro[indoline-3,4'-piperidine]-1'-carboxylate
