Spiro[3H-indole-3,4′-piperidine]-1′-carboxylic acid, 1,2-dihydro-, phenylmethyl ester
Phenylmethyl 1,2-dihydrospiro[3H-indole-3,4′-piperidine]-1′-carboxylate
1′-(Benzyloxycarbonyl)spiro(indoline-3,4′-piperidine)
1,2-Dihydrospiro[3H-indole-3,4′-piperidine]-1′-carboxylic acid phenylmethyl ester
Benzyl spiro[indoline-3,4′-piperidine]-1′-carboxylate