| ethyl 1-(tert-butoxycarbonyl)-3-piperidinecarboxylate |
| ethyl 1-boc-3-piperidinecarboxylate |
| ethyl 1-(tert-butoxycarbonyl)nipecotate |
| ethyl 1-boc-nipecotate |
| 1-(tert-butoxycarbonyl)-3-piperidinecarboxylic acid ethyl ester |
| 1-boc-3-piperidinecarboxylic acid ethyl ester |
| 1-(tert-butoxycarbonyl)nipecotic acid ethyl ester |
| 1-boc-nipecotic acid ethyl ester |