| tert-butyl 4-(n-methoxy-n-methylcarbamoyl)-1-piperidinecarboxylate |
| 4-(n-methoxy-n-methylcarbamoyl)-1-piperidinecarboxylic acid tert-butyl ester |
| 1-(tert-butoxycarbonyl)-n-methoxy-n-methyl-4-piperidinecarboxamide |
| 1-boc-n-methoxy-n-methyl-4-piperidinecarboxamide |
| 1-(tert-butoxycarbonyl)-4-(n-methoxy-n-methylcarbamoyl)piperidine |
| 1-boc-4-(n-methoxy-n-methylcarbamoyl)piperidine |