1-氧代-2,8-二氮杂螺[4.5]癸烷-8-羧酸叔丁酯

4-哌啶甲酸乙酯

1-tert-butyl 4-ethyl 4-(2-chloroethyl)piperidine-1,4-dicarboxylate

N-Boc-4-哌啶甲酸乙酯

1-(tert-butyl) 4-ethyl 4-(2-azidoethyl)piperidine-1,4-dicarboxylate