4-(3-乙氧基-3-氧代丙基)哌啶-1-羧酸叔丁酯

1-Boc-4-乙炔基哌啶

3-哌啶-4-丙酸乙酯

2,9-二氮杂螺[5.5]十一烷-2-甲酸叔丁酯

tert-butyl 4-(morpholin-4-ylmethyl)piperidine-1-carboxylate