1-boc-4-氧代-3-氮杂烷羧酸乙酯

1-BOC-5-氧代氮杂环庚烷-甲酸乙酯

N-Boc-六氢-1H-氮杂卓-4-酮

N-乙氧羰基-4-哌啶酮

5-氧代氮杂烷-1,4-二羧酸二乙酯