8-苄基-2,8-二氮杂-螺[4,5]葵烷-1,3二酮

N-苄基哌啶酮

8-benzyl-2-(4-methoxybenzyl)-2,8-diazaspiro[4.5]decane

8-benzyl-3-oxa-8-azaspiro[4.5]decane-2,4-dione

2-(1-苄基-4-哌啶基)-2-氰基乙酸乙酯