4-氨基-4-甲基-2-戊醇

四甲基哌啶酮

7-azadispiro[5.1.5.3]hexadecan-15-one

2,2-dimethyl-1-azaspiro[5.5]undecan-4-one

2,2,6-trimethyl-6-isopropyl-4-oxopiperidine