2-(trimethylsilyl)ethyl 1-oxo-2-azaspiro[5,5]undec-8-ene-2-carboxylate

2-氮己环酮

1-(三甲基硅烷基)-2-哌啶酮

3-allyl-3-(3-butenyl)tetrahydro-2(1H)-pyridinone

2-azaspiro[5,5]undec-8-en-1-one