4-戊烯酰氯

1-((3aS,6R,7aR)-8,8-dimethyl-2,2-dioxidohexahydro-1H-3a,6-methanobenzo[c]isothiazol-1-yl)pent-4-en-1-one

(2R,2'R)-N-(2'-(hydroxyamino)pent-4-enoyl)bornane-10,2-sultam

cyclohexyl 2-(((1R,4R)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ylidene)amino)pent-4-enoate

cyclohexyl 2-(((1S,2S,5S)-2-hydroxy-2,6,6-trimethylbicyclo[3.1.1]heptan-3-ylidene)amino)pent-4-enoate