N-[2-(ethoxycarbonyl)-1-methylprop-1-enyl]-L-valine tert-butyl ester

丁烯酮

ethyl (S)-2-acetyl-5-chloro-2-methyl-4-hexenoate

2-甲基乙酰乙酸乙酯

(2Z)-(+)-ethyl 2-methyl-3-[(S)-α-methylbenzylamino]-2-butenoate