ethyl (S,E)-4-((tert-butoxycarbonyl)(3-methylbut-2-en-1-yl)amino)-5-((tert-butyldimethylsilyl)oxy)pent-2-enoate

1-溴-3-甲基-2-丁烯

(2S,3S,4S)-methyl 3-(2-(tert-butoxy)-2-oxoethyl)-2-cyano-4-(prop-1-en-2-yl)pyrrolidine-1-carboxylate

(2R,3S,4S)-methyl 3-(2-(tert-butoxy)-2-oxoethyl)-2-cyano-4-(prop-1-en-2-yl)pyrrolidine-1-carboxylate

(2S,3R)-1-benzoyl-3-tert-butoxycarbonylmethyl-4-oxopyrrolidine-2-carboxylic acid methyl ester