(2R,3S)-3-benzyl-N-(2,4,6-trimethylbenzensulfonyl)-2-vinylaziridine

(3R,4S)-4-(tert-Butoxycarbonyl-methyl-amino)-3-(tert-butyl-dimethyl-silanyloxy)-5-phenyl-pentanoic acid

(2S,3R)-3-[(3R,4S)-4-(tert-Butoxycarbonyl-methyl-amino)-3-(tert-butyl-dimethyl-silanyloxy)-5-phenyl-pentanoyloxy]-2-methyl-decanoic acid benzyl ester

[(1S,2R)-1-Benzyl-2-(tert-butyl-dimethyl-silanyloxy)-but-3-enyl]-methyl-carbamic acid tert-butyl ester