3-(苄氧羰基氨基)-1-丙醇

N-苄氧羰基-3-氨基丙醛

benzyl N-(4-bromo-3-oxobutyl)carbamate

N-(3-氨基-3-氧代丙基)氨基甲酸苯甲酯

benzyl (2R,3R)-5-(N-benzyloxycarbonyl)-amino-3-hydroxy-2-(2-'oxoazetidin-1'-yl)pentanoate