(3R,4S)-3-hydroxy-4-phenyl-1-[(1S)-1-phenylethyl]azetidin-2-one

2-(叔丁氧羰基氧亚氨基)-2-苯乙腈

(2R,3S)-3-Amino-2-benzyloxy-3-phenyl-thiopropionic acid S-tert-butyl ester

S-(tert-butyl) (2R,3S)-3-azido-2-(benzyloxy)-3-phenylpropanethioate

methyl (2R,3R)-2-benzyloxy-3-hydroxy-3-phenylpropanoate