(+)-(2S,3R)-methyl 3-(tert-butoxycarbonylamino)-2-hydroxy-3-phenylpropanoate

Benzoic acid (1S,2R)-2-amino-1-methoxycarbonyl-2-phenyl-ethyl ester

methyl (2S,3R)-3-(N-tert-butoxycarbonylamino)-2-benzoyloxy-3-phenylpropionate

methyl (3R,αR)-3--2-oxo-3-phenylpropionate

methyl (2R,3R,αR)-3--2-hydroxy-3-phenylpropionate