methyl (4S,5R)-2-benzyloxy-5-phenyloxazoline-4-acetate

(R)-methyl 2-((4S,5R)-2-(benzyloxy)-5-phenyl-4,5-dihydrooxazol-4-yl)-2-hydroxyacetate

methyl (2S,3R)-3-(benzyloxycarbonyl)amino-2-formyloxy-4-phenylbutanoate

Boc-D-苯丙氨酸

[1-benzyl-3-cyano-2-oxo-3-(triphenyl-λ5-phosphanylidene)-propyl]-carbamic acid tert-butyl ester