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

(4S,5R)-4-methoxycarbonylmethyl-5-phenyloxazolidin-2-one

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

苯基锂