苯-2-丁烯酸乙酯

(4S,5S)-2,2-dimethyl-3-(tert-butoxycarbonyl)-4-benzyl-5-formyl-1,3-oxazolidine

(3S,2R)-3-amino-2-hydroxy-4-phenylbutyric acid methyl ester

(2R,3S)-N-(tert-butoxycarbonyl)-3-amino-2-hydroxy-4-phenylbutanoic acid methyl ester

(4S,5R)-4-Benzyl-2,2-dimethyl-oxazolidine-3,5-dicarboxylic acid 3-tert-butyl ester 5-methyl ester