(4S,5S)-5-hydroxymethyl-4-phenylmethyloxazolidinone

((4S,5S)-4-benzyl-2-oxooxazolidin-5-yl)methyl 4-methylbenzenesulfonate

L-苯丙氨酸

L-苯丙氨醇

(3S)-boc-3-氨基-4-苯基-2-丁酮