(2R,3S)-3-phenyloxiranecarboxylic acid

(2R,3s)-3-氨基-2-羟基-3-苯基丙酸乙酯

N-(t-叔丁氧羰基)-3-苯基异丝氨酸乙酯

(4S,5R)-3-(tert-butoxycarbonyl)-2,2-dimethyl-4-phenyloxazolidine-5-carboxylic acid