[L-(trans)]-4-[(t-butoxycarbonyl)amino]-5-phenyl-2-pentenoic acid

(R)-2-氧代-5-苄基-1-吡咯烷羧酸叔丁酯

ethyl (R)-4-(tert-butoxycarbonylamino)-5-phenylpentanoate

Boc-4-amino-3-hydroxy-5-phenylpentanoic acid ethyl ester

N-叔丁氧羰基-L-苯丙氨酸甲酯