(2S)-6-(carbamoylamino)-2-(phenylmethoxycarbonylamino)hexanoic acid

2-O-benzyl 1-O-tert-butyl pyrazolidine-1,2-dicarboxylate

1-(苄氧基羰基)苯并噻唑

苄氧羰基-色氨酰-色氨酸

2-[phenacyl(phenylmethoxycarbonyl)amino]acetic acid