benzyl (S)-2-isocyano-4-methylpentanoate

benzyl ((3R)-3-(((benzyloxy)carbonyl)amino)-2-hydroxy-4-phenylbutanoyl)-L-leucinate

(R)-benzyl (1-(3,5-dimethyl-1H-pyrazol-1-yl)-1-oxo-3-phenylpropan-2-yl)carbamate

2-(3-tert-butoxycarbonylamino-2-hydroxy-4-phenylbutyrylamino)-4-methylpentanoic acid benzyl ester

(2S)-2-氨基-4-甲基戊酸甲酯