2-(2-Benzyloxycarbonylamino-acetylamino)-3-oxo-butyric acid methyl ester

ethyl 2-<(S)-1-(N-t-butoxycarbonyl)aminoethyl>thiazole-4-carboxylate

(S)-ethyl 3-{2-[1-(tert-butoxycarbonyl)aminoethyl]-5-methyloxazol-4-yl}-3-oxopropanoate

Boc-L-丙氨酰胺

(S)-2-(1-(tert-butoxycarbonylamino)ethyl)-5-methyloxazole-4-carboxylic acid