N'-(2-benzyloxycarbonylamino-3-thiazol-4-yl-propionyl)-hydrazinecarboxylic acid tert-butyl ester
N-(2-benzyloxycarbonylamino-3-thiazol-4-yl-propionyl)-glycine
2-benzyloxycarbonylamino-3-thiazol-4-yl-propionic acid 4-nitro-phenyl ester
(S)-3-(4-thiazolyl)-2-tert-butoxycarbonylaminopropanoic acid
2-Amino-3-(4-thiazolyl)-propanoic acid