methyl (S)-2-amino-3-tert-butoxycarbonylaminopropanoate
methyl N-(benzyloxycarbonyl)glycyl-L-phenylalanyl-D-prolyl-Nβ-(tert-butoxycarbonyl)-L-α,β-diaminopropanoate
(S)-2-amino-3-((tert-butoxycarbonyl)amino)propanoic acid
Nα-Tosyl-Nβ-(tert-butpxycarbonyl)-L-α,β-diamonopropionic acid
methyl (2S)-2-{[(benzyloxy)carbonyl]amino}-3-[(tert-butoxycarbonyl)amino]propanoate
cyclo(glycyl-L-phenylalanyl-D-prolyl-Nβ-(tert-butoxycarbonyl)-L-α,β-diaminopropanoyl)
cyclo(glycyl-L-phenylalanyl-D-prolyl-Nβ-(N-maleoylglycyl)-L-α,β-diaminopropanoyl)
(S)-2-({(R)-1-[(S)-2-(2-Amino-acetylamino)-3-phenyl-propionyl]-pyrrolidine-2-carbonyl}-amino)-3-tert-butoxycarbonylamino-propionic acid 2,4,5-trichloro-phenyl ester