1-(3-butyl-1,2,4-thiadiazol-5-yl)piperazine

3-{[(tert-butoxy)carbonyl][(pyridin-2-yl)methyl]amino}propanoic acid

3-{[(tert-butoxy)carbonyl][(oxolan-2-yl)methyl]amino}propanoic acid

3-{[(tert-butoxy)carbonyl](octyl)amino}propanoic acid

3-{[(tert-butoxy)carbonyl][(4-methoxyphenyl)methyl]amino}propanoic acid

3-{[(tert-butoxy)carbonyl][(4-chlorophenyl)methyl]amino}propanoic acid

tert-Butyl 3-(benzylamino)propanoate

tert-butyl 3-(cyclopropylamino)propanoate

tert-butyl 3-(hexylamino)propanoate

tert-butyl 3-[(2-methoxyethyl)amino]propanoate

tert-butyl 3-{[2-(2,4-dichlorophenyl)ethyl]amino}propanoate