1-{3-[(naphthalen-1-yl)methyl]-1,2,4-thiadiazol-5-yl}piperazine

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

3-{[(2H-1,3-benzodioxol-5-yl)methyl][(tert-butoxy)carbonyl]amino}propanoic acid

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

3-{[(tert-butoxy)carbonyl][2-(1H-indol-3-yl)ethyl]amino}propanoic acid

3-{[(tert-butoxy)carbonyl][3-(propan-2-yloxy)propyl]amino}propanoic acid

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

tert-butyl 3-{[(pyridin-4-yl)methyl]amino}propanoate

tert-butyl 3-{[(4-fluorophenyl)methyl]amino}propanoate

tert-butyl 3-{[(2-methoxyphenyl)methyl]amino}propanoate

ethyl 3-[(2-methylpropyl)amino]propanoate