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

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

ethyl 3-(butylamino)propanoate

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

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

ethyl 3-(pentylamino)propanoate

ethyl 3-[(3-ethoxypropyl)amino]propanoate

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

ethyl 3-(octylamino)propanoate

tert-butyl 2-methyl-3-[(pentan-2-yl)amino]propanoate

tert-butyl 3-(cyclohexylamino)-2-methylpropanoate