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

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

3-((tert-butoxycarbonyl)(4-phenylbutan-2-yl)amino)propanoic acid

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

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

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

tert-butyl 3-[(1-phenylethyl)amino]propanoate

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

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

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

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

ethyl 3-(butylamino)propanoate

ethyl 3-[(1-phenylethyl)amino]propanoate

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

ethyl 3-{[5-(diethylamino)pentan-2-yl]amino}propanoate