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

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

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

tert-Butyl 3-(ethylamino)propanoate

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

tert-butyl 3-{[3-(1H-imidazol-1-yl)propyl]amino}propanoate

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

tert-butyl 3-{[2-(1H-indol-3-yl)ethyl]amino}propanoate

tert-butyl 3-(octylamino)propanoate

ethyl 3-[(butan-2-yl)amino]propanoate

ethyl 3-{[2-(morpholin-4-yl)ethyl]amino}propanoate