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

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

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

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

ethyl 3-{[2-(pyrrolidin-1-yl)ethyl]amino}propanoate

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

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

ethyl 3-[(4-phenylbutan-2-yl)amino]propanoate

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

ethyl 3-(cyclooctylamino)propanoate

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

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

tert-butyl 3-[(3-methoxypropyl)amino]-2-methylpropanoate

tert-butyl 3-{[5-(diethylamino)pentan-2-yl]amino}-2-methylpropanoate

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