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

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

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

tert-butyl 3-{[3-(diethylamino)propyl]amino}propanoate

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

ethyl 3-[(2,2-dimethoxyethyl)amino]propanoate

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

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

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

tert-butyl 3-{[(furan-2-yl)methyl]amino}-2-methylpropanoate

tert-butyl 3-[(butan-2-yl)amino]-2-methylpropanoate

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

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

tert-butyl 2-methyl-3-[(4-phenylbutan-2-yl)amino]propanoate

tert-butyl 3-[(2,2-diethoxyethyl)amino]-2-methylpropanoate