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

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

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

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

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

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

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

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

tert-butyl 3-{[(4-chlorophenyl)methyl]amino}-2-methylpropanoate

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

methyl 3-{[(furan-2-yl)methyl]amino}butanoate