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

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

methyl 3-{[2-(dimethylamino)ethyl]amino}-2-methylpropanoate

methyl 3-{[(2H-1,3-benzodioxol-5-yl)methyl]amino}-2-methylpropanoate