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

methyl 3-{[(4-fluorophenyl)methyl]amino}butanoate

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

methyl 3-{[3-(dimethylamino)propyl]amino}butanoate

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

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

methyl 3-{[(4-chlorophenyl)methyl]amino}butanoate

methyl 3-(tert-butylamino)-2-methylpropanoate

methyl 3-(cyclooctylamino)-2-methylpropanoate

ethyl 3-[bis(2-methylpropyl)amino]propanoate

3-(dipropylamino)propanoic acid