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

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

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

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

tert-butyl 3-{[3-(dimethylamino)-2,2-dimethylpropyl]amino}-2-methylpropanoate

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

methyl 2-methyl-3-[(2-phenylethyl)amino]propanoate

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

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

methyl 3-(pentylamino)butanoate

methyl 3-[(3-methoxypropyl)amino]butanoate