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

methyl 3-[(2,2-dimethoxyethyl)amino]-2-methylpropanoate

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

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

methyl 3-{[3-(1H-imidazol-1-yl)propyl]amino}-2-methylpropanoate

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

methyl 2-methyl-3-(methylamino)propanoate

methyl 3-(octylamino)butanoate

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

ethyl 3-(azepan-1-yl)propanoate

ethyl 3-(2,6-dimethylpiperidin-1-yl)propanoate