tert-butyl 2-methyl-3-{[2-(pyrrolidin-1-yl)ethyl]amino}propanoate

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

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

methyl 3-[(2-methoxyethyl)amino]-2-methylpropanoate

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

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

methyl 3-[(3-ethoxypropyl)amino]-2-methylpropanoate

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

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

methyl 2-methyl-3-{[3-(propan-2-yloxy)propyl]amino}propanoate

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