tert-butyl 3-[(diphenylmethyl)amino]propanoate

ethyl 3-[(2-ethoxyethyl)amino]propanoate

ethyl 3-(hexylamino)propanoate

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

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

ethyl 3-{[(4-methoxyphenyl)methyl]amino}propanoate

ethyl 3-(tert-butylamino)propanoate

tert-butyl 3-(tert-butylamino)propanoate

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

tert-butyl 2-methyl-3-[(1-phenylethyl)amino]propanoate

tert-butyl 2-methyl-3-{[(pyridin-3-yl)methyl]amino}propanoate

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

tert-butyl 2-methyl-3-{[(4-methylphenyl)methyl]amino}propanoate

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

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