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

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

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

ethyl 3-[(3-methoxypropyl)amino]propanoate

ethyl 3-[(prop-2-en-1-yl)amino]propanoate

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

ethyl 3-(cycloheptylamino)propanoate

tert-butyl 3-(cyclooctylamino)propanoate

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

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

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