ethyl 3-(cyclooctylamino)propanoate

tert-butyl 3-(cyclohexylamino)-2-methylpropanoate

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

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

tert-butyl 3-{[5-(diethylamino)pentan-2-yl]amino}-2-methylpropanoate

tert-butyl 3-(cyclopentylamino)-2-methylpropanoate

tert-butyl 3-(tert-butylamino)-2-methylpropanoate

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

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

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

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

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

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

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

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