4-benzyl-1-[(oxiran-2-yl)methyl]piperidine

3-[(butan-2-yl)[(tert-butoxy)carbonyl]amino]propanoic acid

3-{[(tert-butoxy)carbonyl][2-(dimethylamino)ethyl]amino}propanoic acid

3-{[(2H-1,3-benzodioxol-5-yl)methyl][(tert-butoxy)carbonyl]amino}propanoic acid

3-{[(tert-butoxy)carbonyl][5-(diethylamino)pentan-2-yl]amino}propanoic acid

3-{[(tert-butoxy)carbonyl](octyl)amino}propanoic acid

3-{[(tert-butoxy)carbonyl](diphenylmethyl)amino}propanoic acid

tert-butyl 3-{[2-(3,4-dimethoxyphenyl)ethyl]amino}propanoate

tert-butyl 3-(butylamino)propanoate

tert-butyl 3-(pentylamino)propanoate

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

tert-butyl 3-{[3-(1H-imidazol-1-yl)propyl]amino}propanoate

tert-butyl 3-(methylamino)propanoate

tert-butyl 3-[(2,2-diethoxyethyl)amino]propanoate

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