1-[(tert-butoxy)carbonyl]-4-(propan-2-yl)piperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-(trifluoromethyl)piperidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-(trifluoromethyl)piperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-(trifluoromethyl)pyrrolidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)azepane-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)piperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-cyanopiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-cyclobutylpiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-cyclohexylpiperidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-cyclopentylpiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-cyclopentylpyrrolidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-cyclopropyl-3-fluoropyrrolidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-cyclopropylpiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-ethenylpiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-ethoxy-4-oxo-1,4lambda5-azaphosphinane-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-ethoxypiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-ethylpiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-ethynylpiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-fluoro-2,3-dihydro-1H-indole-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-fluoro-6-methyl-2,3-dihydro-1H-indole-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-fluoropiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-hydroxy-2,3-dihydro-1H-indole-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-hydroxy-2-methylpyrrolidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-hydroxy-3-methylpiperidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-hydroxyazepane-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-hydroxypiperidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-hydroxypiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-isocyanopiperidine

1-[(tert-butoxy)carbonyl]-4-methanesulfinylpiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methanesulfonylpiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methoxy-2,3-dihydro-1H-indole-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methoxy-2-methylpyrrolidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methoxy-7-methyl-2,3-dihydro-1H-indole-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methoxypiperidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methoxypiperidine-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methoxypyrrolidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methyl-1,4,5,6-tetrahydropyridine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methyl-1H,2H,3H-pyrrolo[2,3-b]pyridine-5-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methyl-2,3-dihydro-1H-indole-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methyl-2,5-dihydro-1H-pyrrole-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methyl-2,5-dihydro-1H-pyrrole-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methyl-3-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methyl-4-(pyridin-2-yl)pyrrolidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methyl-4-(trifluoromethyl)pyrrolidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-4-methyl-5-oxopiperazine-2-carboxylic acid