1-[(tert-butoxy)carbonyl]-5-hydroxypiperidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-5-hydroxypiperidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-5-methoxypiperidine-3-carboxylic acid

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

1-[(tert-butoxy)carbonyl]-5-methylazocane-5-carboxylic acid

1-[(tert-butoxy)carbonyl]-5-methylpiperidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-5-methylpiperidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-5-methylpiperidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-5-methylpyrrolidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-5-methylpyrrolidine-3-carboxylic acid

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

1-[(tert-butoxy)carbonyl]-5-oxopiperidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-5-tert-butylpiperidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-5-tert-butylpiperidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-6,6-difluoroazepane-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-6,6-dimethylpiperidine-3-carboxylic acid

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

1-[(tert-butoxy)carbonyl]-6-cyclobutylpiperidine-3-carboxylic acid

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

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

1-[(tert-butoxy)carbonyl]-6-methoxy-1,2,3,4-tetrahydroquinoline-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-6-methoxy-1H,2H,3H-pyrrolo[2,3-b]pyridine-2-carboxylic acid

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

1-[(tert-butoxy)carbonyl]-6-methyl-1-azaspiro[3.3]heptane-6-carboxylic acid

1-[(tert-butoxy)carbonyl]-6-methylpiperidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-7,7-difluoro-1-azaspiro[3.5]nonane-2-carboxylic acid

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

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

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

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

1-[(tert-butoxy)carbonyl]-7-oxa-1-azaspiro[3.5]nonane-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-7-oxa-1-azaspiro[3.5]nonane-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-8,8-difluoro-1-azaspiro[4.5]decane-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-8,8-dioxo-8lambda6-thia-1-azaspiro[4.5]decane-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-8-oxa-1-azaspiro[4.5]decane-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-8-oxa-1-azaspiro[4.5]decane-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-8-oxa-1-azaspiro[4.5]decane-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-8-thia-1-azaspiro[4.5]decane-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-9-oxa-1-azaspiro[5.5]undecane-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-9-oxa-1-azaspiro[5.5]undecane-4-carboxylic acid

1-[(tert-butoxy)carbonyl]-decahydrocyclohepta[b]pyrrole-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-decahydrocyclohepta[b]pyrrole-3a-carboxylic acid

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

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

1-[(tert-butoxy)carbonyl]-decahydroquinoline-6-carboxylic acid