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

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

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

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

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

1-[(tert-butoxy)carbonyl]-3-isocyanoazetidine

1-[(tert-butoxy)carbonyl]-3-isocyanopiperidine

1-[(tert-butoxy)carbonyl]-3-isocyanopyrrolidine

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

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

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

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

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

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

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

1-[(tert-butoxy)carbonyl]-3-methylazetidine-2-carboxylic acid

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

1-[(tert-butoxy)carbonyl]-3-methylideneazetidine-2-carboxylic acid

1-[(tert-butoxy)carbonyl]-3-methylpiperidine-2-carboxylic acid

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

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

1-[(tert-butoxy)carbonyl]-3-methylpyrrolidine-2-carboxylic acid

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

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

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

1-[(tert-butoxy)carbonyl]-3-phenyl-1,4-dihydroazete-2-carboxylic acid

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

1-[(tert-butoxy)carbonyl]-3-phenylpiperidine-2-carboxylic acid

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

1-[(tert-butoxy)carbonyl]-3-phenylpyrrolidine-2-carboxylic acid

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

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

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

1-[(tert-butoxy)carbonyl]-3-[(2-carboxyethyl)amino]azetidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-3-[(2-chlorothiophen-3-yl)methyl]azetidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-3-[(3,5-dichlorophenyl)methyl]azetidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-3-[(5-chlorothiophen-2-yl)methyl]azetidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-3-[(methylsulfanyl)methyl]azetidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-3-[(prop-2-en-1-yloxy)methyl]piperidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-3-[(prop-2-en-1-yloxy)methyl]pyrrolidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]azetidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-3-{[(tert-butoxy)carbonyl]amino}azetidine-3-carboxylic acid

1-[(tert-butoxy)carbonyl]-4',7'-dihydrospiro[piperidine-4,6'-pyrazolo[3,2-c][1,4]oxazine]-2'-carboxylic acid

1-[(tert-butoxy)carbonyl]-4'-(hydroxymethyl)-3'-oxaspiro[azetidine-3,2'-bicyclo[2.1.1]hexane]-1'-carboxylic acid

1-[(tert-butoxy)carbonyl]-4'-methyl-3'-oxaspiro[azetidine-3,2'-bicyclo[2.1.1]hexane]-1'-carboxylic acid