1-[1-(6-Fluoro-1,3-benzothiazol-2-yl)piperidin-4-yl]-3-(2-methoxyethyl)imidazolidine-2,4-dione

4-[3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]benzoic acid

1-[3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-1,2,3,6-tetrahydropyridine-4-carboxylic acid

3-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}hexanoic acid

3-[benzyl(methyl)amino]-2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]propanoic acid

rac-1-[(3R,5R)-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolane-3-carbonyl]-3-methylazetidine-3-carboxylic acid

rac-2-{1-[(3R,5R)-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-3-yl]-N-(prop-2-yn-1-yl)formamido}acetic acid

(2S)-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpropanoyl]-4,4-difluoropyrrolidine-2-carboxylic acid

(2S)-1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-4,4-difluoropyrrolidine-2-carboxylic acid

5-{[(2S,3S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanamido]methyl}oxolane-3-carboxylic acid

(2R)-1-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanoyl]-4,4-difluoropyrrolidine-2-carboxylic acid