3,4-Dimethyl-2-(3-oxomorpholin-4-yl)benzoic acid

(3R)-3-{[(benzyloxy)carbonyl]amino}-3-(1-methyl-1H-1,2,3-triazol-5-yl)propanoic acid

3-{[(Tert-butoxy)carbonyl]amino}-3-(1-methylcyclobutyl)propanoic acid

3-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-4-methyl-1,3-thiazole-5-carbonyl}-1,3-thiazolidine-4-carboxylic acid

4-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazol-5-yl]formamido}butanoic acid

(2R)-2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazol-5-yl]formamido}butanoic acid

2-{N-tert-butyl-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazol-5-yl]formamido}acetic acid

5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazole-5-amido]pyridine-2-carboxylic acid

2-(1-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-thiazol-5-yl}-N-propylformamido)acetic acid

4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluorobutanoyl]morpholine-2-carboxylic acid

4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluorobutanamido]oxolane-3-carboxylic acid