3-(1H-pyrrol-2-yl)-5-(trifluoromethyl)-1,2-oxazole-4-carboxylic acid

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

2-[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]-5-methoxypentanoic acid

2-[(3R)-N-ethyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]acetic acid

(3S)-3-(2-chloro-1,3-thiazol-5-yl)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

(3S)-3-(5-chloropyridin-2-yl)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

(3S)-3-(1,4-dimethyl-1H-pyrazol-5-yl)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

1-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpropanamido]methyl}cyclohexane-1-carboxylic acid

rac-2-({1-[(2R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]-3-methylazetidin-3-yl}oxy)acetic acid

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(cyclopropylmethyl)-6-oxo-1,6-dihydropyrimidine-5-carboxylate

rac-2-({[(2R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}methyl)-2-methylbutanoic acid