6-(Bromomethyl)-3-chloro-5-(difluoromethyl)pyridin-2-amine

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanoyl]-octahydrocyclopenta[c]pyrrole-3a-carboxylic acid

2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanoyl]-octahydrocyclopenta[c]pyrrole-3a-carboxylic acid

(3R)-3-({3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxan-3-yl}formamido)butanoic acid

(3R)-3-{[(2RS,3SR)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}butanoic acid

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

(3R)-3-{2-[(1RS,2SR)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]acetamido}butanoic acid

(3R)-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-(1-methyl-1H-pyrazol-5-yl)acetamido]butanoic acid

2-[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-2,3-dihydro-1H-isoindole-5-carboxylic acid

1-[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-2,3-dihydro-1H-indole-5-carboxylic acid

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