2-(4-(Difluoromethyl)-2-iodo-5-(trifluoromethoxy)pyridin-3-yl)acetonitrile

2-[(1RS,2RS)-2-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]cyclohexyl]acetic acid

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

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

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

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

rac-(1R,2S)-2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]cyclohexane-1-carboxylic acid

2-{4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]oxan-3-yl}acetic acid

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

(1RS&,2SR&)-2-[(1RS,2SR)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexaneamido]cyclopentane-1-carboxylic acid

rac-2-{2-[(1R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]acetamido}-3-methoxy-2-methylpropanoic acid