3-(Difluoromethyl)-4,5-difluoropyridin-2-ol

(2S)-1-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoyl]piperidine-2-carboxylic acid

(2S)-2-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]formamido}-5-methoxy-5-oxopentanoic acid

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

2-{1-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyridin-2-yl]-N-(prop-2-en-1-yl)formamido}acetic acid

2-cyclohexyl-2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanamido]acetic acid

4-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-2-fluorobenzoic acid

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

3-{1-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanoyl]pyrrolidin-3-yl}propanoic acid

2-{1-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylhexanoyl]azetidin-3-yl}propanoic acid

2-[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]-5-iodobenzoic acid