(2S)-4,4-difluoro-2-methylpentan-1-ol

4-{1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclobutaneamido}-5-oxopyrrolidine-3-carboxylic acid

4-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetamido}-5-oxopyrrolidine-3-carboxylic acid

rac-4-[(1R,2S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropaneamido]-5-oxopyrrolidine-3-carboxylic acid

2-[(1RS&,3SR&)-3-[(1RS,3SR)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentaneamido]cyclopentyl]acetic acid

(3R)-3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]heptanoic acid

(2R)-2-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)heptanamido]-4-(methylsulfanyl)butanoic acid

1-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)heptanoyl]-3-hydroxyazetidine-3-carboxylic acid

5-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methylheptanamido]pentanoic acid

(1RS,2SR)-2-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)heptanamido]cyclopentane-1-carboxylic acid

3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]heptanoic acid