5-(Bromomethyl)-2-ethyl-1,3-oxazole

rac-2-({[(2R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}methyl)cyclopentane-1-carboxylic acid

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

1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanoyl]-2-methylpyrrolidine-2-carboxylic acid

(2S)-4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]-2-hydroxybutanoic acid

1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanoyl]-4-methylpyrrolidine-3-carboxylic acid

4-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]hexanoic acid

(2S)-2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]-3-methylbutanoic acid

1-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-methylbutanoyl}-3-hydroxypyrrolidine-3-carboxylic acid

2-{[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylhexanamido]methyl}-2-methylbutanoic acid

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