1-[4-(6-Cyclopropylpyrimidin-4-yl)piperazin-1-yl]ethan-1-one

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

5-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-3-yl}formamido)-2-methylpentanoic acid

2-(N-benzyl-1-{5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-3-yl}formamido)acetic acid

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

1-benzyl-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-methylhex-4-enamido]pyrrolidine-3-carboxylic acid

(2S)-2-[(2S)-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]butanoic acid

1-Chloro-4-iodo-2-(methoxymethoxy)benzene

2-({[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}oxy)-3-methoxypropanoic acid

rac-(1R,3R,5R)-3-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]butanamido}bicyclo[3.1.0]hexane-1-carboxylic acid

(3RS,4RS)-1-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanoyl]-3,4-dimethylpyrrolidine-3-carboxylic acid