2-(4-Nitrophenyl)pyrimidine-5-carboxylic acid

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

Tert-butyl 4-((2-(2,6-dioxopiperidin-3-yl)-1,3-dioxoisoindolin-4-yl)methylene)piperidine-1-carboxylate

2-[1-benzyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyrrolidine-3-carbonyl]-2-azabicyclo[4.1.0]heptane-1-carboxylic acid

4-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylhexanamido]-3,3-dimethylbutanoic acid

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

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

(2S)-1-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1-methyl-1H-pyrazole-4-carbonyl]piperidine-2-carboxylic acid

3-[1-benzyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)piperidine-4-carbonyl]-3-azabicyclo[3.1.0]hexane-6-carboxylic acid

2-[4-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]cyclopentane-1-carboxylic acid

2-{1-[4-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]pyrrolidin-2-yl}acetic acid