5-(allyloxy)-1-carbamoyl-1H-indole-3-carboxylic acid

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanamido]-4,4-dimethylpentanoic acid

2-(cyclopropylmethyl)-3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanamido]propanoic acid

2-{4-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanoyl]morpholin-2-yl}acetic acid

4-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methylpentanamido]oxolane-3-carboxylic acid

4-{2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-pyrazol-1-yl]acetamido}-2-methylbut-2-enoic acid

4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]-2-methylbutanoic acid

(2R)-2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]pentanoic acid

4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]hexanoic acid

3-[N-methyl4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2,5-oxadiazole-3-amido]cyclobutane-1-carboxylic acid

3-[(2S)-3-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methylpropanamido]cyclobutane-1-carboxylic acid