2-Methyl-2-phenylpentanedioic acid

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

6-[3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]hexanoic acid

2-{3-[benzyl(methyl)amino]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methylpropanamido}benzoic acid

4-{3-[benzyl(methyl)amino]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido}oxolane-3-carboxylic acid

2-(5-{3-[benzyl(methyl)amino]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido}pyridin-2-yl)acetic acid

1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutanecarbonyl]-2-methylpiperidine-2-carboxylic acid

2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutaneamido]cyclohexane-1-carboxylic acid

3-{[(1-ethyl-1H-pyrazol-4-yl)methyl](methyl)carbamoyl}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

4-{[2-(1,3-dithiolan-2-yl)ethyl]carbamoyl}-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

(2S)-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanamido]-2-hydroxypropanoic acid