1-(Cyclopropylmethyl)-5-(trifluoromethyl)triazole-4-carboxylic acid

4-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-4,4-dimethylpentanamido}pentanoic acid

2-ethyl-2-({3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]propanamido}methyl)butanoic acid

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

2-cyclohexyl-2-(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]sulfanyl}acetamido)acetic acid

4-bromo-2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]benzoic acid

(3S)-3-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]methyl}-5-methylhexanoic acid

1-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpentanamido]methyl}cyclopropane-1-carboxylic acid

2-[(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]sulfanyl}acetamido)methyl]-4-methyl-1,3-thiazole-5-carboxylic acid

3-(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]sulfanyl}-N-methylacetamido)propanoic acid

2-{[1-(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]sulfanyl}acetyl)-3-methylazetidin-3-yl]oxy}acetic acid