(2S)-2-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]-4-methoxy-4-oxobutanoic acid

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

1-[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetyl]-1H,2H,3H-pyrazolo[1,5-a]imidazole-7-carboxylic acid

1-(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]sulfanyl}acetyl)-1H,2H,3H-pyrazolo[1,5-a]imidazole-7-carboxylic acid

1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanoyl]-1H,2H,3H-pyrazolo[1,5-a]imidazole-7-carboxylic acid

2-{[2-(cyclohexylmethyl)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]oxy}acetic acid

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

rac-3-{[(1R,2R)-2-ethylcyclopropyl]carbamoyl}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

[1-(4-methoxybutyl)-5-(propan-2-yl)-1H-1,2,3-triazol-4-yl]methanol

[5-cyclopropyl-1-(pentan-3-yl)-1H-1,2,3-triazol-4-yl]methanol

[5-cyclopropyl-1-(1-cyclopropylethyl)-1H-1,2,3-triazol-4-yl]methanol