(S)-2-Amino-N-methyl-N-(pyridin-4-ylmethyl)propanamide

2-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]acetamido}-5,5-dimethylhexanoic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5,5-dimethylhexanamido]-3-methylbutanoic acid

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

(2S)-2-({2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-5-methyl-1,3-thiazol-4-yl}formamido)-3-hydroxypropanoic acid

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

2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}-5,5-dimethylhexanoic acid

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxypropanamido]cyclohexane-1-carboxylic acid

3-({bicyclo[3.2.0]heptan-2-yl}carbamoyl)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(3-fluoro-4-hydroxypiperidin-1-yl)-4-oxobutanoic acid

4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-{[(4-oxo-1,4-dihydropyridin-2-yl)methyl]carbamoyl}butanoic acid