(2S)-2-amino-3-(4-bromopyridin-2-yl)propanoic acid

2-{[2-(Piperidin-1-yl)pyridin-3-yl]oxy}acetic acid

(2S,3R)-2-{[(1RS,3RS,5RS)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)bicyclo[3.1.0]hexan-1-yl]formamido}-3-methoxybutanoic acid

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

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

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

2-cyclopropyl-2-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3,3,3-trifluoropropanamido}propanoic acid

3-{N-cyclopropyl-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3,3,3-trifluoropropanamido}propanoic acid

3-cyclopropyl-3-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3,3,3-trifluoropropanamido}propanoic acid

(2S)-2-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3,3,3-trifluoropropanamido}-4-methylpentanoic acid

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