2-{[(3-Acetamidophenyl)methyl]sulfanyl}acetic acid

2-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methyl-N-(propan-2-yl)hexanamido]acetic acid

(2R)-2-{4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-5-methylhexanamido}propanoic acid

2-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]acetamido}-2-methylpentanoic acid

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

2-{N-cyclopropyl-1-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylcyclohexyl]formamido}acetic acid

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

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

2-{N-cyclopropyl-2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]acetamido}acetic acid

2-cyclohexyl-2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]acetic acid

(2S)-2-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylcyclohexyl]formamido}-3-methylbutanoic acid