4-(4-Aminophenoxy)furo[2,3-b]pyridine-2-carboxylic acid methyl ester

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

2-[N-(cyclopropylmethyl)-2-ethyl-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]butanamido]acetic acid

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

(2S)-2-[6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]hexanoic acid

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

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

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-{[(2S)-1-[methyl(propan-2-yl)amino]propan-2-yl]carbamoyl}propanoic acid

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

2-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-(1-methyl-1H-pyrazol-4-yl)acetamido]ethoxy}acetic acid

2-[N-(cyclopropylmethyl)-1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxan-4-yl]formamido]acetic acid