N-[(2-cyclopropyl-1,3-thiazol-4-yl)methyl]hydroxylamine

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

(3R)-3-(2-chloro-4-hydroxyphenyl)-3-hydroxypropanoic acid

1-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-3-propylpiperidine-3-carboxylic acid

(2R)-3-cyclohexyl-2-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]propanoic acid

2-{1-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methylbutanamido]cyclohexyl}acetic acid

2-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]-4,5-difluorobenzoic acid

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

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

3-(2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}ethoxy)propanoic acid

5-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutaneamido]pyridine-3-carboxylic acid