{7-Azaspiro[3.5]nonan-5-yl}methanamine

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-{3-[(1R)-1-hydroxyethyl]azetidin-1-yl}-4-oxobutanoic acid

2-({2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)thian-4-yl]acetamido}oxy)propanoic acid

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

3-{[2-(3-bromothiophen-2-yl)ethyl]carbamoyl}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

rac-2-[(1R,2S)-2-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropaneamido}cyclopentyl]acetic acid

2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)bicyclo[3.1.0]hexan-1-yl]formamido}-3,3,3-trifluoropropanoic acid

(3S)-3-{[(tert-butoxy)carbonyl]amino}-3-(3-chloropyridin-4-yl)propanoic acid

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

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylbutanamido]-2-methylpentanoic acid

3-{3-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]phenyl}prop-2-enoic acid