3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(3-methyloxan-4-yl)carbamoyl]propanoic acid

3-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-1-methyl-1H-pyrazole-4-carboxylic acid

3-{1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropaneamido}-1-methyl-1H-pyrazole-4-carboxylic acid

rac-2-({[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}oxy)-3-methoxypropanoic acid

(3R)-4-methyl-3-{[(1rs,4rs)-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}pentanoic acid

2-[(2R)-1-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanoyl]piperidin-2-yl]acetic acid

2-[(2R)-1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopent-2-ene-1-carbonyl]piperidin-2-yl]acetic acid

4-{1,1-dioxo-hexahydro-2H-1lambda6-thieno[2,3-c]pyrrol-5-yl}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxobutanoic acid

2-[(2R)-1-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]acetyl}piperidin-2-yl]acetic acid

2-[(2R)-1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-difluoropropanoyl]piperidin-2-yl]acetic acid

2-[(2R)-1-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2-oxazole-3-carbonyl]piperidin-2-yl]acetic acid