2-[4-(methoxycarbonyl)-1-methyl-1H-pyrazol-5-yl]-2-methylpropanoic acid

(2R)-2-({2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-thiazol-5-yl}formamido)-4-hydroxybutanoic acid

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

3-{N-cyclopropyl-1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1-methyl-1H-pyrazol-3-yl]formamido}propanoic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-ynamido]-1-methyl-1H-pyrazole-5-carboxylic acid

2-({[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-3-yl]formamido}methyl)-1,3-thiazole-5-carboxylic acid

(2R)-2-{[(1RS,3SR)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}-3-hydroxypropanoic acid

3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-3-amido]-1-methyl-1H-pyrazole-5-carboxylic acid

4-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]acetamido}-1-methyl-1H-pyrazole-5-carboxylic acid

4-{3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]propanamido}-1-methyl-1H-pyrazole-5-carboxylic acid

2-(3-{[(Tert-butoxy)carbonyl]amino}oxan-3-yl)acetic acid