3-[3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]-3-cyclopentylpropanoic acid

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

6-chloro-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-2,3-dihydro-1H-indole-5-carboxylic acid

2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-iodo-4-methoxybenzoic acid

4-[ethyl({[(9H-fluoren-9-yl)methoxy]carbonyl})amino]quinazoline-7-carboxylic acid

Pyrazolo[1,5-a]pyrazine-5(4H)-carboxylic acid, 3-bromo-4-[[[(1,1-dimethylethoxy)carbonyl]amino]methyl]-6,7-dihydro-, phenylmethyl ester

4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-[(aminophenylacetyl)amino]-6-methoxy-3,3-dimethyl-7-oxo-, [2S-[2I+/-,5I+/-,6I+/-,6(S*)]]-

3-(4-{[(9H-fluoren-9-yl)methoxy]carbonyl}-5,7-dimethyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidin-6-yl)propanoic acid

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

2,6-dichloro-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyridine-3-carboxylic acid

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