2-(2-Amino-1,1-difluoroethyl)-5-methyl-1,3-oxazole-4-carboxylic acid

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

4-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyridin-2-yl]formamido}-3,3-dimethylbutanoic acid

4-({1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopentyl}formamido)-3,3-dimethylbutanoic acid

(2R)-1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanoyl]-4,4-difluoropyrrolidine-2-carboxylic acid

4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanoyl]-hexahydro-2H-furo[3,2-b]pyrrole-5-carboxylic acid

3-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1-methyl-1H-pyrazole-5-carbonyl]azetidin-3-yl}propanoic acid

7-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

3-Chloro-5-(3,5-dimethyl-4-isoxazolyl)pyridazine

7-[2-cyclobutyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetyl]-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

3-{1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanoyl]pyrrolidin-3-yl}propanoic acid