3,4,5,6-Tetrahydro-5-methyl-2,3'-bipyridine

1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-(1-methyl-1H-pyrazol-5-yl)acetyl]azetidine-2-carboxylic acid

2-{4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpropanoyl]-1,1-dioxo-1lambda6-thiomorpholin-2-yl}acetic acid

5-{N-ethyl-1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopent-2-en-1-yl]formamido}pentanoic acid

(2R)-2-{[1-benzyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)piperidin-4-yl]formamido}-3,3-dimethylbutanoic acid

2-{[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]methyl}-4-methyl-1,3-thiazole-5-carboxylic acid

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

4-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanamido]-2-methylbut-2-enoic acid

2-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoyl]-4-methyl-2-azabicyclo[2.1.1]hexane-1-carboxylic acid

2-[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetyl]-4-methyl-2-azabicyclo[2.1.1]hexane-1-carboxylic acid

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