1-(2-Methylthiazole-4-carbonyl)piperidine-3-carboxylic acid

2-{1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylhexanoyl]pyrrolidin-2-yl}acetic acid

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

5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-dimethylpentanamido]-2-methylpentanoic acid

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

rac-2-{1-[(1R,5R,6S)-6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)bicyclo[3.2.0]heptan-3-yl]-N-(prop-2-en-1-yl)formamido}acetic acid

2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3,3-trifluoro-2-methylpropanoyl]-5-oxopyrazolidine-3-carboxylic acid

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methoxybutanamido]benzoic acid

4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methoxybutanamido]benzoic acid

3-[3-cyclobutyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-propylpropanamido]propanoic acid

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