ethyl (2Z)-3-(pyrazin-2-yl)but-2-enoate

3-[2-cyclobutyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]pentanoic acid

2-[2-cyclobutyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]-2-ethylbutanoic acid

2-({1-[2-cyclobutyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetyl]-3-methylazetidin-3-yl}oxy)acetic acid

4-[2-cyclobutyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methylacetamido]oxolane-3-carboxylic acid

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

3-{[(2R,3S)-3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]methyl}-1-methyl-1H-pyrazole-5-carboxylic acid

2-({1-[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanoyl]-3-methylazetidin-3-yl}oxy)acetic acid

2-{4-[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanoyl]morpholin-2-yl}acetic acid

4-[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]oxane-4-carboxylic acid

1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)but-2-enoyl]-3,5-dimethylpiperidine-2-carboxylic acid