1-(6,7-Dihydro-5H-pyrazolo[1,5-a]pyrimidin-4-yl)prop-2-en-1-one

rac-methyl 5-[(1R,3S)-3-amino-2,2-dimethylcyclopropyl]-1-methyl-1H-pyrazole-3-carboxylate

5-Hydroxy-3-(2-methoxy-2-oxoethyl)-4,4-dimethylpentanoic acid

rac-(1R,3S)-3-{1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropaneamido}cyclopentane-1-carboxylic acid

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

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

(2S)-2-[3-cyclopropyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-difluoro-N-methylpropanamido]propanoic acid

rac-(1R,3S)-3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1-methyl-1H-pyrazole-5-amido]cyclopentane-1-carboxylic acid

3-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1-methyl-1H-pyrazol-5-yl]formamido}-4,4-difluorobutanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxo-4-[3-(propan-2-ylsulfanyl)piperidin-1-yl]butanoic acid

(4S)-4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-5,5,5-trifluoropentanoic acid