Ethyl HDFP

3-[(4,4-difluoro-2-methylbutyl)carbamoyl]-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

4-[(4,4-difluoro-2-methylbutyl)carbamoyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

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

4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4,4-trifluorobutanoyl]morpholine-3-carboxylic acid

2-ethyl-2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4,4-trifluorobutanamido]butanoic acid

4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-({2-[(methoxycarbonyl)(methyl)amino]ethyl}carbamoyl)butanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(3-fluoropyrrolidin-1-yl)-4-oxobutanoic acid

3-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]-2-methylpropanoic acid

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

(2S)-1-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-2,3-dihydro-1H-indole-2-carboxylic acid