{1-[(4-Ethylphenyl)methyl]piperidin-4-yl}methanol

2-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-5,5-dimethylhexanoic acid

6-[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]-4-ethylhexanoic acid

2-{[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]methyl}-4,4-dimethylpentanoic acid

3-cyclobutyl-3-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2-oxazol-3-yl]formamido}propanoic acid

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

3-cyclobutyl-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]propanoic acid

(3S)-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hex-5-enamido]-4-methylpentanoic acid

(3S)-3-{[(1RS,2SR)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}-4-methylpentanoic acid

1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylcyclohexanecarbonyl]-3-methylazetidine-3-carboxylic acid

rac-(1R,2S)-2-({[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylcyclohexyl]formamido}methyl)cyclopropane-1-carboxylic acid