N-(Cyclopentylmethyl)-N-ethylglycine

rac-2-ethyl-1-[(1R,2S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropanecarbonyl]pyrrolidine-2-carboxylic acid

2-{3-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]cyclobutyl}acetic acid

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

5-{6,6-difluoro-3-azabicyclo[3.1.0]hexan-3-yl}-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-oxopentanoic acid

3-(N-cyclopropyl-1-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopentyl}formamido)propanoic acid

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3,3-trifluoropropanoyl]-1,4-oxazepane-6-carboxylic acid

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

(1RS,3SR)-3-{[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanamido]methyl}-2,2-difluorocyclopropane-1-carboxylic acid

3-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]methyl}-2,2-difluorocyclopropane-1-carboxylic acid

3-[(1-cyclopentyl-2-hydroxyethyl)carbamoyl]-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid