7-butyl-8-[[4-(3-chlorophenyl)piperazin-1-yl]methyl]-1,3-dimethyl-5H-purin-7-ium-2,6-dione

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopent-2-ene-1-carbonyl]-2-azabicyclo[2.1.1]hexane-1-carboxylic acid

2-[2-cyclobutyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetyl]-2-azabicyclo[2.1.1]hexane-1-carboxylic acid

2-[(2S,3S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoyl]-2-azabicyclo[2.1.1]hexane-1-carboxylic acid

2-({3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-2-yl}formamido)-3,3,3-trifluoropropanoic acid

rac-4-[(2R,3R)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolane-2-amido]cyclopent-1-ene-1-carboxylic acid

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

2-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-3-yl}formamido)acetic acid

3-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-3-yl}formamido)-2-methoxypropanoic acid

5-(2-Fluoro-4-methoxyphenyl)-1-(propan-2-yl)-1,2,3,6-tetrahydropyridine

(3R)-3-[(2S,3R)-3-(tert-butoxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]butanoic acid