4-[8-Chloro-2-imidazol-1-yl-6-(5-methyl-1,3,4-oxadiazol-2-yl)pyrido[3,2-d]pyrimidin-4-yl]morpholine

4-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutanecarbonyl]morpholine-2-carboxylic acid

3-({[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}methyl)pentanoic acid

4-(2-chlorophenyl)-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}pyrrolidine-3-carboxylic acid

rac-(3R,4S)-4-(3-bromo-4-methoxyphenyl)-1-[(tert-butoxy)carbonyl]pyrrolidine-3-carboxylic acid

1-[(Benzyloxy)carbonyl]-4-(3-bromo-4-methoxyphenyl)pyrrolidine-3-carboxylic acid

1-[(Benzyloxy)carbonyl]-4-(2-methoxy-5-methylphenyl)pyrrolidine-3-carboxylic acid

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

2,2-Difluoro-3,4-dihydroxy-3,4-dimethylpentanoic acid

2-{[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]methyl}butanoic acid

rac-2-{1-[(3R,5R)-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolane-3-carbonyl]pyrrolidin-3-yl}acetic acid