(1-Thieno[3,2-d]pyrimidin-4-yl-pyrrolidin-3-yl)-carbamic acid tert-butyl ester

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-{[(2-oxo-2,3-dihydro-1,3-thiazol-4-yl)methyl]carbamoyl}propanoic acid

2-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-(propan-2-yl)hexanamido]acetic acid

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

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

3-[3-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2-hydroxy-2-methylpropanoic acid

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N,2,2-trimethylbutanamido]-2-methylpropanoic acid

3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylbutanamido]-2-methylbutanoic acid

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

4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylbutanamido]-2-hydroxybutanoic acid

6-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)but-2-enamido]-4-methylhexanoic acid