1-(5-Amino-6-fluoropyrimidin-4-yl)azetidine-2-carboxamide

2-[2-(ethyl carboxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-propylacetamido]acetic acid

4-[2-(ethyl carboxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]-2-methylbutanoic acid

(2RS,3RS)-1-[(2S)-4-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxobutanoyl]-2-methylpiperidine-3-carboxylic acid

3-{2-[(2S)-3-(benzyl carboxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]ethoxy}propanoic acid

2-{2-[(2S)-3-(benzyl carboxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]acetamido}acetic acid

2-[(2S)-3-(benzyl carboxy)-N-ethyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2-methylpropanoic acid

(2S)-2-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]-4-methoxy-4-oxobutanoic acid

3-[(2S)-3-(benzyl carboxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-3-cyclopropylbutanoic acid

rac-(3R,4R)-1-[3-ethoxy-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-oxopropanoyl]-4-methylpyrrolidine-3-carboxylic acid

2-[2-(ethyl carboxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-(2-methylpropyl)acetamido]acetic acid