(2R)-2-(ethylamino)-3-(naphthalen-2-yl)propanoic acid

2-({[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,6-difluorophenyl]formamido}oxy)propanoic acid

1-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazol-4-yl]acetyl}-3,3-dimethylazetidine-2-carboxylic acid

tert-butyl (4aS,7S,7aR)-7-(hydroxymethyl)-1,3,4,4a,5,6,7,7a-octahydrocyclopenta[c]pyridine-2-carboxylate

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-2-methylmorpholine-2-carboxylic acid

rac-(2R,3S)-3-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohex-3-ene-1-amido]oxolane-2-carboxylic acid

Methyl (S)-3-fluoropyrrolidine-3-carboxylate hydrochloride

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

rac-(1R,3S)-3-{[3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]methyl}-2,2-difluorocyclopropane-1-carboxylic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[({2-thiaspiro[3.3]heptan-6-yl}methyl)carbamoyl]propanoic acid

rac-(1R,3R)-3-{3-[benzyl(methyl)amino]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido}cyclohexane-1-carboxylic acid