Ethyl 2-(2-(4-(((benzyloxy)carbonyl)amino)-2-oxopyrimidin-1(2H)-yl)-N-(2-hydroxyethyl)acetamido)acetate

4-({3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-4-yl}formamido)but-2-enoic acid

1-[3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]-2-methylpiperidine-3-carboxylic acid

2-{2-[3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]cyclopentyl}acetic acid

1-{2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxan-4-yl]acetamido}cyclobutane-1-carboxylic acid

(2R)-2-{2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxan-4-yl]acetamido}-3-hydroxypropanoic acid

3-(N-benzyl-1-{5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]furan-2-yl}formamido)propanoic acid

5-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]methyl}pyridine-2-carboxylic acid

3-[2-(cyclopropylmethyl)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-4,4-difluorobutanoic acid

4-({2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-thiazol-5-yl}formamido)-3-methylbutanoic acid

rac-(3aR,6aR)-4-(2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]sulfanyl}acetyl)-hexahydro-2H-furo[3,2-b]pyrrole-5-carboxylic acid