4-(4-Methoxycarbonyl-thiazol-5-yl)-piperazine-1-carboxylic acid tert-butyl ester

(2S)-2-{2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)thian-4-yl]acetamido}pentanoic acid

2-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}-5-methylhex-4-enoic acid

2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}-5-methylhex-4-enoic acid

2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-3-yl]formamido}-5-methylhex-4-enoic acid

2-{3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]pentanamido}-5-methylhex-4-enoic acid

rac-2-{[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}-3-methoxy-2-methylpropanoic acid

3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-1-methyl-1H-pyrazole-4-carboxylic acid

3-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutaneamido]-1-methyl-1H-pyrazole-4-carboxylic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]-1-methyl-1H-pyrazole-4-carboxylic acid

rac-2-{[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}acetic acid