7-(furan-2-yl)-2-morpholino-5-(2-oxo-2-phenylethyl)thiazolo[4,5-d]pyridazin-4(5H)-one

2-{2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-pyrazol-1-yl]acetamido}-2-methylpropanoic acid

5-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-dimethylpropanamido]-3-methylpentanoic acid

(2R)-2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylcyclohexyl]formamido}propanoic acid

5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-3-methylpentanoic acid

2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)bicyclo[2.2.1]heptan-2-yl]formamido}butanoic acid

2-[N,4-diethyl-6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]acetic acid

4-ethyl-6-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpropanamido]hexanoic acid

4-{2-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]ethyl}-5-methylhexanoic acid

1-[({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]furan-2-yl}formamido)methyl]cyclopropane-1-carboxylic acid

4-({1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclobutyl}formamido)-4-methylpentanoic acid