4,7-Dimethoxy-1H-indole-2-carbaldehyde

rac-3-{[(1R,3R,5R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)bicyclo[3.1.0]hexan-1-yl]formamido}propanoic acid

(2S)-2-{[(1RS,3RS,5RS)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)bicyclo[3.1.0]hexan-1-yl]formamido}-3-hydroxypropanoic acid

4-[(2-{[(tert-butoxy)carbonyl]amino}-1,2,3,4-tetrahydronaphthalen-1-yl)({[(9H-fluoren-9-yl)methoxy]carbonyl})amino]butanoic acid

4-({1'-[(tert-butoxy)carbonyl]-3,4-dihydrospiro[1-benzopyran-2,3'-pyrrolidin]-4-yl}({[(9H-fluoren-9-yl)methoxy]carbonyl})amino)butanoic acid

4-({1-[(tert-butoxy)carbonyl]-4-cyanopyrrolidin-3-yl}({[(9H-fluoren-9-yl)methoxy]carbonyl})amino)butanoic acid

4-({1-[(tert-butoxy)carbonyl]-4,4-dimethylpyrrolidin-3-yl}({[(9H-fluoren-9-yl)methoxy]carbonyl})amino)butanoic acid

4-[(6-{[(tert-butoxy)carbonyl]amino}-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-4-yl)({[(9H-fluoren-9-yl)methoxy]carbonyl})amino]butanoic acid

4-({3-[(tert-butoxy)carbonyl]-3-azaspiro[5.5]undecan-7-yl}({[(9H-fluoren-9-yl)methoxy]carbonyl})amino)butanoic acid

4-{[(1R,5S)-3-[(tert-butoxy)carbonyl]-3-azabicyclo[3.2.0]heptan-6-yl]({[(9H-fluoren-9-yl)methoxy]carbonyl})amino}butanoic acid

4-({1-[(tert-butoxy)carbonyl]-3-(oxolan-3-yl)piperidin-4-yl}({[(9H-fluoren-9-yl)methoxy]carbonyl})amino)butanoic acid