5-Chloro-3-(2,2,2-trifluoroacetamido)pyrazine-2-carboxylic acid

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 1-(2-chlorophenyl)-5-oxopyrrolidine-3-carboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl (2S)-3-(2-chlorophenyl)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl (2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanoate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 1-(benzyloxy)-5-oxopyrrolidine-3-carboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-[(4-{[(tert-butoxy)carbonyl]amino}phenyl)methyl]-1,3-thiazole-4-carboxylate

tert-butyl 3-(4-{[(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)oxy]carbonyl}-1H-pyrazol-1-yl)piperidine-1-carboxylate

3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl) 8-(9H-fluoren-9-yl)methyl 1-oxa-2,8-diazaspiro[4.5]dec-2-ene-3,8-dicarboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-[benzyl(2-{[(tert-butoxy)carbonyl]amino}ethyl)amino]acetate

5-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl) 2-(9H-fluoren-9-yl)methyl 1,2,3,4-tetrahydroisoquinoline-2,5-dicarboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl (2R)-6-{[(tert-butoxy)carbonyl]amino}-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanoate