1-(2-Methoxyphenyl)-6-oxo-1,6-dihydropyridine-3-carboxylic acid

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

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 5-{1-[(tert-butoxy)carbonyl]pyrrolidin-2-yl}-1H-1,2,3-triazole-4-carboxylate

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

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

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

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 3-({[(tert-butoxy)carbonyl]amino}methyl)-1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentane-1-carboxylate

(9H-fluoren-9-yl)methyl 4-{1-[(tert-butoxy)carbonyl]-3-{2-[(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)oxy]-2-oxoethyl}azetidin-3-yl}piperazine-1-carboxylate

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

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1-phenylpiperidine-4-carboxylate

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