tert-butyl 4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-3-carboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 5-{[1,1'-biphenyl]-4-yl}thiophene-2-carboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-{2-[(1-methyl-1H-imidazol-2-yl)sulfanyl]acetamido}benzoate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 3-({imidazo[1,2-a]pyridin-2-yl}methoxy)benzoate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-[4-(2-oxopyrrolidin-1-yl)benzenesulfonamido]acetate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3-oxaspiro[bicyclo[2.1.1]hexane-2,4'-oxane]-1-carboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-methyl-3-oxaspiro[bicyclo[2.1.1]hexane-2,4'-oxane]-1-carboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-oxabicyclo[2.1.1]hexane-4-carboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 1-({[(tert-butoxy)carbonyl]amino}methyl)-3-methyl-2-oxabicyclo[2.1.1]hexane-4-carboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-(2-oxo-2,3-dihydro-1,3-oxazol-4-yl)benzoate

4-tert-butyl 7-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl) 3,4-dihydro-2H-1,4-benzoxazine-4,7-dicarboxylate