3-[(2S)-N-benzyl-3-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]propanoic acid

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

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 6-{[(tert-butoxy)carbonyl]amino}pyridine-3-carboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-(benzyloxy)oxane-4-carboxylate

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

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-[1-({[(benzyloxy)carbonyl]amino}methyl)cyclohexyl]acetate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 3-{1,4-dimethyl-3,6-dioxo-1H,2H,3H,6H,7H-pyrazolo[3,4-b]pyridin-5-yl}propanoate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-{8-ethyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl}acetate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(pyrrolidin-1-yl)quinoline-3-carboxylate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 5-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)pentanoate

1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(3-tert-butyl-1,2,4-oxadiazol-5-yl)benzoate