3-(1-Oxo-6-piperazin-1-yl-isoindolin-2-yl)piperidine-2,6-dione is a thalidomide-derived cereblon (CRBN) E3 ligase ligand featuring a piperazine-substituted isoindolinone core. This optimized building block enables PROTAC design and targeted protein degradation by recruiting the CRBN ubiquitin ligase complex, facilitating selective elimination of disease-relevant proteins in drug discovery.
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