Discovery of Tricyclic Oxazinoquinolinone-Based BCL6 PROTAC Degraders with Potent Activity Against Diffuse Large B-Cell Lymphoma
B-cell lymphoma 6 (BCL6) is a key transcriptional repressor involved in the pathogenesis of diffuse large B-cell lymphoma (DLBCL). In this study, scaffold hopping of BI-3802 led to compound 1, a new tricyclic BCL6-targeting ligand. Further optimization of linker architecture and CRBN-recruiting motifs led to compound...