3006788-11-7

XYD049 (compound 7d) is a CRBN-type molecular glue targeting GSPT1, with a DC50 of 19 nM, used for researching MYC-driven castration-resistant prostate cancer (CRPC). It effectively inhibits the growth of 22Rv1 cells (IC50 = 7 nM) and exhibits antitumor efficacy in vivo. XYD049 downregulates CRPC-associated oncogenes in 22Rv1 cells, including AR, AR-v7, PSA, and c-Myc. XYD049 comprises a molecular glue linker (black part) NH2-C5-NH-Boc, a CRBN-type E3 ligase ligand (blue part) Thalidomide 4-fluoride, and a target protein ligand (red part) GSPT1 ligand-1, with the E3 ligase ligand + linker forming the conjugate E3 Ligase Ligand-linker Conjugate 158.