Download MendeleyExtending the chemical space of glutarimide-based cereblon ligands through an efficient Rh(II)-catalyzed X-H insertion reaction.
Levashova, E., Bischof, L., Bunev, A., Sapegin, A., Grygor'eva, O., Kudinov, A., Ebeling, S., Tatarinov, I., Dar'in, D., Kantin, G., Hartmann, M.D., Kalinin, S.(2025) Eur J Med Chem 301: 118235-118235
- PubMed: 41086529
- DOI: https://doi.org/10.1016/j.ejmech.2025.118235
- Primary Citation of Related Structures:
9HTK, 9HTL, 9HTM, 9HTN, 9HTO, 9HTP, 9HTQ - PubMed Abstract:
In this work we present an easy, one-step synthetic protocol to explore a large chemical space of glutarimide-based cereblon (CRBN) ligands for targeted protein degradation. It is built upon our recently suggested approach to generating structurally diverse series of alpha-substituted glutarimide derivatives through an efficient Rh(II)-catalyzed X-H insertion reaction of 3-diazopiperidine-2,6-dione, with moderate to high yields. In total, 25 glutarimide derivatives incorporating variable side chains were synthesized and evaluated in vitro. All ligands showed a favorable lipophilicity, and several were able to outperform the binding affinity of thalidomide as a reference. In addition, most compounds showed low intrinsic cytotoxicity in myeloma cell lines and human peripheral blood mononuclear cells, and did not recruit canonical neosubstrates. A cellular thermal shift assay further demonstrated that the most potent analogs stabilize CRBN in live cells, confirming their on-target engagement. The development of the series was accompanied by a crystallographic study, which rationalizes the observed improvements in binding affinity and neosubstrate selectivity, and can support further development towards molecular glue activity and PROTACs design.
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia.
Organizational Affiliation:
