Diastereomeric spirooxindoles as highly potent and efficacious MDM2 inhibitors
Open accessAbstract
Small-molecule inhibitors that block the MDM2-p53 protein-protein interaction (MDM2 inhibitors) are being intensely pursued as a new therapeutic strategy for cancer treatment. We previously published a series of spirooxindole-containing compounds as a new class of MDM2 small-molecule inhibitors. We report herein a reversible ring-opening-cyclization reaction for some of these spirooxindoles, which affords four diastereomers from a single compound. Our biochemical binding data showed that the stereochemistry in this class of compounds has a major effect on their binding affinities to MDM2, with >100-fold difference between the most potent and the least potent stereoisomers. Our study has led to the identification of a set of highly potent MDM2 inhibitors with a stereochemistry that is different from that of our previously reported compounds. The most potent compound (MI-888) binds to MDM2 with a Ki value of 0.44 nM and achieves complete and long-lasting tumor regression in an animal model of human cancer.
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Appropriate stereochemistry is critical for good binding affinity in spirocyclic oxindole-based MDM2 inhibitors.
“In spirocyclic oxindole-based MDM2 inhibitors, the oxindole fragment occupies the Trp23-containing cleft of P53, and appropriate stereochemistry is critical for good binding affinity73,74.”
In spirocyclic oxindole-based MDM2 inhibitors, the oxindole fragment occupies the Trp23-containing cleft of P53.
“In spirocyclic oxindole-based MDM2 inhibitors, the oxindole fragment occupies the Trp23-containing cleft of P53, and appropriate stereochemistry is critical for good binding affinity73,74.”
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- Authors
- Zhao, Y., Liu, L., Sun, W., Lu, J., McEachern, D., Li, X., Yu, S., Bernard, D., Ochsenbein, P., Ferey, V., Carry, J.-C., Deschamps, J. R., Sun, D., & Wang, S.
- Affiliations
- University of Michigan (US)
- United States Naval Research Laboratory (US)
- Sanofi (France) (FR)
- Corresponding author
- Wang, Shaomeng
- ORCID
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-05-03
- Volume
- 135
- Issue
- 19
- Pages
- 7223-7234
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- PMC
- PMC3806051
- OpenAlex
- W1971921242
- Cited by
- 234
- References
- 25
- Citations by year
- 2026: 11 · 2025: 13 · 2024: 17 · 2023: 18 · 2022: 18 · 2021: 16 · 2020: 19 · 2019: 18 · 2018: 20 · 2017: 14 · 2016: 19 · 2015: 14 · 2014: 27 · 2013: 10
- FWCI
- 13.56
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Locations
- Journal of the American Chemical Society (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- Sanofi
- University of Michigan
- National Institute on Drug Abuse
- National Cancer Institute (P50CA097248, P50CA06956, R01CA121279, P30CA046592)
- Topics
- Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
- Physical Sciences › Chemistry › Organic Chemistry › Synthesis and biological activity
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
- Keywords
- MDM2 inhibitors, spirooxindoles, diastereomers, stereochemistry, p53-MDM2 interaction, ring-opening cyclization, small molecule inhibitors, cancer therapy, tumor regression
- MeSH terms
- Oxindoles, Animals, Antineoplastic Agents, Bone and Bones, Bone Neoplasms, Cyclization, Humans, Indoles, Models, Molecular, Osteosarcoma, Spiro Compounds, Stereoisomerism, Mice, SCID, Cell Line, Tumor, Proto-Oncogene Proteins c-mdm2
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