Discovery, Synthesis, and Biological Evaluation of Orally Active Pyrrolidone Derivatives as Novel Inhibitors of p53–MDM2 Protein–Protein Interaction
Abstract
The p53-MDM2 interaction has been proved to be a valuable target to develop effective antitumor agents. Novel p53-MDM2 inhibitors bearing pyrrolidone scaffolds were successfully identified by structure-based design. The nanomolar inhibitor 5 possessed good p53-MDM2 inhibitory activity (K(i) = 780 nM) due to its hydrophobic and hydrogen bonding interactions with MDM2. Further hit optimization led to the discovery of a number of highly potent pyrrolidone derivatives with improved p53-MDM2 inhibitory activity and in vitro antiproliferative potency. Compounds 41 (K(i) = 260.0 nM) and 60a (K(i) = 150.0 nM) showed good and selective activity against tumor cells with deleted p53. In addition, these two compounds also effectively inhibited the tumor growth in the A549 xenograft model. Interestingly, compound 41 was proved to be a potent MDM2/MDMX dual inhibitor. The novel pyrrolidone p53-MDM2 inhibitors represent promising lead structures for the development of novel antitumor agents.
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By employing structure-based virtual screening, they identified a quinazolinone fragment, hit 4 (Kd = 467 ± 65 nM), with two optical isomers that acted on different "hot spots" of PDEδ.
“By employing structure-based virtual screening, they identified a quinazolinone fragment, hit 4 (Kd = 467 ± 65 nM), with two optical isomers that acted on different “hot spots” of PDEδ.349–352”
From Recent advances in targeting the “undruggable” proteins: from drug discovery to clinical trials (2023) · cites this paper as [349]
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- Authors
- Zhuang, C., Miao, Z., Zhu, L., Dong, G., Guo, Z., Wang, S., Zhang, Y., Wu, Y., Yao, J., Sheng, C., & Zhang, W.
- Affiliations
- Second Military Medical University (CN)
- Corresponding author
- Sheng, Chunquan
- Zhang, Wannian
- ORCID
- Venue
- Journal of Medicinal Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-10-19
- Volume
- 55
- Issue
- 22
- Pages
- 9630-9642
- ISSN
- 0022-2623 (ISSN-L)
- 1520-4804
- OpenAlex
- W2066303715
- Cited by
- 131
- References
- 51
- Citations by year
- 2026: 5 · 2025: 8 · 2024: 4 · 2023: 10 · 2022: 10 · 2021: 10 · 2020: 12 · 2019: 11 · 2018: 8 · 2017: 10 · 2016: 8 · 2015: 5 · 2014: 19 · 2013: 10 · 2012: 1
- FWCI
- 6.16
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Medicinal Chemistry (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
- Physical Sciences › Chemistry › Organic Chemistry › Synthesis and biological activity
- Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
- Keywords
- p53-MDM2 interaction, protein-protein interaction inhibitors, pyrrolidinone derivatives, structure-based drug design, anticancer agents, A549 xenograft, antiproliferative activity, hit optimization
- MeSH terms
- Administration, Oral, Animals, Antineoplastic Agents, Humans, Imidazoles, Male, Mice, Inbred BALB C, Mice, Nude, Models, Molecular, Neoplasms, Nuclear Proteins, Protein Binding, Proto-Oncogene Proteins, Pyrrolidinones, Structure-Activity Relationship, Blotting, Western, Tumor Suppressor Protein p53, Apoptosis, Cell Cycle Proteins, Cell Proliferation, Mice, Proto-Oncogene Proteins c-mdm2
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