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Updated: May 16, 2026
Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
Published on: May 28, 2014
Theoretical investigations and density functional theory based quantitative structure-activity relationships model
Hristo P Varbanov1, Michael A Jakupec, Alexander Roller
1Institute of Inorganic Chemistry, University of Vienna , Währinger Strasse 42, A-1090 Vienna, Austria.
Abstract:
Octahedral platinum(IV) complexes are promising candidates in the fight against cancer. In order to rationalize the further development of this class of compounds, detailed studies on their mechanisms of action, toxicity, and resistance must be provided and structure-activity relationships must be drawn. Herein, we report on theoretical and QSAR investigations of a series of 53 novel bis-, tris-, and tetrakis(carboxylato)platinum(IV) complexes, synthesized and tested for cytotoxicity in our laboratories. The hybrid DFT functional wb97x was used for optimization of the structure geometry and calculation of the descriptors. Reliable and robust QSAR models with good explanatory and predictive properties were obtained for both the cisplatin sensitive cell line CH1 and the intrinsically cisplatin resistant cell line SW480, with a set of four descriptors.
Insights
This study developed quantitative structure-activity relationship (QSAR) models for novel platinum(IV) anticancer complexes. These models predict cytotoxicity in both cisplatin-sensitive and resistant cancer cell lines.
Area of Science:
- Medicinal Chemistry
- Computational Chemistry
- Cancer Research
Background:
- Octahedral platinum(IV) complexes show promise as anticancer agents.
- Understanding their mechanism of action, toxicity, and resistance is crucial for development.
- Structure-activity relationships (SAR) need to be established.
Purpose of the Study:
- To investigate the quantitative structure-activity relationships (QSAR) of novel platinum(IV) complexes.
- To develop predictive models for cytotoxicity against cancer cell lines.
- To aid in the rational design of new platinum-based anticancer drugs.
Main Methods:
- Synthesis and cytotoxicity testing of 53 novel bis-, tris-, and tetrakis(carboxylato)platinum(IV) complexes.
- Theoretical calculations using the hybrid DFT functional wb97x for structure optimization and descriptor calculation.
- Development of QSAR models using a set of four descriptors.
Main Results:
- Reliable and robust QSAR models were developed.
- Models demonstrated good explanatory and predictive properties.
- Successful modeling was achieved for both cisplatin-sensitive (CH1) and cisplatin-resistant (SW480) cell lines.
Conclusions:
- QSAR analysis provides valuable insights into the activity of platinum(IV) complexes.
- The developed models can guide the design of more effective platinum-based cancer therapies.
- This approach facilitates the rational development of novel anticancer drugs.
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