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Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
Published on: May 28, 2014
DFT study of cisplatin@carbon nanohorns complexes.
Leonardo A De Souza1, Camila A S Nogueira, Juliana F Lopes
1Laboratório de Química Computacional e Modelagem Molecular (LQC-MM), Departamento de Química, ICEx, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil.
Journal of Inorganic Biochemistry
|October 5, 2013
Summary
This study shows carbon nanohorns (CNHs) can form stable complexes with cisplatin, a chemotherapy drug. This could reduce drug toxicity and improve cancer treatment effectiveness.
Area of Science:
- Computational Chemistry
- Materials Science
- Nanotechnology
Background:
- Cisplatin is a widely used chemotherapy drug with significant toxicity.
- Carbon nanohorns (CNHs) are novel nanostructures with potential applications in drug delivery.
- Encapsulating cisplatin within CNHs may mitigate its side effects and enhance therapeutic efficacy.
Purpose of the Study:
- To investigate the formation of inclusion complexes between carbon nanohorns and cisplatin.
- To computationally determine the stability and structural properties of these complexes.
- To provide theoretical data aiding experimental identification and characterization.
Main Methods:
- Density Functional Theory (DFT) with B3LYP functional and specific basis sets (6-31G(d,p)/LanL2DZ).
- Potential Energy Surface (PES) scans to find minimum energy structures.
- Calculation of stabilization energies, charge distribution, and NMR spectra ((1)H and (15)N).
Main Results:
- Stable inclusion complexes between CNHs and cisplatin were computationally confirmed.
- Significant changes in cisplatin's (1)H and (15)N NMR chemical shifts (~20ppm) upon complexation were predicted.
- Calculated stabilization energies and charge distributions indicate favorable interactions.
Conclusions:
- CNHs are suitable hosts for forming stable inclusion complexes with cisplatin.
- The predicted NMR spectral changes offer a clear experimental signature for identifying these complexes.
- This research supports the potential of CNH-cisplatin complexes for improved cancer therapy.
