Platinum complexes of a boron-rich diphosphine ligand

2020 ◽  
Vol 49 (45) ◽  
pp. 16312-16318
Author(s):  
Marcus W. Drover ◽  
Eric G. Bowes ◽  
Maeve C. Dufour ◽  
Lindsay A. Lesperance-Nantau
Keyword(s):  
Platinum Complexes ◽  
Diphosphine Ligand

Herein, we describe the preparation, characterization, and reactivity of two PtII bis-hydrocarbyl complexes containing the 1,2-bis(di(3-dicyclohexylboraneyl)propylphosphino)ethane (P2BCy4) ligand.

scholarly journals First Attempts of the Use of 195Pt NMR of Phenylbenzothiazole Complexes as Spectroscopic Technique for the Cancer Diagnosis

Molecules ◽  
2019 ◽  
Vol 24 (21) ◽  
pp. 3970 ◽  
Author(s):  
Bruna T. L. Pereira ◽  
Mateus A. Gonçalves ◽  
Daiana T. Mancini ◽  
Kamil Kuca ◽  
Teodorico C. Ramalho
Keyword(s):  
Cancer Treatment ◽  
Cancer Diagnosis ◽  
Density Functional ◽  
Chemical Shifts ◽  
Chloride Ion ◽  
Platinum Complexes ◽  
Dft Method ◽  
Ion Concentration ◽  
Implicit Solvent ◽  
Early Cancer Diagnosis

Platinum complexes have been studied for cancer treatment for several decades. Furthermore, another important platinum characteristic is related to its chemical shifts, in which some studies have shown that the 195Pt chemical shifts are very sensitive to the environment, coordination sphere, and oxidation state. Based on this relevant feature, Pt complexes can be proposed as potential probes for NMR spectroscopy, as the chemical shifts values will be different in different tissues (healthy and damaged) Therefore, in this paper, the main goal was to investigate the behavior of Pt chemical shifts in the different environments. Calculations were carried out in vacuum, implicit solvent, and inside the active site of P13K enzyme, which is related with breast cancer, using the density functional theory (DFT) method. Moreover, the investigation of platinum complexes with a selective moiety can contribute to early cancer diagnosis. Accordingly, the Pt complexes selected for this study presented a selective moiety, the 2-(4′aminophenyl)benzothiazole derivative. More specifically, two Pt complexes were used herein: One containing chlorine ligands and one containing water in place of chlorine. Some studies have shown that platinum complexes coordinated to chlorine atoms may suffer hydrolyses inside the cell due to the low chloride ion concentration. Thus, the same calculations were performed for both complexes. The results showed that both complexes presented different chemical shift values in the different proposed environments. Therefore, this paper shows that platinum complexes can be a potential probe in biological systems, and they should be studied not only for cancer treatment, but also for diagnosis.

Mustards-Derived Terpyridine–Platinum Complexes as Anticancer Agents: DNA Alkylation vs Coordination

2021 ◽  
Vol 60 (4) ◽  
pp. 2414-2424
Author(s):  
Muneebah Adams ◽  
Matthew P. Sullivan ◽  
Kelvin K. H. Tong ◽  
David C. Goldstone ◽  
Muhammad Hanif ◽  
...  
Keyword(s):  
Anticancer Agents ◽  
Platinum Complexes ◽  
Dna Alkylation

Novel platinum complexes: Synthesis, characterization and molecular docking

2021 ◽  
Author(s):  
Mohammed N. Jasim ◽  
Abdulqader M. Abdulqader ◽  
Mohammed A. Awad
Keyword(s):  
Molecular Docking ◽  
Platinum Complexes

scholarly journals Platinum Complexes in Colorectal Cancer and Other Solid Tumors

Cancers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 2073
Author(s):  
Beate Köberle ◽  
Sarah Schoch
Keyword(s):  
Colorectal Cancer ◽  
Dna Damage ◽  
Dna Repair ◽  
Cancer Cells ◽  
Cisplatin Resistance ◽  
Platinum Complexes ◽  
Dna Lesions ◽  
Dna Damage Signaling ◽  
Repair Mechanisms ◽  
P53 Inactivation

Cisplatin is one of the most commonly used drugs for the treatment of various solid neoplasms, including testicular, lung, ovarian, head and neck, and bladder cancers. Unfortunately, the therapeutic efficacy of cisplatin against colorectal cancer is poor. Various mechanisms appear to contribute to cisplatin resistance in cancer cells, including reduced drug accumulation, enhanced drug detoxification, modulation of DNA repair mechanisms, and finally alterations in cisplatin DNA damage signaling preventing apoptosis in cancer cells. Regarding colorectal cancer, defects in mismatch repair and altered p53-mediated DNA damage signaling are the main factors controlling the resistance phenotype. In particular, p53 inactivation appears to be associated with chemoresistance and poor prognosis. To overcome resistance in cancers, several strategies can be envisaged. Improved cisplatin analogues, which retain activity in resistant cancer, might be applied. Targeting p53-mediated DNA damage signaling provides another therapeutic strategy to circumvent cisplatin resistance. This review provides an overview on the DNA repair pathways involved in the processing of cisplatin damage and will describe signal transduction from cisplatin DNA lesions, with special attention given to colorectal cancer cells. Furthermore, examples for improved platinum compounds and biochemical modulators of cisplatin DNA damage signaling will be presented in the context of colon cancer therapy.

The Chemistry of Antitumour Platinum Complexes

1981 ◽  
Vol 50 (4) ◽  
pp. 353-367 ◽  
Author(s):  
A I Stetsenko ◽  
M A Presnov ◽  
A L Konovalova
Keyword(s):  
Platinum Complexes

scholarly journals Front Cover: Ligand Effects in Carbon−Boron Coupling Processes Mediated by σ‐BH Platinum Complexes (Eur. J. Inorg. Chem. 35/2021)

2021 ◽  
Vol 2021 (35) ◽  
pp. 3517-3517
Author(s):  
Pablo Ríos ◽  
Francisco José Fernández‐de‐Córdova ◽  
Javier Borge ◽  
Natalia Curado ◽  
Agustí Lledós ◽  
...  
Keyword(s):  
Platinum Complexes ◽  
Front Cover ◽  
Ligand Effects ◽  
Coupling Processes
Sign in / Sign up

Export Citation Format

Share Document