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Journal articles on the topic 'Platinum complexes'

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Published: 4 June 2021
Last updated: 6 September 2023

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1

&NA;. "Platinum complexes." Reactions Weekly &NA;, no. 508 (July 1994): 12. http://dx.doi.org/10.2165/00128415-199405080-00062.

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2

Al-Allaf, Talal A. K., and Abeer Z. M. Sheet. "Platinum group metal Schiff base complexes—I. Platinum complexes." Polyhedron 14, no. 2 (January 1995): 239–48. http://dx.doi.org/10.1016/0277-5387(94)00231-3.

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3

Bednarski, Patrick, Fiona Mackay, and Peter Sadler. "Photoactivatable Platinum Complexes." Anti-Cancer Agents in Medicinal Chemistry 7, no. 1 (January 1, 2007): 75–93. http://dx.doi.org/10.2174/187152007779314053.

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4

Kiwada, Tatsuto, Hiromu Katakasu, Serina Okumura, and Akira Odani. "Characterization of platinum(II) complexes exhibiting inhibitory activity against the 20S proteasome." Royal Society Open Science 7, no. 8 (August 2020): 200545. http://dx.doi.org/10.1098/rsos.200545.

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Proteasome inhibitors are useful for biochemical research and clinical treatment. In our previous study, we reported that the 4N-coordinated platinum complexes with anthracenyl ring and heterocycle exhibited proteasome-inhibitory activity. In the present study, the structure–activity relationships and characterization of these complexes were determined for the elucidation of the role of aromatic ligands. Lineweaver–Burk analysis revealed that the chemical structure of heterocycles affects the binding mode of platinum complexes. Platinum complexes with anthracenyl ring and pyridine showed competitive inhibition, although platinum complexes with anthracenyl ring and phenanthroline showed non-competitive inhibition. The structure–activity relationships demonstrated that anthracenyl moiety plays a crucial role in proteasome-inhibitory activity. The platinum complexes with naphthyl or phenyl rings exhibited lower inhibitory activities than the platinum complex with anthracenyl ring. The reactivity with N-acetylcysteine varied according to the chemical structure of complexes.
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5

Chung, Min Chul, Woong Kyu Jo, Seak Hwan Son, Chee Hun Kwak, Ji Hoon Lee, and Ho Geun Ahn. "Synthesis and Characterization of the Monomeric Platinum(II) Complexes with 2,2’-Bipyridine Back-Bone Ligand." Advanced Materials Research 554-556 (July 2012): 811–15. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.811.

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The reaction of platinum(II) complexes of [Pt(bpy-R)Cl2] (R = H; 2,2’-bipyridine(bpy), R = 2(CH)3; 4,4’-dimethyl-2,2’-biypridine (DM-bpy), R = 4(CH3); 3,3’-5,5’-tertamethyl-2,2’-bipyridiyl (TM-bpy), (1-3) or [Pt(1,10-phen-R’)Cl2] (R’ = H; 1,10-phenanthroline(1,10-phen), R’= 4(CH3); 3,4,7,8-tetramethyl-1,10-phenanthroline(3,4,7,8-tetramethyl-1,10-phen) (4-5) with 1,4-bis(5'-2',2"-bipyridine)benzene(bpy-Ph-bpy) affords the following monomeric platinium(II) complexes: [Pt(bpy)(bpy-Ph-bpy)]2+(1), [Pt(DM-bpy)(bpy-Ph-bpy)](2), and [Pt(TM-bpy)(bpy-ph-bpy)]2+(3), [Pt(1,10-phenanthroline)(bpy-ph-bpy)]2+2+(4), [Pt(3,4,7,82+-tetramethyl-1,10-phen)(bpy-ph-bpy)]2+(5), respectively. These complexes were characterized by NMR, IR, UV/VIS and PL spectroscopy of the complexes were elucidated. The internal quantum yields of these platinum complexes are very high (0.13 ~ 0.99) and they emit light in the blue region (360 ~ 417 nm).
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6

Coffetti, Giulia, Martina Moraschi, Giorgio Facchetti, and Isabella Rimoldi. "The Challenging Treatment of Cisplatin-Resistant Tumors: State of the Art and Future Perspectives." Molecules 28, no. 8 (April 12, 2023): 3407. http://dx.doi.org/10.3390/molecules28083407.

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One of the main problems in chemotherapy using platinum drugs as anticancer agents is the resistance phenomenon. Synthesizing and evaluating valid alternative compounds is challenging. This review focuses on the last two years of progress in the studies of platinum (II)- and platinum (IV)-based anticancer complexes. In particular, the research studies reported herein focus on the capability of some platinum-based anticancer agents to bypass resistance to chemotherapy, which is typical of well-known drugs such as cisplatin. Regarding platinum (II) complexes, this review deals with complexes in trans conformation; complexes containing bioactive ligands, as well as those that are differently charged, all experience a different reaction mechanism compared with cisplatin. Regarding platinum (IV) compounds, the focus was on complexes with biologically active ancillary ligands that exert a synergistic effect with platinum (II)-active complexes upon reduction, or those for which controllable activation can be realized thanks to intracellular stimuli.
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7

Jin, Suxing, Yan Guo, Zijian Guo, and Xiaoyong Wang. "Monofunctional Platinum(II) Anticancer Agents." Pharmaceuticals 14, no. 2 (February 7, 2021): 133. http://dx.doi.org/10.3390/ph14020133.

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Platinum-based anticancer drugs represented by cisplatin play important roles in the treatment of various solid tumors. However, their applications are largely compromised by drug resistance and side effects. Much effort has been made to circumvent the drug resistance and general toxicity of these drugs. Among multifarious designs, monofunctional platinum(II) complexes with a general formula of [Pt(3A)Cl]+ (A: Ammonia or amine) stand out as a class of “non-traditional” anticancer agents hopeful to overcome the defects of current platinum drugs. This review aims to summarize the development of monofunctional platinum(II) complexes in recent years. They are classified into four categories: fluorescent complexes, photoactive complexes, targeted complexes, and miscellaneous complexes. The intention behind the designs is either to visualize the cellular distribution, or to reduce the side effects, or to improve the tumor selectivity, or inhibit the cancer cells through non-DNA targets. The information provided by this review may inspire researchers to conceive more innovative complexes with potent efficacy to shake off the drawbacks of platinum anticancer drugs.
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8

Stadnichenko, Raisa, Brian T. Sterenberg, Arlene M. Bradford, Michael C. Jennings, and Richard J. Puddephatt. "Platinum–thallium cluster complexes." Journal of the Chemical Society, Dalton Transactions, no. 6 (February 13, 2002): 1212–16. http://dx.doi.org/10.1039/b107579a.

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9

Vicente, José, Aurelia Arcas, Jesús M. Fernández-Hernández, Gabriel Aullón, and Delia Bautista. "Acetonyl Platinum(II) Complexes†." Organometallics 26, no. 25 (December 2007): 6155–69. http://dx.doi.org/10.1021/om700665n.

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10

Ramachandran, Ravindranath, and Richard J. Puddephatt. "Platinum hydride cluster complexes." Inorganic Chemistry 32, no. 11 (May 1993): 2256–60. http://dx.doi.org/10.1021/ic00063a010.

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11

Xia, Aibing, and Paul R. Sharp. "Platinum(II) Hydrazido Complexes." Inorganic Chemistry 40, no. 16 (July 2001): 4016–21. http://dx.doi.org/10.1021/ic001432d.

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12

Kelland, Lloyd R. "New platinum antitumor complexes." Critical Reviews in Oncology/Hematology 15, no. 3 (December 1993): 191–219. http://dx.doi.org/10.1016/1040-8428(93)90042-3.

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13

Elferink, F., O. R. Leeuwenkamp, H. M. Pinedo, and W. J. F. Van Der Vijgh. "Electrochemistry of platinum complexes." Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 238, no. 1-2 (December 1987): 297–313. http://dx.doi.org/10.1016/0022-0728(87)85181-1.

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14

Salishcheva, Olesya, and Alexander Prosekov. "Antimicrobial activity of mono- and polynuclear platinum and palladium complexes." Foods and Raw Materials 8, no. 2 (September 30, 2020): 298–311. http://dx.doi.org/10.21603/2308-4057-2020-2-298-311.

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Introduction. Infectious diseases remain a serious threat to humanity worldwide as bacterial pathogens grow more diverse. Bacteria, fungi, and parasites develop resistance to clinically approved antimicrobials, which reduces the efficacy of available drugs and treatment measures. As a result, there is an ever growing demand for new highly effective pharmaceuticals. This review describes mono- and polynuclear platinum and palladium complexes with antimicrobial properties. We compared several groups of antibacterial agents: antibiotics, antioxidant biologically active substances, antimicrobial nanoparticles, nanocomposite materials, biopolymers, micellar systems, and plant extracts. Study objects and methods. The review covered relevant articles published in Web of Science, Scopus, and Russian Science Citation Index for the last decade. The list of descriptors included such terms as mononuclear and binuclear complexes of platinum, palladium, and antimicrobial activity. Results and discussion. Chelates of platinum, palladium, silver, iridium, rhodium, ruthenium, cobalt, and nickel are popular therapeutic agents. Their antimicrobial activity against pathogenic microorganisms can be enhanced by increasing their bioavailability. Metalbased drugs facilitate the transport of organic ligands towards the bacterial cell. The nature of the ligand and its coordination change the thermodynamic stability, kinetic lability, and lipophilic properties of the complex, as well as the reactivity of the central atom. Polynuclear platinum and palladium complexes contain two or more bound metal (coordinate) centers. Covalent bonding with bacterial DNA enables them to form a type of DNA adducts, which is completely different from that of mononuclear complexes. Conclusion. Metal-based drugs with functional monodentate ligands exhibit a greater antimicrobial effect compared to free ligands. Poly- and heteronuclear complexes can increase the number of active centers that block the action of bacterial cells. When combined with other antibacterial agents, they provide a synergistic effect, which makes them a promising subject of further research.
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15

Kessler, Florian, Evelyn Wuttke, Daniela Lehr, Yan Wang, Bernhard Weibert, and Helmut Fischer. "Platinum allenylidene complexes and formation of platinum and palladium acetonitrile alkynyl complexes." Inorganica Chimica Acta 374, no. 1 (August 2011): 278–87. http://dx.doi.org/10.1016/j.ica.2011.02.074.

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16

Roat, Rosette M., Maria J. Jerardi, Catherine B. Kopay, Danica C. Heath, Jessica A. Clark, Jessa A. DeMars, John M. Weaver, Ernst Bezemer, and Jan Reedijk. "Platinum(II) complexes catalyze reactions between platinum(IV) complexes and 9-methylxanthine‡." Journal of the Chemical Society, Dalton Transactions, no. 19 (1997): 3615–21. http://dx.doi.org/10.1039/a703749j.

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17

Stang, Peter J., and Jeffery A. Whiteford. "Mixed, Neutral-Charged, Platinum-Platinum and Platinum-Palladium Macrocyclic Tetranuclear Complexes." Organometallics 13, no. 10 (October 1994): 3776–77. http://dx.doi.org/10.1021/om00022a010.

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18

Zhang, Kaka, Margaret Ching-Lam Yeung, Sammual Yu-Lut Leung, and Vivian Wing-Wah Yam. "Living supramolecular polymerization achieved by collaborative assembly of platinum(II) complexes and block copolymers." Proceedings of the National Academy of Sciences 114, no. 45 (October 23, 2017): 11844–49. http://dx.doi.org/10.1073/pnas.1712827114.

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An important feature of biological systems to achieve complexity and precision is the involvement of multiple components where each component plays its own role and collaborates with other components. Mimicking this, we report living supramolecular polymerization achieved by collaborative assembly of two structurally dissimilar components, that is, platinum(II) complexes and poly(ethylene glycol)-b-poly(acrylic acid) (PEG-b-PAA). The PAA blocks neutralize the charges of the platinum(II) complexes, with the noncovalent metal–metal and π–π interactions directing the longitudinal growth of the platinum(II) complexes into 1D crystalline nanostructures, and the PEG blocks inhibiting the transverse growth of the platinum(II) complexes and providing the whole system with excellent solubility. The ends of the 1D crystalline nanostructures have been found to be active during the assembly and remain active after the assembly. One-dimensional segmented nanostructures with heterojunctions have been produced by sequential growth of two types of platinum(II) complexes. The PAA blocks act as adapters at the heterojunctions for lattice matching between chemically and crystallographically different platinum(II) complexes, achieving heterojunctions with a lattice mismatch as large as 21%.
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19

Bissinger, Herbert, and Wolfgang Beck. "Metallkomplexe mit biologisch wichtigen Liganden, XXXIX [1]. Platin(IV)-Komplexe mit α-Aminosäure-und Peptidestern; 15N-und 195Pt-NMR-Spektren von α-Aminosäuren-Platin-Komplexen / Metal Complexes with Biologically Important Ligands, XXXIX [1]. Platinum(IV) Complexes with α-Amino Acid Esters and Peptide Esters; 13N and 195Pt NMR Spectra of Platinum Complexes with α-Amino Acids." Zeitschrift für Naturforschung B 40, no. 4 (April 1, 1985): 507–11. http://dx.doi.org/10.1515/znb-1985-0412.

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The platinum(IV) complexes PtX4L2 (X = Cl, Br; 2 X = oxalate; L = glyOEt, glyglyOEt, gly-cleuOEt; 2 L = metOEt) have been obtained by oxidative addition of halogenes to platinum(II) compounds PtX2L2. A high field shift of δ15N ( ∼ 50 ppm) is observed for the coordinated amino acid ligand of various platinum complexes, compared to the free ligand. Platinum(II) and platinum(IV) can be distinguished by their 195Pt NMR signals.
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20

Hughes, Russell P., Antony J. Ward, Arnold L. Rheingold, and Lev N. Zakharov. "Synthesis and molecular structures of platinum(II) and platinum(IV) diimine complexes possessing fluoroalkyl ligands." Canadian Journal of Chemistry 81, no. 11 (November 1, 2003): 1270–79. http://dx.doi.org/10.1139/v03-117.

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A range of Pt-diimine complexes possessing fluoroalkyl and hydrofluoroalkyl ligands were synthesized from the readily prepared [Pt(diimine)Me2] complexes and the appropriate iodofluoroalkane. For complexes with diimine ligands containing substituents in the 2,6-positions of the aryl group, Pt(II) complexes were obtained due to in situ reductive elimination of MeI, while for complexes with diimine ligands of smaller steric demands (possessing substituents in the 3,5-positions or the 4-position), Pt(IV) complexes were obtained. Attempts to convert the Pt(IV) complexes to the desired Pt(II) species via reductive elimination of MeI, methane, or ethane resulted in either no reaction or degradation of the starting complex. Fluoroalkyl(methyl)platinum(II) complexes were then converted to the fluoroalkyliodoplatinum(II) complexes via addition of I2 or by reaction with aq HI. Several complexes have been characterized crystallographically.Key words: fluoroalkyl, organometallic synthesis, structure, platinum.
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21

Fortuño, Consuelo, Antonio Martín, Piero Mastrorilli, Mario Latronico, Valentina Petrelli, and Stefano Todisco. "Stable mixed-valence diphenylphosphanido bridged platinum(ii)–platinum(iv) complexes." Dalton Transactions 49, no. 15 (2020): 4935–55. http://dx.doi.org/10.1039/d0dt00712a.

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22

Jurisevic, Milena, Gordana Radosavljevic, Aleksandar Arsenijevic, Marija Milovanovic, Nevena Gajovic, Dragana Djordjevic, Jelena Milovanovic, et al. "Platinum Complexes with Edda (Ethylenediamine -N, N - Diacetate) Ligands as Potential Anticancer Agents." Serbian Journal of Experimental and Clinical Research 17, no. 4 (December 1, 2016): 285–96. http://dx.doi.org/10.1515/sjecr-2016-0042.

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Abstract The design of platinum based drugs is not a new field of interest. Platinum complexes are widely used as anticancer agents and currently, approximately 30 platinum(II) and platinum(IV) entered into some of the phases of clinical trials. A special place in today’s research belongs to platinum complexes with diammine ligands. A large number of edda (ethylenediamine- N, N’-diacetate)-type ligands and their corresponding metal complexes has been successfully synthesized. This article summarizes recent progress in research on edda-type-platinum complexes. Some of these agents achieves better effect compared to the gold standard (cisplatin). It has been shown that there is a possible relationship between the length of the ligand ester group carbon chain and its cytotoxic effect. In most cases the longer the ester chain is the greater is the antitumor activity. Of particular interest are the noticeable effects of some new platinum compound with edda-type ligand on cell lines that are known to have a high level of cisplatin-resistance. Exanimate complexes appear to have a different mode of mechanism of action compared with cisplatin which includes apoptotic and necrotic cell death. There are indications that further investigations of these compounds may be very useful in overcoming the problems associated global cancer statistic.
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23

Salishcheva, Olesya, Alyeksandr Prosyekov, and V. Dolganuk. "Antimicrobial Activity of Mononuclear and Bionuclear Nitrite Complexes of Platinum (II) and Platinum (IV)." Food Processing: Techniques and Technology 50, no. 2 (June 27, 2020): 329–42. http://dx.doi.org/10.21603/2074-9414-2020-2-329-342.

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Introduction. Pathogens keep evolving and develop resistance to antimicrobial drugs. As a result, science is constantly searching for new antimicrobial agents. Their complex forms based on organic and inorganic ligands exhibit a stronger synergistic antimicrobial effect, if compared to free ligands. The Scopus database contains 73 thousand scientific articles about antimicrobial activity descriptors published during the last five years. This selection includes ten thousand reviews and three thousand publications that feature the antimicrobial activity of platinum complexes. The research objective was to screen the antimicrobial properties of platinum nitrite complexes. The present paper highlights some of the current domestic and foreign trends in this field of research: the biochemical synthesis of peptides as metabolites of bacteria; the development of anti-biofilm agents that act on the protective systems of pathogens; the creation of antimicrobial nanosystems; the synthesis of antimicrobial surfactants; the synthesis and study of the antimicrobial activity of platinum complexes, etc. The authors also give a brief description of the mechanisms of antibacterial action. Study objects and methods. Five previously synthesized complexes of platinum (II) and platinum (IV), both mononuclear and bionuclear, were tested for antimicrobial activity. The platinum complexes contained terminal and bridged nitrite ligands. The test cultures included Bacillus subtilis and Aspergillus niger. The experiment involved the disk-diffusion method and the macro method of serial dilutions. Results and discussion. All the complexes inhibited the metabolic growth of microorganisms to various degrees. The results depended on the composition and structure of the complex, the number and charge of the coordination centers, the degree of platinum oxidation, and the thermodynamic stability and lability of ligand bonds with the complexing agent. The response to Aspergillus niger proved more pronounced. The Pt+2 nonelectrolyte complex containing both terminal and bridged nitrite ligands was less active than the Pt+2 cationic complex, which contained only bridged NO2– ligands. The highest antibacterial activity belonged to the bionuclear complex of PtIV-PtII [(NH3)2 (NO2)2PtIV(µ-NO2)2PtII(NH3)2](NO3)2 in relation to Bacillus subtilis B4647 and Aspergillus niger. The minimum inhibitory concentration (MIC) was > 125 μmol. Conclusion. The complexing resulted in a synergistic effect between the ligand and the complexing substance. The poly-core complexes contain two or more linked platinum centers that can covalently bind to DNA. They form a completely different type of DNA adducts compared to mononuclear complexes, as well as cross-links between DNA chains with fixation on different parts. The octahedral platinum complexes are kinetic and thermodynamically inert. Unlike similar squamous complexes, they proved to be able to act as prodrugs, recovering inside or outside the bacterial cell. The antimicrobial activity of the mixed-valence PtIV-PtII bionuclear complex [(NH3)2 (NO2)2PtIV(µ-NO2)2PtII(NH3)2](NO3)2 produced inhibitory effect comparable to the existing antimicrobial drugs. A further research will focus on composite mixtures of platinum complexes with other existing antimicrobial agents, as well as on other bacterial strains.
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24

Zhao, Ancong, Wanlin Cai, Xi Yan, Huize Zhang, Jian Wang, and Wei Shen. "Theoretical insights into the effect of ligands on platinum(ii) complexes with a bidentate bis(o-carborane) ligand structure." Photochemical & Photobiological Sciences 18, no. 10 (2019): 2421–29. http://dx.doi.org/10.1039/c9pp00251k.

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25

Wang, Zhimei, Lei Fang, Jian Zhao, and Shaohua Gou. "Insight into the antitumor actions of sterically hindered platinum(ii) complexes by a combination of STD NMR and LCMS techniques." Metallomics 12, no. 3 (2020): 427–34. http://dx.doi.org/10.1039/c9mt00258h.

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26

Barth, Marie-Christin, Norman Häfner, Ingo B. Runnebaum, and Wolfgang Weigand. "Synthesis, Characterization and Biological Investigation of the Platinum(IV) Tolfenamato Prodrug–Resolving Cisplatin-Resistance in Ovarian Carcinoma Cell Lines." International Journal of Molecular Sciences 24, no. 6 (March 16, 2023): 5718. http://dx.doi.org/10.3390/ijms24065718.

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The research on the anticancer potential of platinum(IV) complexes represents one strategy to circumvent the deficits of approved platinum(II) drugs. Regarding the role of inflammation during carcinogenesis, the effects of non-steroidal anti-inflammatory drug (NSAID) ligands on the cytotoxicity of platinum(IV) complexes is of special interest. The synthesis of cisplatin- and oxaliplatin-based platinum(IV) complexes with four different NSAID ligands is presented in this work. Nine platinum(IV) complexes were synthesized and characterized by use of nuclear magnetic resonance (NMR) spectroscopy (1H, 13C, 195Pt, 19F), high-resolution mass spectrometry, and elemental analysis. The cytotoxic activity of eight compounds was evaluated for two isogenic pairs of cisplatin-sensitive and -resistant ovarian carcinoma cell lines. Platinum(IV) fenamato complexes with a cisplatin core showed especially high in vitro cytotoxicity against the tested cell lines. The most promising complex, 7, was further analyzed for its stability in different buffer solutions and behavior in cell cycle and cell death experiments. Compound 7 induces a strong cytostatic effect and cell line-dependent early apoptotic or late necrotic cell death processes. Gene expression analysis suggests that compound 7 acts through a stress-response pathway integrating p21, CHOP, and ATF3.
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27

Śliwa, Wanda, and Małgorzata Deska. "Platinum(II) Complexes of Pyridines. A Review." Collection of Czechoslovak Chemical Communications 64, no. 3 (1999): 435–58. http://dx.doi.org/10.1135/cccc19990435.

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The chemistry of platinum(II) complexes of pyridine and related compounds is reviewed. Also the oxidative addition reaction to platinum(II) complexes of pyridines, as a method of conversion of Pt(II) into Pt(IV) species is described. A review with 90 references.
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28

Maulana, Ilham Maulana Ilham, Peter Loennecke Peter Loennecke, and Evamarie Hey-Hawkins Evamarie Hawkins. "Platinum Metal Complexes of Carbaboranylphophines: Potential Anti Cancer Agents." Indonesian Journal of Cancer Chemoprevention 1, no. 1 (February 28, 2010): 1. http://dx.doi.org/10.14499/indonesianjcanchemoprev1iss1pp1-11.

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Polyhedral heteroboranes in particular dicarba-closo-dodecaboranes(12) and their organic derivatives have been the subject of intense research for over 40 years due to their unique chemical and physical properties. The initial attraction to dicarba-closo-dodecaboranes(12) In the medicinal chemistry research, was a result of their high boron content and stability to catabolism, which are important criteria for cancer therapy, such as BNCT (boron neutron capture therapy) agents. The coordination compounds of the platinum group metals have also received large interest for their potential application as chemotherapeutic agents, since cis-diamminedichloroplatinum(II), cisplatin, has been reported to have capability as tumor inhibitor. Hence, applications can be envisioned for related cis platinum complexes. Complex of cis-rac-[PtCl2{1,2-(PRCl)2C2B10H10}] (R=Ph, tBu, NEt2, NPh2) have been synthesized by employing known carbaborane based phosphine ligands of clorophoshino-closo-dodecaborane , with complex of cis-[PtCl2(COD)] (COD = 1,5-cyclooctadiene) in an N2-atmosphere. The obtained complexes possess expected structure configuration, namely cis-rac. The characterization of the complex has been carried out using 1H, 31P, 13C and 11B-NMR (Nuclear Magnetic Resonance), X-ray of single crystals, elemental analysis, IR (infra red) and mass spectroscopy (MS). The 31P{1H} NMR spectra of all the platinum complexes distinctly show the typical platinum satellites which are attributed to 31P-195Pt-coupling, in which the 31P{1H} NMR spectrum exhibits three lines with an intensity ratio of ca.1:4:1. The structure of the platinum complexes consists of a slightly distorted square-planar coordination sphere, in which the platinum atom is bonded to two chlorides and two phosphorus atoms of the chelating carbaboranylphosphine. Thus the platinum atoms exhibit the coordination number four, which is preferred in platinum(II) complexes.Keywords: Platinum complexes, phosphine ligand, carbaborane
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29

Newman, Christopher P., Gareth W. V. Cave, Michael Wong, William Errington, Nathaniel W. Alcock, and Jonathan P. Rourke. "Di-metallated platinum carbonyl complexes: platinum–platinum interactions in the solid state." Journal of the Chemical Society, Dalton Transactions, no. 18 (2001): 2678–82. http://dx.doi.org/10.1039/b105073g.

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30

Edwards, Gavin L., David St C. Black, Glen B. Deacon, and Laurence PG Wakelin. "In vitro and in vivo studies of neutral cyclometallated complexes against murine leukæmias." Canadian Journal of Chemistry 83, no. 6-7 (June 1, 2005): 980–89. http://dx.doi.org/10.1139/v05-109.

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Cyclometallated µ-halogeno dimers derived from nitrogen donor ligands (1-phenylpyrazoles, 2-phenylpyridine, and 1-(2′-pyridyl)indole) were treated with unidentate nitrogen and phosphorus donor ligands to give a series of neutral monomeric palladium(II) and platinum(II) complexes. An initial prescreen of the complexes against the mouse lymphoid leukæmia cell line L1210 indicated that the complexes exhibited growth inhibitory activity over a relatively wide concentration range. Two factors that gave rise to increased activity were steric hindrance about the metal centre resulting from hindered ligands such as 2,6-dimethylpyridine, or the presence of a phosphorus donor ligand. Little correlation between palladium and platinum complexes was noted. Four complexes were selected for further in vivo study and, while none of the palladium complexes showed more than marginal activity against P388 leukæmia at doses below toxic levels, one platinum complex with a hindered metal centre did display significant antitumour activity against this model.Key words: cyclometallation, palladium, platinum, cytotoxicity, anticancer.
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31

Reinartz, Stefan, Maurice Brookhart, and Joseph L. Templeton. "Platinum(II) and Platinum(IV) Acyl and Formyl Complexes." Organometallics 21, no. 2 (January 2002): 247–49. http://dx.doi.org/10.1021/om010772j.

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32

Bontchev, P. R., M. Mitewa, and Galina Gentcheva. "New platinum(II) and platinum(III) complexes of creatinine." Pure and Applied Chemistry 61, no. 5 (January 1, 1989): 897–902. http://dx.doi.org/10.1351/pac198961050897.

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33

Kostova, Irena. "Platinum Complexes as Anticancer Agents." Recent Patents on Anti-Cancer Drug Discovery 1, no. 1 (January 1, 2006): 1–22. http://dx.doi.org/10.2174/157489206775246458.

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34

Lee, G. H. "Platinum Complexes of 1,4,7-Trithiacyclodecane." Acta Crystallographica Section C Crystal Structure Communications 54, no. 7 (July 15, 1998): 906–9. http://dx.doi.org/10.1107/s0108270197014509.

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Onoa, G. B., and V. Moreno. "Palladium and platinum famotidine complexes." Journal of Inorganic Biochemistry 72, no. 3-4 (December 1998): 141–53. http://dx.doi.org/10.1016/s0162-0134(98)10074-0.

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Kutlu, Emine, Fatih Mehmet Emen, Görkem Kısmalı, Derya Kılıç, and Ruken Esra Demirdoğen. "Novel pyridine-derived platinum complexes." Journal of Thermal Analysis and Calorimetry 138, no. 1 (April 26, 2019): 297–307. http://dx.doi.org/10.1007/s10973-019-08242-4.

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Anastassopoulou, J., P. K. Ganguli, and T. Theophanides. "Green—blue platinum—urea complexes." Inorganica Chimica Acta 159, no. 2 (May 1989): 237–41. http://dx.doi.org/10.1016/s0020-1693(00)80573-3.

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Kelly, Paul F., Alexandra M. Z. Slawin, David J. Williams, and J. Derek Woollins. "Organometallic platinum sulphur nitrogen complexes." Polyhedron 7, no. 19-20 (January 1988): 1925–30. http://dx.doi.org/10.1016/s0277-5387(00)80706-8.

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Tan, Runyu, and Datong Song. "Platinum Complexes of η2-Thiophenes." Inorganic Chemistry 49, no. 5 (March 2010): 2026–28. http://dx.doi.org/10.1021/ic902289h.

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Souchard, Jean Pierre, Tam T. B. Ha, S. Cros, and Neil P. Johnson. "Hydrophobicity parameters for platinum complexes." Journal of Medicinal Chemistry 34, no. 2 (February 1991): 863–64. http://dx.doi.org/10.1021/jm00106a056.

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Farrell, Nicholas, Tam T. B. Ha, Jean Pierre Souchard, Franz L. Wimmer, Suzy Cros, and Neil P. Johnson. "Cytostatic trans-platinum(II) complexes." Journal of Medicinal Chemistry 32, no. 10 (October 1989): 2240–41. http://dx.doi.org/10.1021/jm00130a002.

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Shvydkiy, Nikita V., and Dmitry S. Perekalin. "Cyclobutadiene complexes of platinum metals." Coordination Chemistry Reviews 349 (October 2017): 156–68. http://dx.doi.org/10.1016/j.ccr.2017.08.021.

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Rumyantseva, V. D., L. I. Konovalenko, E. A. Nagaeva, and A. F. Mironov. "Formylation of porphyrin platinum complexes." Russian Journal of Bioorganic Chemistry 31, no. 1 (January 2005): 94–98. http://dx.doi.org/10.1007/s11171-005-0013-9.

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KIDANI, YOSHINORI. "Development of Antitumor Platinum Complexes." YAKUGAKU ZASSHI 105, no. 10 (1985): 909–25. http://dx.doi.org/10.1248/yakushi1947.105.10_909.

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Gomes-Carneiro, Tania M., Richard D. Jackson, Joanne H. Downing, A. Guy Orpen, and Paul G. Pringle. "Halocarbon complexes of platinum(II)." Journal of the Chemical Society, Chemical Communications, no. 5 (1991): 317. http://dx.doi.org/10.1039/c39910000317.

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Yeung, Charles See, Lei Vincent Liu, and Yan Alexander Wang. "Novel Nanotube-Coordinated Platinum Complexes." Journal of Computational and Theoretical Nanoscience 4, no. 6 (September 1, 2007): 1108–19. http://dx.doi.org/10.1166/jctn.2007.2386.

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Hallam, Malcolm F., Michael A. Luke, D. Michael P. Mingos, and Ian D. Williams. "Chemistry of platinum-sulphido complexes." Journal of Organometallic Chemistry 325, no. 1-2 (May 1987): 271–83. http://dx.doi.org/10.1016/0022-328x(87)80407-2.

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Jain, Avijita, Monte L. Helm, John C. Linehan, Daniel L. DuBois, and Wendy J. Shaw. "Biologically inspired phosphino platinum complexes." Inorganic Chemistry Communications 22 (August 2012): 65–67. http://dx.doi.org/10.1016/j.inoche.2012.04.039.

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Taullaj, Fioralba, David Armstrong, Shaishav Datta, Alan J. Lough, and Ulrich Fekl. "2-Adamantyl Complexes of Platinum." European Journal of Inorganic Chemistry 2019, no. 9 (January 30, 2019): 1288–91. http://dx.doi.org/10.1002/ejic.201900019.

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KUKUSHKIN, YU N. "ChemInform Abstract: Platinum Nitrile Complexes." ChemInform 29, no. 31 (June 20, 2010): no. http://dx.doi.org/10.1002/chin.199831284.

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