Download or read book Synthesis and Characterization of Cyclometalated Ruthenium II Complexes and Assessment of Their Potential as Pharmaceuticals written by Leslie Ann Morales and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cyclometalated Ruthenium (II) and RAPTA species were synthesized, characterized and evaluated on their photophysical properties and potential as anti-cancer agents. The binding affinity to yeast RNA of one of the newly synthesized compounds containing a thiophene group (LM5400) was compared to its literature precursor (Compound B) containing a phenyl group under gel electrophoresis. Results indicated that the bands of compounds; Compound A, LM3000, Compound B and LM5400 when incubated with yeast RNA, were similar to the control with the expectation of the band of LM5400 being more faint relative to the rest whenever samples were incubated for 24hrs. Photophysical experiments on cyclometalated ruthenium (II) compounds (CompoundA, LM3000, Compound B, LM5400) indicated that these compounds have an absorbance around 360 nm respectively but do not fluoresce due to extremely low emission values. Four hydrolysis studies were done on the cyclometalated ruthenium (II) species under various conditions and monitored via UV/Vis and H-NMR. Underall conditions, the absorbance and the NMR data the complexes with the j6-benzene ring (Compound A and LM3000) changed under aqueous and chloride solutions. In contrast, the absorbance of the complexes with the j6-cymene rings (Compound B and LM5400) only changed upon increased concentration. All compounds synthesized were characterized by NMR. Crystal structures were obtained for newly synthesized compounds, LM3000 and LM5400.
Download or read book Synthesis and Characterization of Cyclometalated Ruthenium II Complexes for Applications in Photoactivated Cancer Therapy written by Julia A. McCain and published by . This book was released on 2016 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Hybrid Drugs Based on Ruthenium Complex Moiety and Biologically Active Organic Compounds written by Michał Pawel Łomzik and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main goal of this thesis was synthesis and preliminary characterization of novel ruthenium(II) polypyridyl complexes bearing biologically active molecules as potential theranostic agents. Luminescence for the diagnostic applications, and cytotoxicity for the anticancer, therapeutic applications are considered as the theranostic properties. Four new ligands containing biologically active moieties - 5-(4-4'-methyl-[2,2'-bipyridine]-4-ylbut-1-yn-1-yl)pyridine-2-carbaldehyde semicarbazone (L1), 3-(5-4'-methyl-[2,2'-bipyridine]-4-ylpentyl)imidazolidine-2,4-dione (L2), 5,5-dimethyl-3-(5-4'-methyl-[2,2'-bipyridine]-4-ylpentyl)imidazolidine-2,4-dione (L3) and [1-(5-4'-methyl-[2,2'-bipyridine]-4-ylpentyl)-2,5-dioxoimidazolidin-4-yl]urea (L4) were synthesized and characterized. The ligands were used to obtain nine novel ruthenium(II) polypyridyl complexes. Six complexes were synthesized with ligand L1 ([Ru(bpy)2(L1)]2+, [Ru(Mebpy)2(L1)]2+, [Ru(tBubpy)2(L1)]2+, [Ru(Phbpy)2(L1)]2+, [Ru(dip)2(L1)]2+, [Ru(SO3dip)2(L1)]2-) and three with ligands L2, L3 and L4 ([Ru(bpy)2(L2)]2+, [Ru(bpy)2(L3)]2+, [Ru(bpy)2(L4)]2+) (bpy = 2,2'-bipyridine, Mebpy = 4,4'-dimethyl-2,2-bipyridine, tBubpy = 4,4'-tert-butyl-2,2'-bipyridine, Phbpy = 4,4'-diphenyl-2,2-bipyridine, dip = 4,7-diphenyl-1,10-phenantroline and SO3dip = 4,7-di-(4-sulfonatophenyl)-1,10-phenantroline). The spectroscopic and photophysical properties of those complexes were determined. The presence of ligands L1-L4 in the structure of the complex decreased luminescence quantum yield and luminescence lifetime in comparison with unmodified [Ru(bpy)3]2+ complex. The theoretical calculations have shown that ligands L1-L4 do not have influence on ruthenium core geometry. However, they increased the energy of the HOMO that resulted in a shorter band gap. The simulated electronic absorption spectra were in a good agreement with the experimental data. The interactions between the studied ruthenium complexes and human serum albumin (HSA) were investigated. All studied Ru(II) complexes exhibited strong affinity to HSA with the association constant 105 M-1s-1, which suggests formation of Ru complex-HSA adducts. It was also determined that ruthenium complexes most likely bind to the hydrophobic pocket of protein, located in Sudlow's site I in the subdomain II A. Preliminary cytotoxicity evaluation for the studied ruthenium complexes showed their cytotoxic activity towards cancer cell lines. Those results, together with good luminescence properties of the studied ruthenium complexes (luminescence lifetimes and luminescence quantum yield) make them interesting candidates for potential theranostic applications.
Download or read book Ruthenium Chemistry written by Ajay Kumar Mishra and published by CRC Press. This book was released on 2018-01-17 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will describe Ruthenium complexes as chemotherapeutic agent specifically at tumor site. It has been the most challenging task in the area of cancer therapy. Nanoparticles are now emerging as the most effective alternative to traditional chemotherapeutic approach. Nanoparticles have been shown to be useful in this respect. However, in view of organ system complicacies, instead of using nanoparticles as a delivery tool, it will be more appropriate to synthesize a drug of nanoparticle size that can use blood transport mechanism to reach the tumor site and regress cancer. Due to less toxicity and effective bio-distribution, ruthenium (Ru) complexes are of much current interest. Additionally, lumiscent Ru-complexes can be synthesized in nanoparticle size and can be directly traced at tissue level. The book will contain the synthesis, characterization, and applications of various Ruthenium complexes as chemotherapeutic agents. The book will also cover the introduction to chemotherapy, classification of Ru- complexes with respect to their oxidation states and geometry, Ruthenium complexes of nano size: shape and binding- selectivity, binding of ruthenium complexes with DNA, DNA cleavage studies and cytotoxicity. The present book will be more beneficial to researchers, scientists and biomedical. Current book will empower specially to younger generation to create a new world of ruthenium chemistry in material science as well as in medicines. This book will be also beneficial to national/international research laboratories, and academia with interest in the area of coordination chemistry more especially to the Ruthenium compounds and its applications.
Download or read book Ruthenium II Polypyridyl Complexes as Potential Anticancer Drugs written by Yanling Chen and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on biological activities of ruthenium polypyridyl complexes (RPCs) continues to attract interest as these complexes have shown promising anticancer activity both in vitro and in vivo.1−3 The mononuclear RPC, [(phen)2Ru(tatpp)]2+ (MP) and related dinuclear complex [(phen)2Ru(tatpp)Ru(phen)2]4+ (P) have been shown to both intercalate with DNA and shown potentiated DNA cleavage under anaerobic and reducing conditions4−5, as well as shown good selectivity and cytotoxicity towards malignant cell lines in vitro and tumors in vivo.5 Both complexes contain the redox-active tatpp ligand which is thought to be an essential component for the observed biological activities. This thesis is focused on developing improvements to the stereoselective syntheses of the chiral complexes, [delta][delta]-P and [delta]-MP. It is also investigated the synthesis of a new analogue [(phen)2Ru(tadbp)]2+ (B) and its chiral form [delta]-B which contains a modified tatpp ligand that is only capable of binding one Ru ion. Moreover this thesis explores the ability of these large complexes to traverse the cell membranes and get into cells and cell nuclei by isolating treated cells and nuclei and determining their ruthenium content by graphite furnace atomic absorption method (GFAAS). The GFAAS data show that the two examined complexes [delta][delta]-P and [delta]-MP are able to quickly penetrate into cancer cells (H-358) and concentrate in nuclei, which is postulated due to their high binding affinity to DNA.
Download or read book Syntheses Characterization and Preliminary Evaluation of Potential Ruthenium Anticancer Complexes Containing Schiff Base Ligands written by Stephen Mensah and published by . This book was released on 2019 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Platinum-based drugs have over the years been administered in the treatment of tumours.Unfortunately, platinum resistance and the severe side effects associated with the treatments has necessitated the research for new anti-cancer drugs. Ruthenium(II) and Ruthenium(III) complexes have shown promise as useful alternative anticancer agents. The lead candidates include the Ru(II) complex RAPTA-C, a ruthenium(II)-arene complex [Ru(Îʺ6-p-cymene)Cl2(1,3,5-triaza-7-phosphaadamantane)] and the Ru(III) complex NAMI-A [imidazoleH][trans-Ru(imidazole) (dimethyl sulfoxide)Cl4]. Both compounds have shown potent cytotoxic activity in several primary human tumor models. Unfortunately, NAMI-A could not advance in clinical evaluations due to limited efficacy in vivo, while the clinical evaluation of RAPTA-C is unknown. Therefore, there is a need for novel cancer therapeutics that have high biological activity, are relatively easy to synthesize, and can readily be modified. This work focuses on the use of 2-acetylpyridine and 2-pyridinecarboxaldehyde for the synthesis, characterization, and preliminary evaluation of derivatives of both the RAPTA-C and NAMI-A anticancer complexes containing Schiff base ligands. Here, the results of the synthesis of these compounds and their subsequent characterization using 1H NMR, MS, fluorescence and UV-Vis spectroscopies are presented.
Download or read book Synthesis and characterization of hetero multinuclear ruthenium platinum complexes and assessment of their potential as anticancer agents written by Isabelle Taylor and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Ruthenium II hispolon Complexes written by Carmen Kloer and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Synthesis and Characterization of Octahedral Ruthenium II Complexes with Trans Spanning Diphosphine Ligands written by Willie J. Perez and published by . This book was released on 1995 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Metallodrugs written by Shahid Ul-Islam and published by John Wiley & Sons. This book was released on 2020-07-08 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is organized into 12 important chapters that focus on the progress made by metal-based drugs as anticancer, antibacterial, antiviral, anti-inflammatory, and anti-neurodegenerative agents, as well as highlights the application areas of newly discovered metallodrugs. It can prove beneficial for researchers, investigators and scientists whose work involves inorganic and coordination chemistry, medical science, pharmacy, biotechnology and biomedical engineering.
Download or read book Synthesis and Characterization of Ruthenium II Complexes with Polypyridyl Ligands written by Sheau Yong Lau and published by . This book was released on 2007 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of New Ruthenium 2 Compounds with Potential Anticancer Activity written by Barbara Serli and published by . This book was released on 2004 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Ruthenium II Polypyridyl Complexes written by Youxiang Wang and published by . This book was released on 1994 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and characterization of multinuclear iron ruthenium complexes with potential anti metastatic properties written by Eber Wright and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organotransition Metal Chemistry From Bonding to Catalysis written by John F. Hartwig and published by . This book was released on 2010-02-10 with total page 1172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on Collman et al.'s best-selling classic book, Principles and Applications of Organotransition Metal Chemistry, Hartwig's text consists of new or thoroughly updated and restructured chapters and provides an in-depth view into mechanism, reaction scope, and applications. It covers the most important developments in the field over the last twenty years with great clarity with a selective, but thorough and authoritative coverage of the fundamentals of organometallic chemistry, the elementary reactions of these complexes, and many catalytic processes occurring through organometallic intermediates, making this the Organotransition Metal Chemistry text for a new generation of scientists.
Download or read book Inorganic Chemical Biology written by Gilles Gasser and published by John Wiley & Sons. This book was released on 2014-06-23 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding, identifying and influencing the biological systems are the primary objectives of chemical biology. From this perspective, metal complexes have always been of great assistance to chemical biologists, for example, in structural identification and purification of essential biomolecules, for visualizing cellular organelles or to inhibit specific enzymes. This inorganic side of chemical biology, which continues to receive considerable attention, is referred to as inorganic chemical biology. Inorganic Chemical Biology: Principles, Techniques and Applications provides a comprehensive overview of the current and emerging role of metal complexes in chemical biology. Throughout all of the chapters there is a strong emphasis on fundamental theoretical chemistry and experiments that have been carried out in living cells or organisms. Outlooks for the future applications of metal complexes in chemical biology are also discussed. Topics covered include: • Metal complexes as tools for structural biology • IMAC, AAS, XRF and MS as detection techniques for metals in chemical biology • Cell and organism imaging and probing DNA using metal and metal carbonyl complexes • Detection of metal ions, anions and small molecules using metal complexes • Photo-release of metal ions in living cells • Metal complexes as enzyme inhibitors and catalysts in living cells Written by a team of international experts, Inorganic Chemical Biology: Principles, Techniques and Applications is a must-have for bioinorganic, bioorganometallic and medicinal chemists as well as chemical biologists working in both academia and industry.
Download or read book Basic Concepts Viewed from Frontier in Inorganic Coordination Chemistry written by Takashiro Akitsu and published by BoD – Books on Demand. This book was released on 2018-12-19 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is both a review of current research and an undergraduate textbook for inorganic chemistry at university level. In university undergraduate lectures, basic concepts are mainly explained and added examples of frontier research are optional. However, in many cases, frontier research is more interesting for students than basic studies. This book is aimed at undergraduates in inorganic chemistry. Each author introduces or reviews "frontier research topics" of inorganic coordination chemistry. Additionally, "basic concepts," as found in textbooks on this subject, indicate application examples of "frontier research topics."
