Download or read book Complexes of the Facial Tricarbonyl Rhenium I and Oxorhenium V Moieties with Aromatic Multidentate N donor Ligands written by Muhammed Bilaal Ismail and published by . This book was released on 2013 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium I III and V Complexes with Potentially Multidentate N O Donor Ligands written by Gratien Habarurema and published by . This book was released on 2013 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium V Complexes with Potentially Bidentate Aromatic N N and N O donor Ligands written by Dunyiswa Mpinda and published by . This book was released on 2000 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Complexes of Oxorhenium V with Terdentate Ligands Containing the ONN Donor atom Set written by Abubak'r Abrahams and published by . This book was released on 1997 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Complexes of Technetium V and Rhenium V with Heterocyclic S N and O N donor Ligands written by Hanelie Janien Kemp and published by . This book was released on 1991 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium V Complexes with Ambidentate N O O O and N N donor Ligands written by Joanne Perils and published by . This book was released on 1999 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium Complexes Based on Triazolyl Derivatives written by Jin-Hui Wang and published by . This book was released on 2017 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhenium complexes play a significant role in nuclear medicine. Rhenium has been widely used as a surrogate of technetium for a long time, and the promising physical features of 186Re and 188Re, make 186/188Re-complexes promising candidates as therapeutic radiopharmaceuticals.Similarly, the interesting photoactive and photoluminescence properties of non-radioactive Re-complexes make them excellent catalysts, luminescent materials and imaging sensors.Thus, in this work, our goal was to (i) develop, using a click chemistry strategy, multidentate ligands for the stabilization of different rhenium cores [Re(CO)3]+ and [ReO]3+ (M = Re or 188Re) as well as the analogous 99mTc-cores in some examples, (ii) assess the potential of the rhenium(technetium) complexes as imaging (natRe or 99mTc) or therapeutic (188Re) agents. To do so, two rhenium(technetium) specific-chelating systems were used: a semi-rigid tripodal system in the second chapter and a pyta moiety in the third chapter, these two chelators being developed previously in our group. Thus, based on a N2O tridentate click ligand, two different studies were carried out in chapter II. In the first one, two synthetic pathways to a range of potentially N3O tetradentate ligands, designed to coordinate rhenium cores as well as their coordination behaviors towards different rhenium cores (oxidation states +I and +V), were investigated. The first radiolabeling results combined with the recent work reported by Dugave and co-workers indicated that this ligand could be a promising 99mTc-chelator for nuclear imaging applications. As perspectives to this work, the extension of the radiolabelling work using the [188ReVO]3+ core should be performed, and the in vitro stability should be tested under physiological conditions in human plasma and by cysteine exchange experiments. The second study was focused on the development of novel hypoxia-selective 99mTc radiopharmaceuticals. Our semi-rigid tripodal click framework was decorated with an appended nitro group (either a nitrobenzyl group or a metronidazole (Mtz) unit). Different positions were considered and at least only two metronidazole (Mtz)-containing ligands and one nitro group-containing ligand as well as their corresponding tricarbonyl rhenium(I) complexes were obtained and characterized, in particular by electrochemistry. The reduction potentials of NO2 group in complexes [Re(CO)3Cl(L2)] and [Re(CO)3(L6)] were similar to those of reported hypoxic imaging agents, prompting us to further investigate other properties of these complexes. Chapter III was focused on the study of AIE (aggregation-induced emission) effect in tricarbonyl Re(I) complexes, the association of this effect with the intrinsic properties of Re(I) complexes being expected to lead to very attractive compounds. To do that, we combined an organic fluorophore (PBO) which exhibits excellent stability and optical properties, with a tricarbonylrhenium(I) complex based on a pyta unit (either a 2-pyridyl-1,2,3-triazole or a 2-pyridyl-1,2,4-triazole ligands). Four compounds were studied. The X-Ray structures revealed spectacular discrepancies between the two first triazole-based complexes ReL8 and ReL9. Moreover, this study being a novel orientation in our group, this work is a great starting point for further investigations. Various organic dyes and/or structural modifications of the organic moiety will soon be considered in order to develop highly emissive rhenium(I) luminescent probes.
Download or read book Complexes of Rhenium V with Bidentate Nitrogen and Oxygen Donor Ligands written by Joanne Perils and published by . This book was released on 1995 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium I and Technetium 99m I Fac tricarbonyl Complexes with 4 imidazolin 2 yl 3 thianutanoic Acid Derivatives as Tridentate Ligands written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium I Carbonyl Complexes with N O donor Ligands syntheses Properties and Cytotoxicity written by Wenwu Wang and published by . This book was released on 2002 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhenium Complexes of Some Nitrogen containing Ligands written by and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 1,2-Dialkylhydrazines are cleaved at the N~ bond on reaction with oxotrichlorobis(triphenylphosphine)rhenium{V) to give alkylimido complexes of the type [Re(NR)C13(PPh3)2J. 1,2-Dibenzylhydrazine reacts anomalously to give a Re(IV) amido complex of the type Retention of the N-N bond occurs on reaction of I ,2-dioC'll::.oy111ydrazinc with oxotrichlorobis(triphenylphosphine)rhenium(V) in benzene-ethanol, and a novel chelated benzoylhydrazido complex is formed. Employment of benzene-acetone as reaction medium permits the isolation of new benzoylhydrazone complexes. The formation of chelate rings containing nitrogen is not restricted m,aroyl hydrazines, and dibenzamidc gives Cl complex analogous to the mown rhenium acetylacetonates. The chelated benzoylhydrazido complexes react rapidly with cyanides, pyridine, phosphines, halogens and carbon monoxide to give rhenium(III) benzoy.lazo complexes, containing the -N=NCOPh group. Prolonged treatment of the benzoylhydrazidc complex with ditertiary and certain monotertiary phosphincs gives a series of new rhenium(I) tctrakis(phosphine)dinitJ'ogcn complexes. The first fluorophosphine and phosphite dinitrogcn complexes have been prepared by this method. The complex [ReCl(N2)(PMe2Ph)4] has also been prepared from dinitr~gen gas by reduction of [RcC13(PMe2Pll)3] under a dinitrogen pressure of 80 atmospheres. 15N2 labelling has been --1 employed to confinn the assignment of strong infrared bands in 1900-2100cm region to v{N=N). Carbon .monoxide reacts with the chelated benzoylhydrazido or benzoy.l.a.co complexes to give bis{carbonyl)dinitrogen complexes. The N=N and C=O stretching vibrations are shown to be st.rongly coupled by 15NZ labelling, infrared bands in the 1900-2100cm- 1 and no assignments of region can be made.The rhenium(l) tetrakis(phosphine)dinitrogen complexes react with halogens and oxidising nletal salts to give the first series of paramagnetic dinitrogen complexes. Transition metal salts such as [MOCl4(Etp)2] react with [ReCl(N2)(P}.fe2Ph)4]to give dinitrogen bridged complexes with abnonnally low N=N stretching frequencies (1680-1850CJlt-1). Treatment of the bis(carbonyl)dinitrogen complexes with mono- and ditertiaryphosphincs provides a facile method for the preparation of rhenium(I) mono- and bis -carbonyl complexes.
Download or read book Chelation Therapy in the Treatment of Metal Intoxication written by Jan Aaseth and published by Academic Press. This book was released on 2016-04-18 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chelation Therapy in the Treatment of Metal Intoxication presents a practical guide to the use of chelation therapy, from its basic chemistry, to available chelating antidotes, and the application of chelating agents. Several metals have long been known to be toxic to humans, and continue to pose great difficulty to treat. These challenges pose particular problems in industrial settings, with lead smelting known to be associated with hemopoietic alterations and paralyses, and the inhalation of mercury vapor in mercury mining being extremely detrimental to the central nervous system. Clinical experience has demonstrated that acute and chronic human intoxications with a range of metals can be treated efficiently by administration of chelating agents. Chelation Therapy in the Treatment of Metal Intoxication describes the chemical and biological principles of chelation in the treatment of these toxic metal compounds, including new chelators such as meso-2,3-dimercaptosuccinic acid (DMSA) and D,L-2,3-dimercapto-1-propanesulfonic acid (DMPS). Presents all the current findings on the potential for chelation as a therapy for metal intoxication Presents practical guidelines for selecting the most appropriate chelating agent Includes coverage on radionuclide exposure and metal storage diseases Describes the chemical and biological principles of chelation in the treatment of toxic metal compounds
Download or read book Organofluorine Compounds in Biology and Medicine written by V Prakash Reddy and published by Newnes. This book was released on 2015-01-25 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organofluorine Compounds in Biology and Medicine covers topics on biochemically relevant organofluorine compounds and their synthesis and biochemical pathways. Organofluorine compounds have renewed interest in pharmaceutical industry, and therefore a concise book on this topic is highly relevant to the scientific community involved in this area. Covers the synthesis, biochemical, and therapeutic applications of organofluorine compounds Offers a complete text on biochemically relevant organofluorine compounds and their synthesis and mechanistic pathways Provides one of the first major reference books on the biological and medicinal applications of organofluorine chemistry
Download or read book The Anomeric Effect written by Eusebio Juaristi and published by CRC Press. This book was released on 1994-10-12 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive review of the structural, conformational, and chemical manifestations of the anomeric effect. In order to present a cogent discussion of this most fundamental and relevant phenomenon, three chapters examine our present understanding of the origin of this conformational effect, based upon a wealth of theoretical and physical data. Equally important, however, are three additional chapters that deal with the general consequences of the stereoelectronic interactions that are associated with the basis of the anomeric effect. The remainder of the book is devoted to new areas of development in the topic-such as differentiation of the endo and exo anomeric interactions, specific analysis of the enthalpic component of anomeric effects, critical evaluation of the kinetics and reverse anomeric effects, discovery of a new substantial effect in second- and lower-row anomeric segments, and others.
Download or read book Inhibitors of the Ras Superfamily G proteins Part A written by and published by Academic Press. This book was released on 2013-09-10 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This special volume of The Enzymes is targeted toward researchers in biochemistry, molecular and cell biology, pharmacology, and cancer. This thematic volume discusses inhibitors of the Ras superfamily G-proteins. Contributions from leading authorities Informs and updates on all the latest developments in the field
Download or read book Inorganic and Organometallic Transition Metal Complexes with Biological Molecules and Living Cells written by Kenneth Kam-Wing Lo and published by Academic Press. This book was released on 2016-12-30 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inorganic and Organometallic Transition Metal Complexes with Biological Molecules and Living Cells provides a complete overview of this important research area that is perfect for both newcomers and expert researchers in the field. Through concise chapters written and edited by esteemed experts, this book brings together a comprehensive treatment of the area previously only available through scattered, lengthy review articles in the literature. Advanced topics of research are covered, with particular focus on recent advances in the biological applications of transition metal complexes, including inorganic medicine, enzyme inhibitors, antiparasital agents, and biological imaging reagents. Geared toward researchers and students who seek an introductory overview of the field, as well as researchers working in advanced areas Focuses on the interactions of inorganic and organometallic transition metal complexes with biological molecules and live cells Foscuses on the fundamentals and their potential therapeutic and diagnostic applications Covers recent biological applications of transition metal complexes, such as anticancer drugs, enzyme inhibitors, bioconjugation agents, chemical biology tools, and bioimaging reagents
Download or read book New Look to Phytomedicine written by Mohd Sajjad Ahmad Khan and published by Academic Press. This book was released on 2018-10-23 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt: New Look to Phytomedicine: Advancements in Herbal Products as Novel Drug Leads is a compilation of in-depth information on the phytopharmaceuticals used in modern medicine for the cure and management of difficult-to-treat and challenging diseases. Readers will find cutting-edge knowledge on the use of plant products with scientific validation, along with updates on advanced herbal medicine in pharmacokinetics and drug delivery. This authoritative book is a comprehensive collection of research based, scientific validations of bioactivities of plant products, such as anti-infective, anti-diabetic, anti-cancer, immune-modulatory and metabolic disorders presented by experts from across the globe. Step-by-step information is presented on chemistry, bioactivity and the functional aspects of biologically active compounds. In addition, the pharmacognosy of plant products with mechanistic descriptions of their actions, including pathogenicity is updated with information on the use of nanotechnology and molecular tools in relation to herbal drug research. Compiles up-to-date information on the chemotherapeutics used in the treatment of infective and metabolic disorders Presents advancements in the discovery of new drugs from plants using molecular and nanotechnology tools Examines detailed information on the use of herbals agents in cancer, HIV and other ailments, including diabetes, malaria and neurological disorders
