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Total Synthesis Of The Synoxazolidinone Family Of Natural Products And Novel Approaches For The Construction Of Nitrogen And Oxygen Containing Heterocycles
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Book Synopsis Total Synthesis of the Synoxazolidinone Family of Natural Products and Novel Approaches for the Construction of Nitrogen and Oxygen Containing Heterocycles by : Nataliia Vasylivna Shymanska
Download or read book Total Synthesis of the Synoxazolidinone Family of Natural Products and Novel Approaches for the Construction of Nitrogen and Oxygen Containing Heterocycles written by Nataliia Vasylivna Shymanska and published by . This book was released on 2016 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Methods for the Synthesis of Oxygen and Nitrogen Containing Heterocycles by : Matthew Paul Brichacek
Download or read book New Methods for the Synthesis of Oxygen and Nitrogen Containing Heterocycles written by Matthew Paul Brichacek and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A single synthetic method rarely is sufficient to provide universal access to a chemical structure class. This realization forces organic chemists to devise and develop new methods. The copper catalyzed ring expansion of vinylaziridines produces nitrogen containing heterocycles commonly found in pharmaceuticals and natural products. This reaction is described from its initial discovery, through optimization, to application. Many substitution patterns and functional groups were tested and the reaction was found to be quite tolerant. By controlling the aziridine and olefin stereochemistry the selective synthesis of either cis or trans 2,5dihydropyrroles was achieved. Likewise, vinyloxiranes were stereoselectively converted to cis- or trans-2,5-dihydrofurans. Furthermore, the asymmetric synthesis of 2-substituted-2,5-dihydrofurans was achieved using chirality transfer characteristic of a [1,3]- sigmatropic rearrangement. This method was further tested by completing the total synthesis of natural products goniothalesdiol and varitriol.
Author :Ghotas Evindar Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612917040 Total Pages :1174 pages Book Rating :4.9/5 (17 download)
Book Synopsis Novel Approaches to Synthesis of Nitrogen Containing Heterocycles [microform] by : Ghotas Evindar
Download or read book Novel Approaches to Synthesis of Nitrogen Containing Heterocycles [microform] written by Ghotas Evindar and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2004 with total page 1174 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Chapter one, a modified approach for mercury promoted synthesis of mono-, di- and tri-substituted 5-aminotetrazoles, and 5-oxo-tetrazoles is reported. This mild protocol is applied to one pot synthesis of a number of amino acid tert-butyl ester- and peptide tert-butyl ester-tetrazole conjugates. It allows for incorporation of a tetrazole moiety into peptide structures. Finally, a solid phase synthetic protocol to incorporate tetrazole heterocycles at the N-terminus of a peptide, using HgCl2, DIC, or Mukaiyama's reagents was achieved. Chapter three describes the synthesis of 2-aminobenzimidazoles via intramolecular C-N bond formation between an aryl halide and a guanidine moiety using either copper or palladium catalysis. Inexpensive copper salts, such as CuI, are generally superior to the use of palladium catalysts. Regioselective cyclizations can also be achieved in high yield under CuI/1,10-phenanthroline catalyzed conditions, whereas palladium catalysis results in the formation of regioisomeric products. Copper- and palladium-catalyzed intramolecular C-S bond formation by cross-coupling between an aryl halide and thiourea functionality is also demonstrated for the synthesis of 2-aminobenzothiazoles. The copper-catalyzed reaction further expands the recent studies exploring the utility of copper salts as replacements for palladium in carbon-heteroatom bond forming reactions. This methodology is applied to the synthesis of the histamine H1-receptor antagonist astemizole (Hismanal) and its highly active metabolite norastemizole. This work is the first serious study of metal catalyzed arylation of guanidines, and is one of a handful of examples of copper catalyzed cyclizations involving C-N bond formation. Chapter two describes a modified Edman degradation procedure to provide an effective means of introducing a heterocycle at the N-terminus of an amino acid amide or peptide. Reaction of a peptide with an isothiocyanate, followed by dehydrothiolative trapping of the intermediate thiourea by intramolecular cyclization of the weakly nucleophilic adjacent amide nitrogen, generates an iminohydantoin. Solution-phase parallel synthesis of iminohydantoins and polymer-supported synthesis of dipeptide and tripeptide derived iminohydantoins were also achieved. Chapter four describes the formation of various benzoxazoles and a handful of benzthiazoles via intramolecular C-O cross-coupling between an aryl halide and an amide oxygen/sulfur using a catalytic amount of copper. Investigation of various ligands revealed 1,10-phenanthroline to be a superior ligand in benzoxazole formation. This protocol allowed for aryl, alky, vinyl, and hetero-aromatic substitutions at position 2-oxazole. A number of substitutions on the phenyl ring of benzoxazole were also well tolerated. An intermolecular approach has also been investigated. The developed intramolecular protocol is applied to total synthesis of antitumor agent UK-1 46 and its analog Me-UK-1 47. Also, a new protocol for the formation of substituted aminothiatriazoles from thiocarbamoylimidazolium salts is outlined. Thiocarbamoylimidazolium salts are synthesized from the corresponding amines by treatment with thiocarbonyldiimidazole (TCDI) followed by methylation with iodomethane. Thiocarbamoylimidazolium salts are shown to act as thiocarbamoyl cation equivalents. Substitution of the salts by azide anion followed by electrocyclization affords substituted aminothiatriazoles in good to excellent yields.
Book Synopsis Approaches to the Total Synthesis of Synoxazolidinone C. by : Maxime Villa
Download or read book Approaches to the Total Synthesis of Synoxazolidinone C. written by Maxime Villa and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Landmark Experiments in Molecular Biology by : Michael Fry
Download or read book Landmark Experiments in Molecular Biology written by Michael Fry and published by Academic Press. This book was released on 2016-06-10 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Landmark Experiments in Molecular Biology critically considers breakthrough experiments that have constituted major turning points in the birth and evolution of molecular biology. These experiments laid the foundations to molecular biology by uncovering the major players in the machinery of inheritance and biological information handling such as DNA, RNA, ribosomes, and proteins. Landmark Experiments in Molecular Biology combines an historical survey of the development of ideas, theories, and profiles of leading scientists with detailed scientific and technical analysis. - Includes detailed analysis of classically designed and executed experiments - Incorporates technical and scientific analysis along with historical background for a robust understanding of molecular biology discoveries - Provides critical analysis of the history of molecular biology to inform the future of scientific discovery - Examines the machinery of inheritance and biological information handling
Book Synopsis Flavin-Dependent Enzymes: Mechanisms, Structures and Applications by :
Download or read book Flavin-Dependent Enzymes: Mechanisms, Structures and Applications written by and published by Academic Press. This book was released on 2020-09-21 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Enzymes, Volume 47, highlights new advances in the field, with this new volume presenting interesting chapters on The Multipurpose Family of Oxidases, Vanillyl alcohol oxidase, Choline oxidases, Aryl alcohol oxidase, D- and L-amino acid oxidases, Sugar oxidases, Phenolic Compounds hydroxylases, Baeyer-Villiger Monooxygenases, Flavin-dependent halogenases, Flavin-dependent dehalogenases, Styrene Monooxygenases, Bacterial luciferases, Cellobiose Dehydrogenases, Prenylated flavoenzymes, Ene-reductases, Flavoenzymes in Biocatalysis. - Provides the authority and expertise of leading contributors from an international board of authors - Presents the latest release in The Enzymes series
Book Synopsis Lewis Base Catalysis in Organic Synthesis by : Edwin Vedejs
Download or read book Lewis Base Catalysis in Organic Synthesis written by Edwin Vedejs and published by John Wiley & Sons. This book was released on 2016-08-03 with total page 1488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This three-volume set represents the first comprehensive coverage of the rapidly expanding field of Lewis base catalysis that has attracted enormous attention in recent years. Lewis base catalysis is a conceptually novel paradigm that encompasses an extremely wide variety of preparatively useful transformations and is particularly effective for enantioselectively constructing new stereogenic centers. As electron-pair donors, Lewis bases can influence the rate and stereochemical course of myriad synthetic organic reactions. The book presents the conceptual/mechanistic principles that underlie Lewis base catalysis, and then builds upon that foundation with a thorough presentation of many different reaction types. And last but not least, the editors, Prof. Edwin Vedejs and Prof. Scott E. Denmark, are without doubt the leaders in this emerging field and have compiled high quality contributions from an impressive collection of international experts.
Book Synopsis C-C Bond Activation by : Guangbin Dong
Download or read book C-C Bond Activation written by Guangbin Dong and published by Springer. This book was released on 2014-09-18 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students
Book Synopsis Stereoselective Synthesis by : Gary A. Molander
Download or read book Stereoselective Synthesis written by Gary A. Molander and published by Thieme Chemistry. This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbonyl and imino groups are two of the most integral functional groups employed in organic synthesis. Specific topics discussed: reduction, alkylation, alkenylation, and arylation of these groups, as well as asymmetric aldol, Mannich, and Morita-Bayliss-Hillman reactions. This volume is part of a 3-volume set: Science of Synthesis Stereoselective Synthesis Workbench Edition Further information about Stereoselective Synthesis (including sample pages and the table of contents)
Book Synopsis Algal Toxins in Seafood and Drinking Water by : Ian R. Falconer
Download or read book Algal Toxins in Seafood and Drinking Water written by Ian R. Falconer and published by Academic Press. This book was released on 1993-10-28 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some taxonomic and biologic aspects of toxic dinoflagellates / Karen A. Steidinger -- Methods of analysis for algal toxins: dinoflagellate and diatom toxins / John J. Sullivan -- Mode of action of toxins of seafood poisoning / Daniel G. Baden, Vera L. Trainer -- Paralytic shellfish poisoning / C.Y. Kao -- Diarrhetic shellfish poisoning / Tore Aune, Magne Yndestad -- Ciguatera fish poisoning / Raymond Bagnis -- Control measures in shellfish and finfish industries in the USA / James Hungerford, Marleen Wekell -- Seafood toxins of algal origin and their control in Canada / A.D. Cembella, E. Todd -- Taxonomy of toxic cyanophyceae (Cyanobacteria) / Olav M. Skulberg [and others] -- Measurement of toxins from blue-green algae in water and foodstuffs / Ian R. Falconer -- Mechanism of toxicity of cyclic peptide toxins from blue-green algae / Ian R. Falconer -- Diseases related to freshwater blue-green algal toxins and control measures / Wayne W. Carmichael, Ian R. Falconer.
Book Synopsis Microalgae in Health and Disease Prevention by : Ira A. Levine
Download or read book Microalgae in Health and Disease Prevention written by Ira A. Levine and published by Academic Press. This book was released on 2018-06-29 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microalgae in Health and Disease Prevention is a comprehensive reference that addresses the historical and potential use of microalgae, its extracts, secondary metabolites, and molecular constituents for enhancing human health and preventing diseases. Each chapter features an overview, and the book includes coverage of microalgae biology, harmful algae, the use of microalgae in alcohol and food, and as sources of macronutrients, micronutrients, vitamins, and minerals. The historical use of microalgae, in addition to its potential use as a nutraceutical and cosmeceutical, is also addressed. The book provides coverage of relevant, up-to-date research as assembled by a group of contributors who are dedicated to the advancement of microalgae use in health, diet and nutrition. Discusses research findings on the relationship between microalgal diet, nutrition and human health Presents the medicinal, anti-allergic and psychoactive properties of microalgae Identifies toxic and harmful microalgae Addresses microalgal lipids, proteins and carbohydrates
Book Synopsis Modern Alkaloids by : Ernesto Fattorusso
Download or read book Modern Alkaloids written by Ernesto Fattorusso and published by John Wiley & Sons. This book was released on 2008-01-08 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents all important aspects of modern alkaloid chemistry, making it the only work of its kind to offer up-to-date and comprehensive coverage. While the first part concentrates on the structure and biology of bioactive alkaloids, the second one analyzes new trends in alkaloid isolation and structure elucidation, as well as in alkaloid synthesis and biosynthesis. A must for biochemists, organic, natural products, and medicinal chemists, as well as pharmacologists, pharmaceutists, and those working in the pharmaceutical industry.
Book Synopsis The Chemistry of Heterocycles by : Vishnu Ji Ram
Download or read book The Chemistry of Heterocycles written by Vishnu Ji Ram and published by Elsevier. This book was released on 2019-06-05 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterocycles are ubiquitously present in nature and occupy a unique place in organic chemistry as they are part of the DNA and haemoglobin that make life possible. The Chemistry of Heterocycles covers an introduction to the topic, followed by a chapter on the nomenclature of all classes of isolated, fused and polycyclic heterocycles. The third chapter delineates the highly strained three membered N,O and S containing aromatic and non-aromatic heterocycles with one and more than one similar and dissimilar heteroatom. The four-membered heterocycles are abundantly present in various natural and synthetic products of pharmacological importance. This chapter describes the natural abundance, synthesis, chemical reactivity, structural features and their medicinal importance. This class of compounds are present as sub-structures in penicillin and cytotoxic Taxol. Lastly, a chapter on the natural abundance, synthesis, chemical reactivity and pharmacological importance of 5-membered heterocycles with N,O,S heteroatom is covered. The chemistry of heterocycles with mixed heteroatom such as, N-S, N-O, N-S etc. is also described. - Gives in-depth, clear information about various systems of nomenclature along with widely acceptable IUPAC system for naming various classes of heterocycles - Provides complete information about natural occurrences, synthesis, chemical reactivity, pharmacological importance of heterocycles and their application in material science - Highly relevant for graduate students and researchers, providing updated information about various isolated and fused N,O and,S containing heterocycles
Book Synopsis Comprehensive Heterocyclic Chemistry III by :
Download or read book Comprehensive Heterocyclic Chemistry III written by and published by Elsevier Science. This book was released on 2008-03-27 with total page 12500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Heterocyclic Chemistry III (CHEC-III) is a new 15-volume reference work which provides the first point of entry to the literature for all scientists interested in heterocyclic ring systems. Since publishing in 1984, Comprehensive Heterocyclic Chemistry (CHEC) has become the standard work on the subject, indispensable to all serious readers in the interdisciplinary areas where heterocycles are employed. CHEC-III builds on and complements the material in CHEC and CHEC-II and is designed to be used both alone and in conjunction with these two works. Written by leading scientists who have evaluated and summarized the most important data published over the last decade, Comprehensive Heterocyclic Chemistry III will be an invaluable addition to the reference library of those working with heterocyclic ring systems. Reviews advances in the properties, structure, synthesis, reactivity and applications of the most important heterocyclic ring systems Contains over 250 specialist reviews, logically organized by size and heteroatom content of the heterocyclic ring Saves researchers valuable time and effort through carefully structured critical reviews of the literature by experts
Book Synopsis Lead Generation Approaches in Drug Discovery by : Zoran Rankovic
Download or read book Lead Generation Approaches in Drug Discovery written by Zoran Rankovic and published by John Wiley & Sons. This book was released on 2010-04-07 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: An integrated overview of modern approaches to lead discovery Lead generation is increasingly seen as a distinct and success-determining phase of the drug discovery process. Over recent years, there have been major advances in the understanding of what constitutes a good lead compound and how to improve the chances of finding such a compound. Written by leading scientists and established opinion leaders from industry and academia, this book provides an authoritative overview of the field, as well as the theory, practice, and scope, of the principal Lead Generation Approaches in Drug Discovery, including: The evolution of the lead discovery process, key concepts, current challenges, and future directions Strategies and technologies driving the high-throughput screening (HTS) approach to lead discovery, including the shifting paradigms in the design of compound collections and best practice in the hit confirmation process Knowledge-based in silico or "virtual" screening Theory and practice of the fragment-based approach to lead discovery The opportunities and challenges presented by multi-target drug discovery (MTDD) De novo design of lead compounds and new approaches to estimating the synthetic accessibility of de novo–designed molecules The impact of natural products on drug discovery, and potential of natural product–like compounds for exploring regions of biologically relevant chemical space Using early screening of hits and leads for metabolic, pharmacokinetic, and toxicological liabilities to reduce attrition during the later phases of drug discovery The utility of parallel synthesis and purification in lead discovery With each topic supported by numerous case studies, this is indispensable reading for researchers in industry and academia who wish to keep up to date with the latest strategies and approaches in drug discovery.
Book Synopsis Detecting Pathogens in Food by : Thomas A. McMeekin
Download or read book Detecting Pathogens in Food written by Thomas A. McMeekin and published by Elsevier. This book was released on 2003-06-23 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Identifying pathogens in food quickly and accurately is one of the most important requirements in food processing. The ideal detection method needs to combine such qualities as sensitivity, specificity, speed and suitability for on-line applications. Detecting pathogens in food brings together a distinguished international team of contributors to review the latest techniques in microbiological analysis and how they can best be used to ensure food safety.Part one looks at general issues, beginning with a review of the role of microbiological analysis in food safety management. There are also chapters on the critical issues of what to sample and how samples should be prepared to make analysis effective, as well as how to validate individual detection techniques and assure the quality of analytical laboratories. Part two discusses the range of detection techniques now available, beginning with traditional culture methods. There are chapters on electrical methods, ATP bioluminescence, microscopy techniques and the wide range of immunological methods such as ELISAs. Two chapters look at the exciting developments in genetic techniques, the use of biosensors and applied systematics.Detecting pathogens in food is a standard reference for all those concerned in ensuring the safety of food. - Reviews the latest techniques in microbiological analysis and how they can best be used to ensure food safety - Examines the role of microbiological analysis in food safety management and discusses the range of detection techniques available - Includes chapters on electrical methods, ATP bioluminescence, microscopy techniques and immunological methods such as ELISAs
Book Synopsis Ethnoveterinary Botanical Medicine by : David R. Katerere
Download or read book Ethnoveterinary Botanical Medicine written by David R. Katerere and published by CRC Press. This book was released on 2010-06-23 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the undoubted success of a scientific approach to pharmaceuticals, the last few decades have witnessed a spectacular rise in interest in herbal medicinal products. This general interest has been followed by increasing scientific and commercial attention that led to the coining of the term ethnopharmacology to describe the scientific discipl
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