Download or read book Biohalogenation written by Saul L. Neidleman and published by Ellis Horwood. This book was released on 1986 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Naturally Occurring Organohalogen Compounds A Comprehensive Update written by Gordon W. Gribble and published by Springer Science & Business Media. This book was released on 2009-12-02 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the long association of organohalogen compounds with human activities, nature is the producer of nearly 5,000 halogen-containing chemicals. Once dismissed as accidents of nature or isolation artifacts, organohalogen compounds represent an important and ever growing class of natural products, in many cases exhibiting exceptional biological activity. Since the last comprehensive review in 1996 (Vol. 68, this series), there have been discovered an additional 2,500 organochlorine, organobromine, and other organohalogen compounds. These natural organohalogens are biosynthesized by bacteria, fungi, lichen, plants, marine organisms of all types, insects, and higher animals including humans. These compounds are also formed abiogenically, as in volcanoes, forest fires, and other geothermal events.In some instances, natural organohalogens are precisely the same chemicals that man synthesizes for industrial use, and some of the quantities of these natural chemicals far exceed the quantities emitted by man.
Download or read book Biochemistry of the Elemental Halogens and Inorganic Halides written by Kenneth L. Kirk and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: The elements in group 17 (VIlA) of the periodic table of elements-fluorine (F), chlorine (CI), bromine (Br), and iodine (I)-were designated by Berzelius as "halogens" (Greek hals, sea salt; gennao, I beget) because of their propensity to form salts. In this first of the two volumes of Bio chemistry of the Halogens, the biochemistry of the elemental halogens and inorganic halides is reviewed. Discovery, properties, and biochemistry of the elemental halogens are reviewed first (Chapter 1). This is followed by a review of the developments in the various areas of inorganic halide biochemistry (Chapters 2 through 5). The biochemistry of thyroid hor mones is considered in Chapter 6, while biohalogenation, an important link between inorganic and organic halogen biochemistry, is reviewed in Chapter 7. Chapter 8 covers the biochemistry of products produced by human-inspired halogenation, in particular, poly halogenated compounds that present environmental problems. In Chapter 9, the process is reversed and biodehalogenation is reviewed. In each subject, the attempt has been made to find an appropriate balance between depth and breadth of treatment, since a thorough, in depth review of this field would not be possible in a single volume. To provide readers not familiar with subjects with the necessary background to place subsequent discussions in perspective, brief historical develop ments of many of the topics are given.
Download or read book Naturally Occurring Organohalogen Compounds written by A. Douglas Kinghorn and published by Springer Nature. This book was released on 2023-07-24 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number — from fewer than 25 in 1968 — to approximately 8,000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
Download or read book Progress in the Chemistry of Organic Natural Products written by and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this ASI was to bring together specialists in several complex variables (many of whom have contributed to complex potential theory) and specialists in potential theory (all of whom have contributed to several complex variables) together with young researchers and graduate students for an interchange of ideas and techniques. Not only was the status of current research presented, but also the relevant background, much of which is not yet available in books. The following topics and interconnections among them were discussed: 1. Real and Complex Potential Theory. Capacity and approximation, basic prop erties of plurisubharmonic functions and methods to manipulate their singularities and study their growth, Green functions, Chebyshev-type quadratures, electrostatic fields and potentials, propagation of smallness. 2. Complex Dynamics. Review of complex dynamics in one variable, Julia sets, Fatou sets, background in several variables, Henon maps, ergodicity, use of potential theory and multifunctions. 3. Banach Algebras and Infinite Dimensional Holomorphy. Analytic multi functions, spectral theory, analytic functions on a Banach space, semigroups of holomor phic isometries, Pick interpolation on uniform algebras and Von Neumann inequalities for operators on a Hilbert space. The basic notion of complex potential theory is that of a plurisubharmonic function.
Download or read book Halogenated Heterocycles written by Jernej Iskra and published by Springer Science & Business Media. This book was released on 2012-02-09 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores topics in Heterocyclic chemistry, including Perfluoroheteroaromatic Chemistry; Monofluorinated Heterocycles; Synthesis of beta-Halofurans; Halogenated Heterocycles as Pharmaceuticals; Green Methods in Halogenation of Heterocycles and more.
Download or read book Mechanisms of Biohalogenation and Dehalogenation written by Dick B. Janssen and published by Royal Netherlands Academy of Arts and Sciences. This book was released on 1997 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paperback. This book is concerned with the presence, biosynthesis and breakdown of various naturally occurring organohalogens. It is biochemically oriented and the current status and future prospects of biochemical halogenation and dehalogenation reactions are discussed. In particular the book focuses on the properties and mechanisms of the different enzymes involved and there is a detailed discussion on the structure-function relationship between the various dehalogenases. Also the potential and commercial applications of the enzymes involved in the biosynthesis and the use of micro-organisms in the detoxification of soils contaminated with organohalogens are reviewed. The book is the first concise overview on enzymic mechanisms rather than detailed descriptions of the sources and analysis of the halogenated products.
Download or read book Medicinal and Aromatic Plants XI written by Y.P.S. Bajaj and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medicinal and Aromatic Plants XI comprises 24 chapters. It deals with the distribution, importance, conventional propagation, micropropagation, tissue culture studies, and the in vitro production of important medicinal and pharmaceutical compounds in various species of Anagallis, Azadirachta, Centranthus, Costus, Cuphea, Dioscorea, Drosera, Fagara, Frangula, Hyacinthus, Hypericum, Jamesoniella, Karwinskia, Lactarius, Lactuca, Marribium, Menispermum, Ornithopus, Petroselinum, Phellodendron, Solanum, Solidago, and Zanthoxylum. Like the previous ten volumes published between 1988 and 1998, it is tailored to the needs of advanced students, teachers, and research scientists in the field of pharmacy, plant tissue culture, phytochemistry, biomedical engineering, and plant biotechnology in general.
Download or read book In vitro assembly of novel synthetic pathways for biohalogenation written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Organic Bromine and Iodine Compounds written by Alasdair H. Neilson and published by Springer Science & Business Media. This book was released on 2003-10-09 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume addresses a broad spectrum of the environmental issues surrounding organic bromine and iodine compounds. It covers their partition among the environmental compartments and the potential for their long-range dissemination. The important issue of their atmospheric chemistry is discussed in detail in the context of ozone depletion and global warming, and the significant difference between the reactions of methyl bromide and methyl iodide are underscored. The mammalian toxicity is discussed and the mechanisms of the degradation and transformation of organic bromine and iodine compounds addressed. There has been considerable interest in naturally occurring metabolites in the current debate on the fate and partition of methyl bromide that is an important fungicide and is produced in substantial quantities as a metabolite of marine algae. The possible natural occurrence of diphenyl ethers that are used as flame retardants have also been raised. A discussion is given on plausible mechanisms for the biosynthesis of representative organic bromine and organic iodine metabolites. Reaction pathways are illustrated throughout and comprehensive references are given.
Download or read book Naturally Produced Organohalogens written by Anders Grimvall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Should the production and use of chlorine and all chlorinated organic compounds be halted, in view of their adverse effects on the environment and human health? Those in favour argue that certain chlorinated compounds (PCBs, DDT, CFCs, etc.) have large negative environmental effects. The use of chlorine in disinfectants leads to the production of chloroform, while bulk products (PVC) contribute to the production of chlorinated dibenzo-p-dioxins and dibenzofurans when they are burned. Those against argue that chlorine and many chlorinated compounds are essential in the control of human health (the prevention of disease transmitted through drinking water that has not been disinfected), and that chlorinated compounds are indispensable intermediates in many production processes, representing a vast economic value. But such discussions often ignore the fact that Nature contributes significantly to the production of chlorinated organic compounds. More than 1000 such compounds are known, and their contribution to the biogeochemical cycling of chlorine is underestimated. Chlorine is organically bound in large quantities to humic materials, and natural production mechanisms are known for low molecular weight compounds (methyl chloride, chloroform, chlorinated dibenzo-p-dioxins and dibenzofurans). The role of these compounds in the environment is largely unknown. Naturally-Produced Organohalogens gives a complete overview of the present state of knowledge on the subject, giving a much needed balance to the argument sketched out above.
Download or read book Investigations of Halogenated Constituents Isolated from Marine Sponges Associated with Cyanobacterial Symbionts written by William David Clark and published by . This book was released on 1997 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Natural Products III written by and published by Elsevier. This book was released on 2020-07-22 with total page 4266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Natural Products III, Third Edition, Seven Volume Set updates and complements the previous two editions, including recent advances in cofactor chemistry, structural diversity of natural products and secondary metabolites, enzymes and enzyme mechanisms and new bioinformatics tools. Natural products research is a dynamic discipline at the intersection of chemistry and biology concerned with isolation, identification, structure elucidation, and chemical characteristics of naturally occurring compounds such as pheromones, carbohydrates, nucleic acids and enzymes. This book reviews the accumulated efforts of chemical and biological research to understand living organisms and their distinctive effects on health and medicine and to stimulate new ideas among the established natural products community. Provides readers with an in-depth review of current natural products research and a critical insight into the future direction of the field Bridges the gap in knowledge by covering developments in the field since the second edition published in 2010 Split into 7 sections on key topics to allow students, researchers and professionals to find relevant information quickly and easily Ensures that the knowledge within is easily understood by and applicable to a large audience
Download or read book Medicinal and Aromatic Plants written by Y. P. S. Bajaj and published by . This book was released on 1988 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: These book series cover the distribution, economic importance, conventional propagation, micropropagation, tissue culture studies, and in vitro production of important medicinal and other pharmaceutical compounds in various medicinal and aromatic crops.
Download or read book Peroxidases in Chemistry and Biology written by Johannes Everse and published by CRC Press. This book was released on 1990-11-20 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Peroxidases in Chemistry and Biology series provides up-to-date information on a wide range of developments in the field of Peroxidases, methods and applications. This is Volume 1 originally published in 1990.
Download or read book Radical Reactions in Organic Synthesis written by Samir Z. Zard and published by Oxford University Press, USA. This book was released on 2003 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction and some general concepts. -- General principles: chain reactions based on stannane chemistry. -- Further chain reactions of stannanes. -- Organo-silicon, -germanium, and -mercury hydrides. -- The Barton decarboxylation and related reactions. -- Atom and group transfer reactions. -- The persistent radical effect: non-chain processes. -- Redox processes. -- Some concluding remarks.
