Download or read book A Study of Structures of Molecular Complexes Found in Heavy Petroleum Fractions written by George W. Le Maire and published by . This book was released on 1958 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heterocyclic Compounds written by Kristian Nylund and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterocyclic compounds are organic compounds containing at least one atom of carbon, and at least one element other than carbon, such as sulphur, oxygen or nitrogen within a ring structure. These structures may comprise either simple aromatic rings or non-aromatic rings. Some examples are pyridine (C5H5N), pyrimidine (C4H4N2) and dioxane (C4H8O2). Many heterocyclic compounds, including some amines, are carcinogenic. This book details the proposed mechanisms of Gewald-like reactions and the wide scope of substituted 2-aminothiophenes for real life applications. Literary information about synthesis methods, structure, physical-chemical and biological properties is summarised, and also information about conversion of adamantyl-1 and adamantyl-2 imidazole and benzimidazole derivatives is given. In addition, 3-acetylindole derivatives have been in the centre of attention of researchers over many years due to the high practical value of these compounds. This book presents a survey of the literature on 3-acetylindoles chemistry and provides useful and up-to-date data for medicinal chemists.
Download or read book Journal of the Chemical Society written by and published by . This book was released on 1923 with total page 1330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interpretation of the Ultraviolet Spectra of Natural Products written by A. I. Scott and published by Elsevier. This book was released on 2013-10-22 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interpretation of the Ultraviolet Spectra of Natural Products focuses on the ultraviolet spectrum of chromophores. The book first discusses single chromophores, including absorption due to electron lone pairs in saturated systems and absorption of olefins, alkynes, carbonyl compounds, and thiocarbonyl compounds. The text also takes a look at conjugated chromosomes, such as polyenes, enynes, and conjugated azomethines. The selection also evaluates C-aromatic compounds. Topics include benzenoid and hydrocarbons; phenols and their ethers; styrenes and stilbenes; aromatic carbonyl compounds; and nitro compounds. The text also discusses O- and S- heteroaromatic compounds and N-heteroaromatic compounds. The book highlights the applications of spectrophotometry to the analysis of natural products. Topics include formation of derivatives having absorbing chromophores; reactions leading to changes in absorption of added reagents; and analyses involving transformation to products suitable for spectrophotometry. The text is a good reference for readers wanting to explore chromophores.
Download or read book Advances in Heterocyclic Chemistry written by and published by Academic Press. This book was released on 1966-01-01 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Heterocyclic Chemistry
Download or read book Synthesis of Naturally Occurring Nitrogen Heterocycles from Carbohydrates written by El Sayed H. El Ashry and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbohydrates are widely distributed in nature and widely available, and so are considered as a promising feedstock for the preparation of many organic chemical compounds. They are particularly useful in the preparation of nitrogen heterocycles because of their related structural characteristics and easy availability. Synthesis of Naturally Occurring Nitrogen Heterocycles from Carbohydrates will review the recent literature dealing with use of carbohydrates as raw materials in the synthesis of these materials. The text contains six chapters arranged according to the complexity of the heterocyclic compounds discussed, ranging from five to seven membered rings and from single to multiple fused rings. The book provides a detailed discussion of the various synthetic approaches to these compounds, using carbohydrate starting materials, and does not merely reference synthetic methodology but attempts to give as much detail as possible on the actual experimental conditions used, in such a way that the chemist can use the information directly to design a multi-step synthesis. It discusses the different approaches to the synthesis of a wide range of naturally occurring nitrogen heterocycles in a format that enables the reader to make comparisons and decisions on whether to use a certain procedure, to modify it, or to devise a new synthetic methodology.
Download or read book How Tobacco Smoke Causes Disease written by United States. Public Health Service. Office of the Surgeon General and published by . This book was released on 2010 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.
Download or read book Index to Reviews Symposia Volumes and Monographs in Organic Chemistry written by Norman Kharasch and published by Elsevier. This book was released on 2013-10-22 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: Index to Reviews, Symposia Volumes and Monographs in Organic Chemistry for the Period 1940-1960 presents a resume of published monographs, reviews, and symposia lectures in organic chemistry. The editors adopted the plan of listings by symposia volume or journal, backed up by the total subject and author indexes. In this way the user can readily locate a particular article through the author index or the subject index; or should he recall that an article appeared in a particular source, the chronological listing in that source can be scanned quickly. The Index gives a convenient overview of the accomplishments of organic chemists during this very prolific period of the growth of the field. Frequently, several articles on the same or similar subject appear, hence the historical perspective can be sensed by rapid evaluation of the reviews selected. This Index will be useful to research workers, teachers and students. It will also assist editors and authors to select specific areas which require critical review.
Download or read book Quarterly Journal of the Chemical Society of London written by Chemical Society (Great Britain) and published by . This book was released on 1923 with total page 1326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quarterly Journal of the Chemical Society of London written by Chemical Society (Great Britain) and published by . This book was released on 1961-07 with total page 1726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Green Synthesis of Heterocycles written by Fabio Arico and published by Frontiers Media SA. This book was released on 2020-03-09 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the Chemical Society written by Chemical Society (Great Britain) and published by . This book was released on 1923 with total page 1328 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Titles of chemical papers in British and foreign journals" included in Quarterly journal, v. 1-12.
Download or read book Metal and Nonmetal Assisted Synthesis of Six Membered Heterocycles written by Navjeet Kaur and published by Elsevier. This book was released on 2020-04-25 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal and Nonmetal Assisted Synthesis of Six-Membered Heterocycles provides a useful guide to key approaches being explored in this area. The volume highlights synthetic approaches and catalytic options that facilitate the construction of multiple substituted molecules under mild conditions from easily available starting substrates. Drawing on the experience of its expert author, the book is a useful guide on the key approaches being explored in this area. Following a user-friendly structure based on specific six-membered heterocycle ring groups, this volume highlights synthetic approaches and catalytic options that facilitate the construction of multiple substituted molecules under mild conditions from easily available starting substrates. - Highlights new methodologies for the synthesis of different six-membered heterocycles - Provides an up-to-date overview of this fast-moving field with an easy-to-use structure - Includes novel approaches used in the study and application of catalysts in synthetic organic reactions
Download or read book Heterocyclic Compounds Polycyclic compounds containing two hetero atoms in different rings Five and six membered heterocycles containing three hetero atoms and their benzo derivatives written by Robert Cooley Elderfield and published by . This book was released on 1961 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1972 with total page 1354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Search for Biological Active Agent s From Actinobacteria 2nd Edition written by Learn-Han Lee and published by Frontiers Media SA. This book was released on 2020-03-27 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a large market demand for new drugs. The existing chronic or common ailments without cures, development of new diseases with unknown causes, and the widespread existence of antibiotic-resistant pathogens, have driven this field of research further by looking at all potential sources of natural products. To date, microbes have made a significant contribution to the health and well-being of people globally. The discoveries of useful metabolites produced by microbes have resulted in a significant proportion of pharmaceutical products in today’s market. Therefore, the investigation and identification of bioactive compound(s) producing microbes is always of great interest to researchers. Actinobacteria are one of the most important and efficient groups of natural metabolite producers. Among the numerous genera, Streptomyces have been recognized as prolific producers of useful natural compounds, as they provide more than half of the naturally-occurring antibiotics isolated to-date and continue to emerge as the primary source of new bioactive compounds. Certainly, these potentials have attracted ample research interest and a wide range of biological activities have been subsequently screened by researchers with the utilization of different In vitro and In vivo model of experiments. Literature evidence has shown that a significant number of interesting compounds produced by Actinobacteria were exhibiting either strong anticancer or neuroprotective activity. The further in depth studies have then established the modulation of apoptotic pathway was involved in those observed bioactivities. These findings indirectly prove the biopharmaceutical potential possessed by Actinobacteria and at the same time substantiate the importance of diverse pharmaceutical evaluations on Actinobacteria. In fact, many novel compounds discovered from Actinobacteria with strong potential in clinical applications have been developed into new drugs by pharmaceutical companies. Together with the advancement in science and technology, it is predicted that there would be an expedition in discoveries of new bioactive compounds producing Actinobacteria from various sources, including soil and marine sources. In light of these current needs, and great interest in the scope of this research, this book seeks to contribute on the investigation of different biological active compound(s) producing actinobacteria which are exhibiting antimicrobial, antioxidant, neuroprotective, anticancer activities and similar.
