Download or read book Dissertation Abstracts International written by and published by . This book was released on 1991 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Faculties Publications and Doctoral Theses in Chemistry and Chemical Engineering at United States Universities written by American Chemical Society. Committee on Professional Training and published by . This book was released on 1991 with total page 1646 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1990 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Progress in the Chemical Synthesis of Antibiotics and Related Microbial Products written by Gabor Lukacs and published by . This book was released on 1993 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marine Natural Products Diversity and Biosynthesis written by Paul J. Scheuer and published by Springer. This book was released on 1993-07-23 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. B.J. Baker, R.G. Kerr: Biosynthesis of Marine Sterols 2. C.W.J. Chang, P.J. Scheuer: Marine Isocyano Compounds 3. G. Cimino, G. Sodano: Biosynthesis of Secondary Metabolites in Marine Molluscs 4. W.H. Gerwick, D.G. Nagle, P.J. Proteau: Oxylipins from Marine Invertebrates

Download or read book Circular Dichroism written by Nina Berova and published by John Wiley & Sons. This book was released on 2000-05-03 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unter Zirkulardichroismus (CD) versteht man die spezifisch unterschiedliche Absorption von links- und rechtszirkular polarisiertem Licht durch bestimmte Moleküle. CD-Effekte lassen sich in Abhängigkeit von der Wellenlänge messen und spektroskopisch auswerten. Dieser Band erläutert Theorie und Anwendung der CD-Spektroskopie insbesondere für Biomoleküle. Ausführlich behandelt werden Anwendungen auf den Gebieten der organischen Stereochemie und der Biopolymere. Geschrieben von anerkannten Spezialisten! (06/00)

Download or read book Analysis of Chiral Organic Molecules written by Peter Schreier and published by Walter de Gruyter. This book was released on 1995 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: For readers at least moderately familiar with the theory of analyzing volatile aroma compounds, an introduction to the wide range of techniques for analyzing chiral molecules. They include chiroptical methods such as polarimetry, optical rotation dispersion and circular dichroism; liquid, gas, super

Download or read book Introduction to Alkaloids written by Geoffrey A. Cordell and published by John Wiley & Sons. This book was released on 1981 with total page 1078 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Products Chemistry III written by T.I. Atta-ur-Rahman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural product chemistry has undergone an explosive growth during the latter half of the current century. This has been brought about by a number of factors. One of these has been the growing number of sub stances from natural sources which display interesting pharmacological activities. These include antibiotics, anti-tumor agents, immunostimu lants, drugs affecting the cardiovascular and central nervous systems, analgesics etc. Another factor has been the improvements made in the technology of isolation processes which includes the development of such techniques as high pressure liquid chromatography which has al lowed the rapid isolation of substances which were previously diffi cult to obtain by classical procedures. The most important factor has been the development of new spectrosopic techniques which have opened up whole new vistas in this exciting field. Prominent in these advan ces has been the advent of powerful superconducting magnets with very stable magnetic fields, and pulse NMR in which the duration, direction and phases of pulses can be accurately controlled by means of mini computers. These have heralded the advent of two-dimensional NMR spec troscopy which has now come to be routinely employed in unravelling complex structures. No less important, though somewhat less dramatic, have been the advances made in the field of mass spectroscopy where new ionization techniques such as positive and negative fast atom bom bardment, field desorption, chemical ionization etc. have allowed the mass spectra of larger non-volatile substances to be recorded. The field of organic synthesis has seen equally rapid advances.

Download or read book Crystal Structure Analysis written by Jenny Pickworth Glusker and published by OUP Oxford. This book was released on 2010-05-27 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to explain how and why the detailed three-dimensional architecture of molecules can be determined by an analysis of the diffraction patterns obtained when X rays or neutrons are scattered by the atoms in single crystals. Part 1 deals with the nature of the crystalline state, diffraction generally, and diffraction by crystals in particular, and, briefly, the experimental procedures that are used. Part II examines the problem of converting the experimentally obtained data into a model of the atomic arrangement that scattered these beams. Part III is concerned with the techniques for refining the approximate structure to the degree warranted by the experimental data. It also describes the many types of information that can be learned by modern crystal structure analysis. There is a glossary of terms used and several appendixes to which most of the mathematical details have been relegated.

Download or read book Studies in Natural Products Chemistry written by Atta-ur- Rahman and published by Elsevier. This book was released on 2012-12-06 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural products play an integral and ongoing role in promoting numerous aspects of scientific advancement, and many aspects of basic research programs are intimately related to natural products. With articles written by leading authorities in their respective fields of research, Studies in Natural Products Chemistry, Volume 37 presents current frontiers and future guidelines for research based on important discoveries made in the field of bioactive natural products. It is a valuable source for researchers and engineers working in natural products and medicinal chemistry. - Describes the chemistry of bioactive natural products - Contains contributions by leading authorities in the field - A valuable source for researchers and engineers working in natural product and medicinal chemistry

Download or read book The Basics of Crystallography and Diffraction written by Christopher Hammond and published by OUP Oxford. This book was released on 2009-05-07 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a clear introduction to topics which are essential to students in a wide range of scientific disciplines but which are otherwise only covered in specialised and mathematically detailed texts. It shows how crystal structures may be built up from simple ideas of atomic packing and co-ordination, it develops the concepts of crystal symmetry, point and space groups by way of two dimensional examples of patterns and tilings, it explains the concept of the reciprocal lattice in simple terms and shows its importance in an understanding of light, X-ray and electron diffraction. Practical examples of the applications of these techniques are described and also the importance of diffraction in the performance of optical instruments. The book is also of value to the general reader since it shows, by biographical and historical references, how the subject has developed and thereby indicates some of the excitement of scientific discovery.

Download or read book Naturally Occurring Quinones written by R Thomson and published by Elsevier. This book was released on 2012-12-02 with total page 745 pages. Available in PDF, EPUB and Kindle. Book excerpt: Naturally Occurring Quinones aims to discuss where quinones, a major group of organic compounds that are considered as pigments, can be found in nature. The book also explains its significance in chemistry and other related fields. The text also mentions the different plant and animal origins of these compounds. The book covers the biogenesis and distribution of these organic compounds; their identification and spectra; and the different kinds of quinolones, which include benzoquinones, naphthaquinones, julichromes, and laccaic acids. The text also elaborates on anthracyclinones and their stereochemistry; extended quinolones, including elsinochromes, erythroaphins, xanthoaphins, chrysoaphins, and aphinins; and miscellaneous quinolones, such as royleanones, tanshinones, isotanshinones, and mitomycins. The text is recommended for students and practitioners in the field of chemistry, biochemistry, and biology, especially those who want to further understand quinolones, their importance in nature and different species, and their possible uses.

Download or read book Current Trends in Organic Synthesis written by Carlo Scolastico and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last two decades have seen a rapid growth in the synthetic processing of both simple and complex molecules, aimed at meeting the needs of society in all aspects of life. Many efforts have been devoted to the development of new biologically active compounds, new materials with innovative properties such as bio-compatibility, new catalysts that allow highly selective transformations, and technologies that facilitate the synthetic pro cesses. This book is a compendium of recent progress in all these aspects of synthetic chemistry. It collects the lectures of the XII International Conference on Organic Synthesis, held in Venice from June 28 to July 2, 1998, in which the present state of art of this discipline has been reported. The topics covered include: combinatorial chemistry, new synthetic methods, stereo selective synthesis, metal-mediated synthesis, and target oriented synthesis. The book collects the contributions, in the mentioned topics, of 43 scientists from 19 different countries. The contributions presented in the Conference as plenary lectures are reported in the first section of the book. Particular attention has been dedicated to combinatorial chemistry, a new and promising methodology for the synthesis of libraries of pharmaco logically interesting compounds in order to allow the automatic pharmacological screening of thousands of compounds. The Conference has dedicated to combinatorial chemistry a mini-symposium in which scientists from academy and companies have described the current trends of this very new technology.

Download or read book Ord and Cd in Chemistry and Biochemistry written by Pierre Crabbe and published by Elsevier. This book was released on 2012-12-02 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: ORD and CD in Chemistry and Biochemistry: An Introduction essentially presents the necessary foreword and theoretical foundation for the useful application of optical rotatory dispersion (ORD) and circular dichroism (CD) to certain common chemical problems. This book emphasizes the precision of ORD and CD data in terms of stereochemical information. The book begins with some historical references and a concise review of basic principles on stereochemistry. It further delves onto the phenomena of optical activity. Also included are the definitions and units commonly used in ORD and CD. The book also discusses optical properties of polymers, organometallic, and inorganic derivatives; and some of the aspects of magnetic optical rotator dispersion (MORD) and magnetic circular dichroism (MCD). A table that presents wavelength range of the Cotton effects of most chromophoric groupings concludes the book. This monograph is a helpful reference to students as well as professionals from both chemistry and biochemistry fields of science.

Download or read book Pigments in Plants written by Franz-Christian Czygan and published by . This book was released on 1980 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light and pigments; Carotenoid biosynthesis; The reversible, light-induced conversions of xanthophyllis in the chloroplast; Photoregulation of carotenoid biosynthesis: an example of photomorphogenesis; Some remarks on the usefulness of algal carotenoids as chemotaxonomic markers; Chromoplasts; Terpenoid, especially diterpenoid pigments; Recent developments in flavonoid biosynthesis; Degradation of flavonoids and isoflavonoids; Flavonoids as chemotaxonomic markers in plants; Chlorophyll biosynthesis. Ensymes and regulation of ensyme activities; The biological degradation of chlorophyll in senescent tissues; Plant biliproteins; Quinonoid pigments; Betalains; Pigments of higher fungi (macromycetes).

Download or read book The Nuclear Overhauser Effect in Structural and Conformational Analysis written by David Neuhaus and published by Wiley-VCH. This book was released on 1989 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Nuclear Overhauser Effect in Structural and Conformational Analysis, Second Edition, uniquely explains the NOE in detail, making it an indispensable resource for the novice as well as the experienced NMR researcher.