Download or read book Organic Synthesis with Enzymes in Non Aqueous Media written by Giacomo Carrea and published by John Wiley & Sons. This book was released on 2008-04-09 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Closing a gap in the literature, this comprehensive book examines and discusses different non-aqueous systems from organic solvents to ionic liquids for synthetic applications, thus opening the door to new successful methods for biocatalytic reactions. It gathers into one handy source the information otherwise widely spread throughout the literature, combining useful background information with a number of synthetic examples, including industrial scale processes for pharmaceutical and fine chemicals. Extremely well structured, the text introduces the fundamentals of non-aqueous enzymology, before going on to new reaction media and synthetic applications using hydrolases and non-hydrolytic enzymes. The one-stop reference for everyone working in this hot field.

Download or read book Marine Natural Products V2 written by Poul Schever and published by Elsevier. This book was released on 2012-12-02 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine Natural Products: Chemical and Biological Perspectives, Volume II, reviews the state of knowledge in the chemistry and biology of marine natural products. It attempts to bring together timely and critical reviews that are representative of major current researches and that, hopefully, will also foreshadow future trends. The first three chapters of this volume deal with marine carotenoids, steroids, and diterpenoids. This is followed by a chapter that examines a single phylum, the Coelenterata, and its metabolites. The Coelenterata is an almost exclusively marine phylum of some 9000 described living species. Research predicts that the coelenterates will yield a rich harvest of organic metabolites. The final chapter, which focuses on 13C NMR spectroscopy for structural elucidation, reveals the power of this instrumental method especially when applied to the difficult problems of polyhalogenated marine metabolites.

Download or read book Chemistry and Biology of Nucleosides and Nucleotides written by Robert Harmon and published by Academic Press. This book was released on 2012-12-02 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemistry and Biology of Nucleosides and Nucleotides is a collection of papers presented at the symposium on the Chemistry and Biology of Nucleosides and Nucleotides, held on August 30-September 1, 1976, as part of the San Francisco Centennial Meeting of the Carbohydrate Division of the American Chemical Society. Contributors explore the chemistry and biology of nucleosides and nucleotides ans well as the different chemical and instrumental techniques used in their synthesis. This book is comprised of 28 chapters and begins by describing the synthesis of a gene and its introduction into a biological system where it proved to be functional. The synthesis of nucleosides and nucleotides with anticancer and antiviral activity is also discussed, along with the rationale for the design and synthesis of such compounds. Simple models of nucleic acid interactions are described. Subsequent chapters explore the chemistry and biological activity of C-nucleosides related to pseudouridine and of some nucleoside analogs active against tumor cells; the selectivity and stereospecificity of the ribosylation reaction; synthesis of C-glycosyl thiazoles; and C-nucleoside isosteres of some nucleoside antibiotics. This monograph will serve as reference and source material for many workers in biomedical research as teaching material for instructors of advanced science courses.

Download or read book Advances in Antiviral Drug Design written by E. De Clercq and published by Elsevier. This book was released on 1996-04-23 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the series on Advances in Antiviral Drug Design is to regularly review the "state of the art" on emerging new developments in the antiviral drug research field, thereby spanning the conceptual design and chemical synthesis of new antiviral compounds, their structure-activity relationship, mechanism and target(s) of action, pharmacological behavior, antiviral activity spectrum, and therapeutic potential for clinical use. Volume 2 begins with a description of the antiviral potential of antisense oligonucleotides by J. Temsamani and S. Agrawal. According to the aims of the anitsense technology, these oligonucleotides should be targeted at specific viral antisense technology, these oligonucleotides should be targeted at specific viral mRNA sequences so that translation to the virus-specified proteins is blocked; this has been achieved for a number of oligomers, some of which are now in clinical trials for the treatment of HIV, HCMV, and human papilloma virus (HPV) infections. Then C.-S. Yuan, S. Liu, S.F. Wnuk, M.J. Robins and R.T. Borchardt assess the role of S-adenosylhornocysteine (AdoHcy) hydrolase as target for the design of antiviral agents with broad-spectrum antiviral activity. This is followed by an in-depth account on the design and synthesis of a number of first-, second- and third-generation AdoHcy hydrolase inhibitors and their mode of action at the enzyme level.V.E. Marquez provides a comprehensive description of the various carbocyclic (carba) nucleosides that have been synthesized and evaluated for antiviral activity. Although the number and diversity of the carba-nucleosides that have been found to be antivirally active (or inactive) is astonishingly high, there is no limit to further expansion of this fascinating class of molecules. For the various nucleoside analogues that have to be intracellularly phosphorylated to the 5'-triphosphate stage, to interact with their target enzyme (i.e., herpesviral DNA polymerase or retroviral revers transcriptase) the first phosphorylation step is often the rate-limiting step, and thus various strategies are envisaged by C. Perigoud, J.-L. Girardet, G. Gosselin and J.-L. Bach on how to bypass this initial phosphorylation and to deliver the nucleoside 5'-monophophate directly inside the cells.The HIV protease has been considered as a paradigm for rational drug design. The enzyme is among the best understood in terms of both structure and action, and because of its crucial role in the maturation of HIV, it has been vigorously pursued as a target for anti-HIV chemotherapy. In their comprehensive review of the multidisciplinary approach towards the development of HIV protease inhibitors A.G. Tomasselli, S. Thaisrivongs and R.L. Heinrikson highlight those protease inhibitors which have been brought forward to clinical trials.

Download or read book Carbohydrate Chemistry written by Gijsbert van der Marel and published by CRC Press. This book was released on 2014-03-04 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second volume in the series Carbohydrate Chemistry: Proven Synthetic Methods, Volume 2 offers a collection of synthetic procedures valuable to the practice of synthetic carbohydrate chemistry. The series takes an important and unique approach in that all described procedures have been independently verified as reliable and reproducible. With editors and contributors who are highly respected scientists in the field, this book provides a widely useful reference for both researchers and students, exploring carbohydrate chemistry from both academic and industrial points of view. The book begins with an introductory section that offers tricks and tips collected by the series editor from many years of experience working in carbohydrate laboratories. The subsequent chapters present detailed protocols on both specific synthetic transformations and the preparation of common synthetic intermediates, with figures to aid in comprehension. Procedures are described for regioselective benzylidene ring opening reactions, oxidation reactions to provide uronic acids, stereoselective alpha-glucosylation reactions, and more. Protocols for synthetic intermediates of general utility include 3,4,6-tri-O-acetyl-d-galactal, phenyl 4,6-O-benzylidene-1-thio-α-d-mannopyranoside, 1,2-anhydro-3,4,6-tri-O-benzyl-β-d-mannopyranoside, and methyl N-acetylneuraminic acid, among many others. Each chapter presents in-depth experimental descriptions for the reported procedures, including reaction setup, reaction conditions, work-up procedures, and purification protocols. The chapters also provide detailed characterization of all products and intermediates as well as copies of the 1H NMR and 13C NMR of the described products and intermediates to indicate the purity of the obtained materials and to serve as a valuable reference for future practitioners. This book provides an important starting point to reliably access synthetic carbohydrate materials and as such offers a valuable resource for the synthetic organic chemistry community. Through the streamlined access of well-defined products it provides a thrust to the rapidly growing field of chemical glycobiology.

Download or read book Mechanistic and Synthetic Aspects of Organic and Biological Electrochemistry written by Dennis G. Peters and published by The Electrochemical Society. This book was released on 2003 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fortschritte der Chemie organischer Naturstoffe 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 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volumes of this classic series, now referred to simply as Zechmeister after its founder, L. Zechmeister, have appeared under the Springer Imprint ever since the series' inauguration in 1938. The volumes contain contributions in various topics related to the origin, distribution, chemistry, synthesis, biochemistry, function or use of various classes of naturally occurring substances ranging from small molecules to biopolymers. Each contribution is written by a recognized authority in his field and provides a comprehensive and up-to-date review of the topic in question. Addressed to biologists, technologists, and chemists alike, the series can be used by the expert as a source of information and literature citations and by the non-expert as a means of orientation in a rapidly developing discipline.

Download or read book Structure and Function of Cholinesterases and Related Proteins written by Bhupendra P. Doctor and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sixth International Meeting on Cholinesterases and Related Proteins, Choli nesterases '98, was organized by Palmer Taylor and his associates at the University of California-San Diego and convened in La Jolla, California, USA, in March of 1998. This was the first conference of the series to be held in the United States, let alone on the Pa cific Rim. Nearly 200 delegates from twenty countries-from Asia, Australia, Europe, and North and South America-heard 75 oral presentations and viewed 90 posters on current research on cholinesterases and related proteins. The meeting framework was structured to include two days of plenary sessions, followed by two days of concurrent sessions and workshops in specific areas. Communication at the concurrent sessions was facilitated by the conference settings of the Martin Johnson House, on a scenic bluff overlooking the blue Pacific Ocean, and the San Diego Supercomputer Center, which enabled projection and rotation of protein structures in three dimensions for a large audience. This book is the compilation of the presentations at the Sixth International Meeting on Cholinesterases and Related Proteins into a volume that describes recent investigations on the structure, catalytic and non-catalytic functions of acetylcholinesterase (AChE), butyrylcholinesterase (BuChE), and related proteins, as well as studies on the molecular and cellular biology of these enzymes and the genes that encode them.

Download or read book Cholinesterases Advances in Research and Application 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-06-21 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cholinesterases—Advances in Research and Application: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Butyrylcholinesterase. The editors have built Cholinesterases—Advances in Research and Application: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Butyrylcholinesterase in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Cholinesterases—Advances in Research and Application: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book The Bartonian Legacy written by Pierre Potier and published by World Scientific. This book was released on 2000-12-18 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bartonian Legacy is a collection of memoirs, reminiscences and biographical details regarding Sir Derek Barton (1918-1998) who was one of the most influential organic chemists of the 20th Century. The chapters are contributed by some of his many students, coworkers and scientific colleagues, all of whom testify to his fascinating character and true genius. It offers intimate glimpses at Sir Derek's scientific life, his sense of humor and his modus operandi as a teacher of research methods. The volume will serve as a valuable companion work to the more official biographies and obituaries, several of which have already been published./a

Download or read book Chemistry Structure and Function of Peptides written by Michel Marraud and published by John Libbey Eurotext. This book was released on 1970 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes proceedings of the 2nd Forum on Peptides held in Nancy, 2 to 6 May 1988.

Download or read book Strategies and Advanced Techniques for Marine Pollution Studies written by C.S. Giam and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: A distinction between contamination and pollution is useful when we wish to consider what strategies to adopt in researching the impact of anthropogenic activities on the marine environment. Contamination strictly refers to the chemical burden imposed on the system and is evaluated in terms of the concentrations of chemical compounds in various abiotic (e. g water, suspended particulate matter, sediments) and biotic (plant and animal, pelagic and benthic) components. The concept of pollution, on the other hand, infers an assessment of biological response to the measured levels of contamination. This response may be measured at various levels of biological organisation, from molecular events within the cell to changes in such ecosystem properties as nutrient flux and biological productivity. Such measures of biological response need not infer any value judgements regarding putative damage or disturbance to the natural systems, although the biologist will usually have in mind a reference point of normality with which to compare the measured response; departure from this "normality" may then provide a quantitiative index of disturbance. The challenge to scientists engaged in research into marine contamination and pollution is to weld the chemical and biological elements together (always with reference also to the physical features of the environment) so as to provide a coherent framework for the quantitative evaluation of environmental response.

Download or read book Enzymes of the Cholinesterase Family written by A.S. Balasubramanian and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fifth International Meeting on Cholinesterases convened in Madras, India, in September of 1994. The long and rich history and culture of India provided an excellent setting for the meeting. More than 120 delegates from Asia, Australia, Europe and North America heard 54 oral presentations and viewed 54 posters on current research on enzymes of the cholinesterase family. The aim of this book is to compile the presentations of the Fifth International Meeting on Cholinesterases into a volume that describes recent investigations on the structure and catalytic function of acetylcholinesterase (AChE), butyrylcholinesterase (BuChE) and related enzymes, as well as studies on the molecular and cellular biology of these enzymes and the genes which encode them. Cholinesterases enjoy a long and storied history in diverse areas. In basic biochemical research, AChE is one of the best studied, though yet enigmatic, of enzymes. The efficient catalytic function of this enzyme presents the biochemist with a fundamental challenge in understanding the relationship between structure and function. AChE and BuChE belong to a family of proteins, the alB hydrolase fold family, whose constituents evolutionarily diverged from a common ancestor. Proteins in this family have a wide range of physiological functions. In commerce, AChE is a prime target for agricultural insect control, and for the development of therapeutic agents for Alzheimer's disease.

Download or read book Issues in Biochemistry and Geochemistry 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 3740 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Biochemistry and Geochemistry / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Biochemistry and Geochemistry. The editors have built Issues in Biochemistry and Geochemistry: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Biochemistry and Geochemistry in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Biochemistry and Geochemistry / 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book Photochemical Probes in Biochemistry written by Peter E. Nielsen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of using photochemical probes in the study of biological systems was developed by Westheimer who published the first photoaffinity labeling experiments more than twenty years ago (J.Bio1. Chem. 237, (1962) 3006). Since then the concept has been used successfully in various areas of biochemistry and recently several new interesting and exciting aspects of the concept have been developed. It is the general opinion by scientists in the "field" that the full potential of photochemical probes in biochemical studies has far from been exploited yet. This is mostly due to the interdisciplinary character of the concept involving photochemistry, synthetic chemistry as well as biochemistry/molecular biology. The perspective of the NATO advanced workshop on "Photochemical Probes in Biochemistry", held in Holte (Copenhagen) Denmark 14-19, August, 1988, was several fold. The workshop was to give an account of the "state of the art" of using photochemical probes in biochemistry as well as to bring together specialists in photochemistry, syn thetic chemistry and molecular biology in order to analyze advantages as well as the inherent problems and pitfalls of the concept and provide suggestions and guidelines for fu ture research. Furthermore, it is the hope of the editor that the present publication which gives an account of the lectures presented at the workshop, will provide an introduction to scientists who are not familiar with photochemical probes, but to whom these could help answer central and pertinent questions.

Download or read book Official Gazette of the United States Patent and Trademark Office written by and published by . This book was released on 1998 with total page 1140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pharmaceutical Aspects of Oligonucleotides written by Patrick Couvreur and published by CRC Press. This book was released on 2003-09-02 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oligonucleotides diffuse poorly through biological barriers, including cell membranes. They are also rapidly degraded in vivo by nucleuses. Aiming to improve the administration of compounds, the book studies the development of nucleotide chemistry.