Download or read book Preparative Enantioselective Chromatography written by Geoffrey B. Cox and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of chiral liquid chromatography, facilitating thestraightforward separation of enantiomers, was a significantadvance in chromatography, leading to widespread application inanalytical chemistry. Application in preparative chromatography hasbeen less rapid, but with the development of single enantiomerpharmaceuticals its use is increasingly common in chemicalsynthesis at laboratory, pilot plant and even full productionscale. Brings non-experts up to speed quickly and comprehensively,facilitating the rapid development of effective separations ofenantiomeric mixtures on a range of process scales Presents case studies drawn from within the pharmaceuticalindustry to clearly illustrate the utility and value of preparativescale enantioselective chromatography in chemical research,development and production Key reference source and entry to the literature so the readerdoes not have to engage in expensive and time consuming literaturesearching

Download or read book Chiral Chromatography written by Thomas E. Beesley and published by John Wiley & Sons. This book was released on 1999-01-26 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eine Ergänzung anderer, in der Reihe Separation Sciences bereits erschienener Titel. Viel Theorie und zahlreiche Anwendungsbeispiele für die Praxis der chiralen HPLC- und GC-Trennung machen dieses top-aktuelle Buch zu einer unverzichtbaren Informationsquelle für jeden Neueinsteiger auf diesem Gebiet. (11/98)

Download or read book Chromatographic Enantioseparation written by Stig G. Allenmark and published by Ellis Horwood. This book was released on 1988 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Allenmark (microbiological chemistry, U. of Gothenburg) gives a thorough treatment of chiral chromatography, covering basic theory, methods (particularly stationary phase design), and applications. Treatment is self-contatined; early chapters explain principles, incorporating background material on organic stereochemistry; later ones cover instrumentation, preparation, synthesis, and analysis. Includes in-depth coverage of liquid chromatographic methods and discussion of industrial uses for large-scale preparative resolutions, including column sample capacity, chromatographic reproducability, and automatic operation. Acidic paper. Annotation copyrighted by Book News, Inc., Portland, OR

Download or read book Chiral Separation Techniques written by G. Subramanian and published by Wiley-VCH. This book was released on 2001 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a completely revised and updated sequel to 'A Practical Approach to Chiral Separations by Liquid Chromatography' by the same editor. The scope has been extended to further chiral separation techniques like electrophoresis, membrane separations, or biological assays. More emphasis is put on preparative separation techniques. From reviews of the previous edition: 'A team of experts from academic and industrial laboratories throughout the world have compiled their findings and experience to make this book an exceptionally timely and unique contribution to the field' European Journal of Drug Metabolism 'The dense mass of information contained in this book will make it a valuable resource ...' Chemical Engineering Research '... this is a worthwhile addition to the expanding chiral literature and the book should be of value to those working in this field' The Analyst

Download or read book Chiral Liquid Chromatography written by w Lough and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: While working as a chromatographer in the pharmaceutical industry, it became apparent to the editor that there was a pressing need for a comprehensive reference text for analysts working on the resolution of enantiomers by liquid chromatography (LC). This need arises from the fact that, whereas previously it was very difficult to determine enantiomers by direct means, there is now a wide choice of direct LC methods. At the same time, regulatory authorities have been changing their attitudes towards the administration of pharmaceuticals as racemates, partly because it is now possible to study the individual enantiomers. Clearly this abundance of new information needs to be rationalized. More importantly, the chiral LC systems which are commercially available or readily accessible to the practising chromatographer needed to be reviewed and, to a much greater extent than in existing reviews or books, discussed in terms of their practical application. Accordingly this book is very much orientated towards the practical aspects of these commercially available and readily accessible chiral LC systems. To this end, it is written for practising chromatographers by a team of practising, experienced chromatographers who have spent many years tackling the problems presented by resolving enantiomers by LC. The practical aspects of common chiral LC systems cannot be fully understood if discussed in isolation.

Download or read book Preparative Chromatography written by H. Schmidt-Traub and published by John Wiley & Sons. This book was released on 2012-09-27 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely revised and substantially extended to reflect the developments in this fast-changing field. It retains the interdisciplinary approach that elegantly combines the chemistry and engineering involved to describe the conception and improvement of chromatographic processes. It also covers recent advances in preparative chromatographic processes for the separation of "smaller" molecules using standard laboratory equipment as well as the detailed conception of industrial chemical plants. The increase in biopharmaceutical substances is reflected by new and revised chapters on different modifications of continuous chromatography as well as ion-exchange chromatography and other separation principles widely used in biochromatography. Following an introductory section on the history of chromatography, the current state of research and the design of chromatographic processes, the book goes on to define the general terminology. There then follow sections on stationary phases, selection of chromatographic systems and process concepts. A completely new chapter deals with engineering and operation of chromatographic equipment. Final chapters on modeling and determination of model parameters as well as model based design, optimization and control of preparative chromatographic processes allow for optimal selection of chromatographic processes. Essential for chemists and chemical engineers in the chemical, pharmaceutical, and food industries.

Download or read book Enantiomer Separation written by Fumio Toda and published by Springer Science & Business Media. This book was released on 2007-11-04 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: In spite of important advances in asymmetric synthesis, chiral compounds cannot all be obtained in a pure state by asymmetric synthesis. As a result, enantiomer separation remains an important technique for obtaining optically active materials. Although asymmetric synthesis is a once-only procedure, an enantiomer separation process can be repeated until the optically pure sample is obtained. This book discusses several new enantiomer separation methods using modern techniques developed by experts in the field. These methods consist mainly of the following three types: 1) Enantiomer separation by inclusion complexation with a chiral host compound 2) Enantiomer separation using biological methods 3) Enantiomer separation by HPLC chromatography using a column containing a chiral stationary phase. Separation of a racemic compound has been called “optical resolution” or simply “resolution”. Nowadays, the descriptions “enantiomer resolution” or “enantiomer separation” are also commonly used. Accordingly, “Enantiomer Separation” is used in the title of this book. The editor and all chapter contributors hope that this book is helpful for scientists and engineers working in this field.

Download or read book Chiral Analysis written by Kenneth W. Busch and published by Elsevier. This book was released on 2011-10-13 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chiral Analysis covers an important area of analytical chemistry of relevance to a wide variety of scientific professionals. The target audience is scientific professionals with an undergraduate background in chemistry or a related discipline, specifically organic chemists, researchers in drug discovery, pharmaceutical researchers involved with process analysis or combinatorial libraries, and graduate students in chemistry. Chapters have been written with the nonspecialist in mind so as to be self-contained. * Broad coverage - spectroscopic and separation methods covered in a single volume * Up-to-date and detailed review of the various techniques available and/or under development in this field * Contributions from leading experts in the field

Download or read book Chiral Recognition in Separation Methods written by Alain Berthod and published by Springer Science & Business Media. This book was released on 2010-06-16 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: What drives a scientist to edit a book on a speci c scienti c subject such as chiral mechanisms in separation methods? Until December 2005, the journal Analytical Chemistry of the American Chemical Society (Washington, DC) had an A-page section that was dedicated to simple and clear presentations of the most recent te- niques or the state of the art in a particular eld or topic. The “A-page” section was prepared for a broad audience of chemists including industrial professionals, s- dents as well as academics looking for information outside their eld of expertise. 1 Daniel W. Armstrong, one of the editors of this journal and a twenty-year+ long friend, invited me to present my view on chiral recognition mechanisms in a simple and clear way in an “A-page” article. In 2006, the “A-page” section was maintained as the rst articles at the beginning of each rst bi-monthly issue but the pagination was no longer page distinguished from the regular research articles published by the journal. During the time between the invitation and the submission, the A-page section was integrated into the rest of the journal and the article appeared as (2006) Anal Chem (78):2093–2099.

Download or read book Chiral Separations written by Gerald Gübitz and published by Springer Science & Business Media. This book was released on 2008-02-02 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prominent experts from around the world detail the chromatographic and electroseparation techniques they have developed for chiral separations on an analytical scale. Described in step-by-step detail to ensure successful experimental results, the procedures are presented as either general methods or as specific applications to substance classes and special compounds, with emphasis on high performance liquid chromatography and capillary electrophoresis techniques, but also including thin layer chromotographic, gas chromatographic, supercritical fluid chromatographic as well as recent electrochromotographic techniques.

Download or read book Chirality in Drug Research written by Eric Francotte and published by John Wiley & Sons. This book was released on 2007-09-24 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Divided into the three main sections of synthesis, analysis and drug development, this handbook covers all stages of the drug development process, including large-scale synthesis and purification of chirally pure pharmaceuticals. The two editors from academia and a major pharmaceutical company have assembled an experienced, international team who provide first-hand practical advice and report previously unpublished data. In the first section, the isolation of chiral drugs from natural sources, their production in enzymatic processes and the resolution of racemic mixtures in preparative chromatography are outlined in separate chapters. For the section on qualitative and quantitative analysis, enantioselective chromatographic methods are presented as well as optical methods and CE-MS, while the final section deals with the pharmacology, pharmacokinetics and metabolic aspects of chiral drugs, devoting whole chapters to stereoselective drug binding and modeling chiral drug-receptor interactions. With its unique industry-relevant aspects, this is a must for medicinal and pharmaceutical chemists.

Download or read book Chiral Separations and Stereochemical Elucidation written by Quezia Bezerra Cass and published by John Wiley & Sons. This book was released on 2023-03-29 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: An expert resource for chemists using stereochemical analysis methods In Chiral Separations and Stereochemical Elucidation: Fundamentals, Methods, and Applications, a team of distinguished researchers delivers a robust and authoritative discussion of the theoretical fundamentals of chiral separation, the most commonly used chiral selectors, and stereochemical elucidation methods. The book offers expert discussions of a variety of chiral separation methods by gas chromatography (GC), supercritical fluid chromatography (SFC), capillary electrophoresis (CE), and liquid chromatography (LC). The authors also describe several methods for stereochemical elucidation, including X-ray crystallography, nuclear magnetic resonance spectroscopy, and chiroptical methods. The explored material is ideal for practicing chemists seeking a resource to help them guide method development and optimization or to explain quality control-complements during target compound production. Readers will also find: A thorough introduction to the most important advances and applications in LC, GC, CE, SFC, and preparative chromatography Comprehensive explorations of the role of 2D-LC for chiral separation methods development and applications Practical discussions of the design, mechanisms, and applications of the most commonly used chiral selectors Fulsome treatments of the theoretical backgrounds, advantages, limitations, and applications of stereochemical elucidation methods Perfect for academic and industrial chemists specially in organic, analytical chemistry and pharmaceutical analysis. Chiral Separations and Stereochemical Elucidation: Fundamentals, Methods, and Applications will also benefit biochemists, environmental analysts, forensic and medicinal chemists as well as natural product chemists and those involved with stereochemistry or structural elucidation.

Download or read book Chiral Separations written by Bezhan Chankvetadze and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chiral Separation Methods for Pharmaceutical and Biotechnological Products written by Satinder Ahuja and published by John Wiley & Sons. This book was released on 2011-03-31 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses chiral separations and offers guidance for selecting the optimum method for desired results Chiral separations represent the most intriguing and, by some measures, most difficultseparations of chemical compounds. This book provides researchers and students an under-standing of chiral separations and offers a convenient route to selecting the best separation method, saving considerable time and cost in product development. Considering chiral separations in the biotechnological and pharmaceutical industries, as well as for food applications, Dr. Ahuja provides insights into a broad range of topics. Opening with a broad overview of chiral separations, regulatory considerations in drug product development, and basic issues in method development, the book: Covers a variety of modern methods such as gas chromatography, high performance liquid chromatography, supercritical fluid chromatography, and capillary electrophoresis Deals with the impact of chirality on the biological activity of small and large molecules Provides detailed information on useful chiral stationary phases (CSPs) for HPLC Includes handy information on selection of an appropriate CSP, including mechanistic studies Offers strategies for fast method development with HPLC, SFC, and CE Discusses preparatory methods utilized in the pharmaceutical industry With in-depth discussions of the current state of the field as well as suggestions to assist future developments, Chiral Separation Methods for Pharmaceutical and Biotechnological Products is an essential text for laboratory investigators, managers, and regulators who are involved in chiral separations in the pharmaceutical industry, as well as students preparing for careers in these fields.

Download or read book Enantioselective Synthesis Enantiomeric Separations and Chiral Recognition written by Maria Elizabeth Tiritan and published by MDPI. This book was released on 2020-11-13 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes both fundamental studies and applications in a multidisciplinary research field involving a high diversity of chiral compounds, including commercial substances with industrial applications, pharmaceuticals, and new chiral compounds with promising biological activities.

Download or read book Preparative Liquid Chromatography written by B.A. Bidlingmeyer and published by Elsevier. This book was released on 1987-07-01 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a straightforward approach to isolation and purification problems with a thorough presentation of preparative LC strategy including the interrelationship between the input and output of the instrumentation, while keeping to an application focus.The book stresses the practical aspects of preparative scale separations from TLC isolations through various laboratory scale column separations to very large scale production. It also gives a thorough description of the performance parameters (e.g. throughput, separation quality, etc.) as a function of operational parameters (e.g. particle size, column size, solvent usage, etc.). Experts in the field have contributed a well balanced presentation of separation development strategies from preparative TLC to commercial preparative process with practical examples in a wide variety of application areas such as drugs, proteins, nucleotides, industrial extracts, organic chemicals, enantiomers, polymers, etc.

Download or read book The Use of Liquid Chromatography and Subcritical Fluid Chromatography for Chiral Seperations Using Macrocyclic Chiral Stationary Phases written by Ross Michael Woods and published by . This book was released on 2014 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enantiomeric separations are an essential component of pharmaceutical drug development, not only at the analytical scale, but also to separate usable quantities for further analysis. The field of asymmetric synthesis is also heavily dependent on chromatographic methods to separate and quantitate the results of asymmetric transformations as well as characterize new ligands and catalysts. This dissertation focuses on the use of macrocyclic chiral stationary phases for use in high performance liquid chromatography as well as subcritical fluid chromatography to separate individual enantiomers of molecules of importance to the scientific community. Optimized separation conditions are provided for many of these important analytes, which will expedite the evaluation of their usefulness in a variety of applications. Particular emphasis is put on elucidating the mechanism of interaction between analyte and stationary phase. In chapters two and three, principle component analysis is applied to the chromatographic data to gain better understanding of the factors contributing to retention and enantioselectivity. It was shown that optimized separation conditions are also provided for newly synthesized isochromene and Tröger base derivatives using cyclodextrin and cyclofructan based chiral stationary phases. The fourth chapter provides separation conditions for a variety of novel synthetic biaryl atropisomers, which have the potential to serve as useful ligands in asymmetric transformations as well as possessing antibiotic/antimicrobial properties. Preparative scale separation conditions are also provided allowing for these important analytes to be prepared and evaluated in their enantiomerically pure form. Insight into the mechanism of analyte retention is provided indicating that dipolarity/polarizability is the primary retentive interaction between substituted biaryls and derivatized cyclofructans. Chapter five provided a valuable comparison of commonly used chromatographic conditions for the separation of primary amines using cyclofructan based chiral stationary phases. The effect of various addivies and polar modifiers was investigated and the results indicate that a combination of acidic and basic additives is necessary to obtain optimal separations. The advantages of individual chromatographic modes are also provided. Normal phase separations provided the greatest selectivities at the cost of longer analysis times while modified carbon dioxide mobile phases provided excellent peak profiles and short analysis times. Preparative scale separations are also provided using modified carbon dioxide mobile phases allowing for enantiopure compounds to be prepared in an environmentally friendly manner without the use of petroleum based solvents.