Enzymes In Organic Media
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| Author | : Ari Koskinen |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 338 |
| Release | : 1995-12-31 |
| Genre | : Science |
| ISBN | : 9780751402599 |
The outlook of organic synthesis has changed many times during its tractable history. The initial focus on the synthesis of substances typical of living matter, exemplified by the first examples of organic chemistry through the synthesis of urea from inorganic substances by Liebig, was accepted as the birth of organic chemistry, and thus also of organic synthesis. Although the early developments in organic synthesis closely followed the pursuit of molecules typical in nature, towards the end of the 19th century, societal pressures placed higher demands on chemical methods appropriate for the emerging age of industrialization. This led to vast amounts of information being generated through the discovery of synthetic reactions, spectroscopic techniques and reaction mechanisms. The basic organic functional group transformations were discovered and improved during the early part of this century. Reaction mechanisms were elucidated at a growing pace, and extremely powerful spectroscopic tools, such as infrared, nuclear magnetic resonance and mass spectrometry were introduced as everyday tools for a practising organic chemist. By the 1950s, many practitioners were ready to agree that almost every molecule could be syn thesized. Some difficult stereochemical problems were exceptions; for example Woodward concluded that erythromycin was a "hopelessly complex target". This frustration led to a hectic phase of development of new and increasingly more ingenious protecting group strategies and functional group transformations, and also saw the emergence of asymmetric synthesis.
| Author | : Giacomo Carrea |
| Publisher | : John Wiley & Sons |
| Total Pages | : 328 |
| Release | : 2008-04-09 |
| Genre | : Science |
| ISBN | : 3527621733 |
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.
| Author | : Evgeny N. Vulfson |
| Publisher | : Humana |
| Total Pages | : 0 |
| Release | : 2010-11-19 |
| Genre | : Technology & Engineering |
| ISBN | : 9781617372568 |
Enzymatic catalysis has gained considerable attention in recent years as an efficient tool in the preparation of natural products, pharmaceuticals, fine chemicals, and food ingredients. The high selectivity and mild reaction con- tions associated with enzymatic transformations have made this approach an attractive alternative in the synthesis of complex bioactive compounds, which are often difficult to obtain by standard chemical routes. However, the maj- ity of organic compounds are not very soluble in water, which was traditi- ally perceived as the only suitable reaction medium for the application of biocatalysts. The realization that most enzymes can function perfectly well under nearly anhydrous conditions and, in addition, display a number of useful properties, e. g. , highly enhanced stability and different selectivity, has d- matically widened the scope of their application to the organic synthesis. Another great attraction of using organic solvents rather than water as a reaction solvent is the ability to perform synthetic transformations with re- tively inexpensive hydrolytic enzymes. It is worth reminding the reader that in vivo, the synthetic and hydrolytic pathways are catalyzed by different enzymes. However, elimination of water from the reaction mixture enables the “reversal” of hydrolytic enzymes and thus avoids the use of the expensive cofactors or activated substrates that are required for their synthetic count- parts.
| Author | : Cheanyeh Cheng |
| Publisher | : John Wiley & Sons |
| Total Pages | : 719 |
| Release | : 2022-02-03 |
| Genre | : Science |
| ISBN | : 1118995155 |
Enzyme-Based Organic Synthesis An insightful exploration of an increasingly popular technique in organic chemistry In Enzyme-Based Organic Synthesis, expert chemist Dr. Cheanyeh Cheng delivers a comprehensive discussion of the principles, methods, and applications of enzymatic and microbial processes for organic synthesis. The book thoroughly explores this growing area of green synthetic organic chemistry, both in the context of academic research and industrial practice. The distinguished author provides a single point of access for enzymatic methods applicable to organic synthesis and focuses on enzyme catalyzed organic synthesis with six different classes of enzyme. This book serves as a link between enzymology and biocatalysis and serves as an invaluable reference for the growing number of organic chemists using biocatalysis. Enzyme-Based Organic Synthesis provides readers with multiple examples of practical applications of the main enzyme classes relevant to the pharmaceutical, medical, food, cosmetics, fragrance, and health care industries. Readers will also find: A thorough introduction to foundational topics, including the discovery and nature of enzymes, enzyme structure, catalytic function, molecular recognition, enzyme specificity, and enzyme classes Practical discussions of organic synthesis with oxidoreductases, including oxidation reactions and reduction reactions Comprehensive explorations of organic synthesis with transferases, including transamination with aminotransferases and phosphorylation with kinases In-depth examinations of organic synthesis with hydrolases, including the hydrolysis of the ester bond Perfect for organic synthetic chemists, chemical and biochemical engineers, biotechnologists, process chemists, and enzymologists, Enzyme-Based Organic Synthesis is also an indispensable resource for practitioners in the pharmaceutical, food, cosmetics, and fragrance industries that regularly apply this type of synthesis.
| Author | : Munishwar N. Gupta |
| Publisher | : Birkhäuser |
| Total Pages | : 229 |
| Release | : 2013-12-01 |
| Genre | : Science |
| ISBN | : 3034884729 |
Extending the range of enzymatic catalysis by using non-aqueous media has now developed into a powerful approach in biochemistry and biotechnology. One peculiar feature which distinguishes it from the conventional enzymology (carried out in aqueous buffers) is that the awareness of different parameters that control and influence the behaviour of enzymes in such environments has emerged rather slowly. Science is about being able to repeat what somebody else has done. Absence of knowledge about such well-defined parameters/fac tors has sometimes made some workers rather cautious and diffident about using this approach in their laboratories. But for this, non-aqueous enzymol ogy would be more widely practised. It is these thoughts that made me feel that the availability of some well-defined protocols for various applications invol ving enzymes in non-aqueous environments would further catalyze the growth of this area. Hence this book, in which each chapter has some protocols in a specific area. The protocols are preceded by brief background material. The early chapters, which are of general importance, concern control of water ac tivity and stabilization via immobilization. Some subsequent chapters provide the protocols for transformations involving lipids and carbohydrates, peptide synthesis, and preparation of chiral compounds. The disproportionate focus on lipases is not a coincidence; this class of enzymes has been used more often than others in non-aqueous enzymology.
| Author | : Thomas Scheper |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 256 |
| Release | : 1999-04 |
| Genre | : Science |
| ISBN | : 9783540655497 |
Isolated enzymes are known as useful for synthesising of complex molecules with more and more large scale applications in recent years. These six reviews show different steps in the development of enzymatic syntheses for useful compounds. Screening of novel enzymes, their biochemical characterisation as well as reaction engineering approaches in order to increase their performance are treated in three papers. Then the use of protein design as a tool for the directed improvement of reactivity and selectivity of biocatalysts is described in two reviews. The supply of sufficient quantities of biocatalysts must not be neglected: fluidized bed adsorption as an emerging technology for the simple and fast purification of biomolecules is presented in the light of its potential in large scale supply of enzyme catalysts.
| Author | : Andrés Illanes |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 398 |
| Release | : 2008-06-19 |
| Genre | : Technology & Engineering |
| ISBN | : 1402083610 |
This book was written with the purpose of providing a sound basis for the design of enzymatic reactions based on kinetic principles, but also to give an updated vision of the potentials and limitations of biocatalysis, especially with respect to recent app- cations in processes of organic synthesis. The ?rst ?ve chapters are structured in the form of a textbook, going from the basic principles of enzyme structure and fu- tion to reactor design for homogeneous systems with soluble enzymes and hete- geneous systems with immobilized enzymes. The last chapter of the book is divided into six sections that represent illustrative case studies of biocatalytic processes of industrial relevance or potential, written by experts in the respective ?elds. We sincerely hope that this book will represent an element in the toolbox of gr- uate students in applied biology and chemical and biochemical engineering and also of undergraduate students with formal training in organic chemistry, biochemistry, thermodynamics and chemical reaction kinetics. Beyond that, the book pretends also to illustrate the potential of biocatalytic processes with case studies in the ?eld of organic synthesis, which we hope will be of interest for the academia and prof- sionals involved in R&D&I. If some of our young readers are encouraged to engage or persevere in their work in biocatalysis this will certainly be our more precious reward.
| Author | : Peter Grunwald |
| Publisher | : Imperial College Press |
| Total Pages | : 1052 |
| Release | : 2009 |
| Genre | : Science |
| ISBN | : 1860947441 |
The book covers the fundamentals of the field of biocatalysis that are not treated in such detail (or even not at all) in existing biocatalysis books or biochemistry textbooks. It of course does not substitute existing biochemistry textbooks but will serve a suitable supplement as it discusses biochemical fundamentals in connection with the respective topics.With focus on the interdisciplinary nature of biocatalysis, the book contains many aspects of fundamental organic chemistry and some of inorganic chemistry as well, which should make it interesting not only for biochemistry but also for chemistry students. An important theme being emphasized in the book is that applied biocatalysis is one of the main prerequisites for a sustainable development.The topics covered ranges from basic enzyme chemistry (biosynthesis, structure, properties, interaction forces, kinetics) to a detailed description of catalytic mechanisms. It covers the fundamentals of the different enzyme classes together with their applications in native and in immobilized state or in the form of whole cells in aqueous as well as non-conventional media. Topics such as catalytic antibodies, nucleic acid catalysts, non-ribosomal peptide synthesis, evolutionary methods, and the design of cells are also included.
| Author | : Chi-Huey Wong |
| Publisher | : Elsevier |
| Total Pages | : 392 |
| Release | : 1994-07 |
| Genre | : Science |
| ISBN | : 9780080359410 |
Covering the recent development in enzymatic organic synthesis, this text focuses on the use of isolated enzymes. It includes a discussion of the characteristics of enzymes as catalysts and different types of chemical transformations.
| Author | : Gonzalo de Gonzalo |
| Publisher | : John Wiley & Sons |
| Total Pages | : 54 |
| Release | : 2021-07-19 |
| Genre | : Science |
| ISBN | : 352734683X |
This reference book originates from the interdisciplinary research cooperation between academia and industry. In three distinct parts, latest results from basic research on stable enzymes are explained and brought into context with possible industrial applications. Downstream processing technology as well as biocatalytic and biotechnological production processes from global players display the enormous potential of biocatalysts. Application of "extreme" reaction conditions (i.e. unconventional, such as high temperature, pressure, and pH value) - biocatalysts are normally used within a well defined process window - leads to novel synthetic effects. Both novel enzyme systems and the synthetic routes in which they can be applied are made accessible to the reader. In addition, the complementary innovative process technology under unconventional conditions is highlighted by latest examples from biotech industry.
