The continued successes of large- and small-scale genome sequencing projects are increasing the number of genomic targets available for drug d- covery at an exponential rate. In addition, a better understanding of molecular mechanisms—such as apoptosis, signal transduction, telomere control of ch- mosomes, cytoskeletal development, modulation of stress-related proteins, and cell surface display of antigens by the major histocompatibility complex m- ecules—has improved the probability of identifying the most promising genomic targets to counteract disease. As a result, developing and optimizing lead candidates for these targets and rapidly moving them into clinical trials is now a critical juncture in pharmaceutical research. Recent advances in com- natorial library synthesis, purification, and analysis techniques are not only increasing the numbers of compounds that can be tested against each specific genomic target, but are also speeding and improving the overall processes of lead discovery and optimization. There are two main approaches to combinatorial library production: p- allel chemical synthesis and split-and-mix chemical synthesis. These approaches can utilize solid- or solution-based synthetic methods, alone or in combination, although the majority of combinatorial library synthesis is still done on solid support. In a parallel synthesis, all the products are assembled separately in their own reaction vessels or microtiter plates. The array of rows and columns enables researchers to organize the building blocks to be c- bined, and provides an easy way to identify compounds in a particular well.

Traditionally, the search for new compounds from natural products has been a time- and resource-intensive process. The recent application of combinatorial methods and high-throughput synthesis has allowed scientists to generate a range of new molecular structures from natural products and observe how they interact with biological targets. Combinato

During the course of evolution, an imbalance was created between the rate of vertebrate genetic adaptation and that of the lower forms of living organisms, such as bacteria and viruses. This imbalance has given the latter the advantage of generating, relatively quickly, molecules with unexpected structures and features that carry a threat to vertebrates. To compensate for their weakness, vertebrates have accelerated their own evolutionary processes, not at the level of whole organism, but in specialized cells containing the genes that code for antibody molecules or for T-cell receptors. That is, when an immediate requirement for molecules capable of specific interactions arose, nature has preferred to speed up the mode of Darwinian evolution in pref- ence to any other approach (such as the use of X-ray diffraction studies and computergraphic analysis). Recently, Darwinian rules have been adapted for test tube research, and the concept of selecting molecules having particular characteristics from r- dom pools has been realized in the form of various chemical and biological combinatorial libraries. While working with these libraries, we noticed the interesting fact that when combinatorial libraries of oligopeptides were allowed to interact with different selector proteins, only the actual binding sites of these proteins showed binding properties, whereas the rest of the p- tein surface seemed "inert. " This seemingly common feature of protein- having no extra potential binding sites--was probably selected during evolution in order to minimize nonspecific interactions with the surrounding milieu.

The new time-saving revolution in drug discovery. Combinatorial chemistry, a method for synthesizing millions of chemical compounds much faster than usual, is becoming one of the most useful technical tools available to chemists and researchers working today. Using current advances in computer and laboratory techniques, combinatorial chemistry has freed professionals from the drudgery of piecemeal experimental work and opened new creative possibilities for experimentation. Combinatorial Chemistry: Synthesis and Application details critical aspects of the technique, featuring the work of some of the world's leading chemists, many of whom played a key role in its development. Including examples of both solution-phase and solid-phase approaches as well as the full complement of organic chemistry technologies currently available, the book describes: * Concepts and terms of combinatorial chemistry * Polymer-supported synthesis of organic compounds * Macro beads as microreactors * Solid-phase methods in combinatorial chemistry * Encoded combinatorial libraries, including Rf-encoding of synthesis beads * Strategies for combinatorial libraries of oligosaccharides * Combinatorial libraries of peptides, proteins, and antibodies using biological systems. While combinatorial chemistry originated in peptide chemistry, this volume has deliberately focused on nonpeptide organic applications, illustrating the technique's wide uses. Combinatorial Chemistry introduces organic, medicinal, and pharmaceutical chemists as well as biochemists to this exciting, cost-effective, and practical technique, which has unlocked creative potential for the next millennium.

With combinatorial chemistry millions of organic compounds can be produced simultaneously, quickly, and in most cases by automated procedures. These compound libraries are a cost-effective resource for the pharmaceutical industry in their search for biologically active lead structures. Furthermore simultaneous parallel synthesis of single peptides and peptide libraries solve the problem of the worldwide increasing demand for peptides. The synthetic methods described here in detail contribute to a forward-looking technology that has a high impact for industrial and academic research. Fast and efficient analytical techniques are essential for using the complicated product mixtures and detecting by-products. Various synthetic approaches and technologies, mass spectrometry, and screening assays are discussed extensively. This book is a must and an indispensible source of information for every researcher in this rapidly developing field, which spans organic synthesis, biochemistry, biotechnology, pharmaceutical, medicinal, and clinical chemistry.

The story of success goes on and on - with a new book on combinatorial chemistry, edited by Gunther Jung! Combinatorial chemistry is a proven time- and resource-saving synthetic method of outstanding importance for industrial processes. Compound libraries help to save time and money, especially in the search for new drugs, and therefore play a pivotal role in solving the problem of the worldwide increasing demand for new and more active drugs. Not only substances, which are of interest for pharmaceutical chemistry, but also materials, catalysts, and biomolecules such as DNA or oligosaccharides are readily available with high structural diversities. The broad scope of combinatorial sciences is reflected by this book, edited by Gunther Jung: The synthetic methods discussed range from solid-phase to solution-phase synthesis, from preparations of small molecules such as amines or alcohols to those of complex biomolecules. Feasible methods, efficient techniques, new trends in automation, and state-of-the-art fast instrumental analytical and screening methods are presented with many practical tips and tricks for everybody working in combinatorial chemistry. This is the book written by specialists for specialists and for everyone aspiring to become an insider! It is an indispensible source of information for researchers working in organic synthesis, catalysis, biochemistry, and biotechnology, pharmaceutical and clinical chemistry, material sciences, and analytical chemistry.

A unique, integrated look at solid-phase synthesis and advances in combinatorial chemistry and technologies The last decade has seen a rapid expansion in combinatorial technologies, a field where chemistry disciplines intersect with automation, statistics, and information science, as well as certain biological disciplines. Reflecting these multidisciplinary trends, this new work provides a comprehensive overview of the most important aspects of solid-phase synthesis (SPS), combinatorial chemistry, and related combinatorial technologies. It clearly demonstrates how SPS and combinatorial chemistry have extended their application from the pharmaceutical arena to new areas, including biotechnology, material sciences, catalysis, and agrochemical industries, and explores in detail strategies for planning, designing, preparing, and testing of combinatorial libraries in various disciplines. Designed to meet the needs of both experienced combinatorial chemists and newcomers to the field, Solid-Phase Synthesis and Combinatorial Technologies: * Surveys the most recent developments in SPS and combinatorial chemistry * Explains the entire process, from determining the need for a library to the details necessary for synthesis of the library * Discusses choice of format, size, and the rationale behind the design of each synthetic step * Surveys the analytical techniques and the purification methods used to characterize and purify combinatorial libraries * Employs a large number of examples to illustrate important concepts * Includes problems geared toward applying acquired knowledge and designing the steps to SPS/library synthesis * Describes the quality control and activity screening of combinatorial libraries for various applications * Features a detailed bibliography of more than 1,700 relevant sources