This useful reference focuses on the currently available toolbox of bio-catalysed reductions of C=O, C=C and formal C=N bonds to show which transformations can be reliably used in manufacturing processes and which still require improvements. Following an introductory chapter, chapters 2-4 present the synthetic strategies that are currently available for the reduction of C=C and C=O bonds and for reductive amination, by means of whole-cell catalysts and isolated enzymes. Chapters 5-7 go on to describe the improvements achieved thus far, illustrating the current versatility of enzymes in organic synthesis. Chapters 8-12 present the improvements brought about by the optimization of reaction conditions, and the use of particular synthetic sequences. The final chapter describes practical applications of bio-reductions for the synthesis of active pharmaceutical ingredients. With its excellent and comprehensive overview, this book will be of great interest to those working in academia and industry. From the contents: * Development of Sustainable Biocatalyzed Reduction Processes for Organic Chemists * Reductases: From Natural Diversity to Biocatalysis and Emerging Enzymatic Activities. * Synthetic Strategies Based on C=C Bioreductions * Synthetic Strategies Based on C=O Bioreductions * Development of Novel Enzymes for the Improved Reduction of C=C Double Bonds * Development of Novel Enzymes for the Improved Reduction of C=O Double Bonds * Synthetic Applications of Aminotransferases * Strategies for Cofactor Regeneration in Biocatalyzed Reductions * Effects of Solvent System and Substrate Loading in Bioreduction * Perspectives in the Use of In-Situ Product Removal (ISPR) Techniques in Bioreductions * Multi-Enzymatic Cascade Reactions Based on Reduction Processes * Relevant Practical Applications of Bioreduction Processes in the Synthesis of Active Pharmaceutical Ingredients

Presents the most effective catalytic reactions in use today, with a special focus on process intensification, sustainability, waste reduction, and innovative methods This book demonstrates the importance of efficient catalytic transformations for producing pharmaceutically active molecules. It presents the key catalytic reactions and the most efficient catalytic processes, including their significant advantages over compared previous methods. It also places a strong emphasis on asymmetric catalytic reactions, process intensification (PI), sustainability and waste mitigation, continuous manufacturing processes as enshrined by continuous flow catalysis, and supported catalysis. Active Pharmaceutical Ingredients in Synthesis: Catalytic Processes in Research and Development offers chapters covering: Catalysis and Prerequisites for the Modern Pharmaceutial Industry Landscape; Catalytic Process Design - The Industrial Perspective; Hydrogenation, Hydroformylation and Other Reductions; Oxidation; ; Catalytic Addition Reactions; Catalytic Cross-Coupling Reactions; Catalytic Metathesis Reactions; Catalytic Cycloaddition Reactions: Coming Full-Circle; Catalytic Cyclopropanation Reactions; Catalytic C-H insertion Reactions; Phase Transfer Catalysis; and Biocatalysis. -Provides the reader with an updated clear view of the current state of the challenging field of catalysis for API production -Focuses on the application of catalytic methods for the synthesis of known APIs -Presents every key reaction, including Diels-Alder, CH Insertions, Metal-catalytic coupling-reactions, and many more -Includes recent patent literature for completeness Covering a topic of great interest for synthetic chemists and R&D researchers in the pharmaceutical industry, Active Pharmaceutical Ingredients in Synthesis: Catalytic Processes in Research and Development is a must-read for every synthetic chemist working with APIs.

A comprehensive overview of synthetic strategies for nonaromatic nitrogen heterocycles Nitrogen heterocycles are extremely widely distributed in nature, as well as in synthetic substances found in pharmaceuticals, agrochemicals, and materials chemistry. With new structures and medicines that include these structures emerging yearly, and a vast new journal literature to describe them, anyone who wants to be effective in R&D needs to easily access a synthesis of the latest research. This state-of-the-art survey explores recent developments in the most widely used reactions, as well as completely new ones. Highlights the major modern synthetic methods known to obtain nonaromatic nitrogen heterocycles, and their practical applications Topics include enantioselective synthesis and catalysis, photocatalysis, biocatalysis, microwave-assisted synthesis, reactions of oximes and nitrones, and ionic liquids Discusses how to synthesize rings of specific sizes Covers sustainable synthetic approaches for obtaining salts Whether you are using nonaromatic nitrogen compounds as an academic researcher, a synthetic chemist in industry, or an advanced student, this book is an essential, up-to-date resource to support your work.

This volume is a complete review of the cutting-edge scientific evidence about the isolation, identification, bioactivity and molecular analysis of the biologically active peptides (BAPs) obtained from several underutilized grains. It provides a general review of current and new technologies in isolating and bioprospecting BAPs before going into the details of 11 grains. Amaranth, quinoa, millet, buckwheat, sorghum, lupin, mung bean, chickpea, broad bean, cocoa bean and chia are extensively discussed in dedicated chapters. Additionally, these chapters provide information about the characteristics of the crop, its main varieties, traditional uses, economic importance, nutritional aspects, structure and chemical composition of the grains, as well as the classification and distribution of the grain protein fractions. Moreover, the advances in the analytical techniques used for the concentration, purification and molecular characterization of BAPs are described. The impact of BAPs in the promotion of health is highlighted, as well as their potential incorporation as promising ingredients in the development of functional foods, nutraceuticals and cosmeceuticals. Finally, the main findings related to the potential antiviral and anti-COVID-19 activities of BAPs derived from underutilized grains are described. This reference will be of interest for academics, professionals and researchers focused in food science, biotechnology, pharmacology and agriculture, and to professionals involved in the research and development of natural products, pharmaceuticals and cosmeceuticals.

The book consists of a brief introduction, a foreward provided by professor Danishefsky of Columbia University, and about 14 - 16 chapters, each written by one or two eminent scholars/authors describing their recent research in the area of either domino reactions or intramolecular rearrangements in carbohydrate chemistry. Three or four chapters will be reviews. The domino (cascade, tandem) reactions are always intramolecular. They are usually very fast, clean and offer highly complex structures in a one pot process. Intramolecular rearrangements offer very similar advantages and often lead to highly complex products as well. Although many recently isolated carbohydrates fulfill various sophisticated functions, their structures are often very complex. The editors cover the broadest scope of novel methodologies possible. All the synthetic and application aspects of domino/cascade reactions are explored in this book. A second theme that will be covered is intramolecular rearrangement, which is also fast, stereoselective, and often constitutes one or more steps of domino / cascade process. Selected examples of intramolecular rearrangements are presented. Together, both processes offer an elegant and convenient approach to the synthesis of many complex molecules, which are normally difficult to synthesize via alternative routes. It appears that domino and intramolecular rearrangements are ideally suited to synthesize certain specific modified monosaccharides. What is particularly important is that both processes are intermolecular and almost always yield products with very well-defined stereochemistry. This high definition is absolutely crucial when synthesizing advanced, modified mono and oligosaccharides. The choice of contributors reflects an emphasis on both therapeutic and pharmacological aspects of carbohydrate chemistry.

Established in 1960, Advances in Heterocyclic Chemistry is the definitive serial in the area—one of great importance to organic chemists, polymer chemists and many biological scientists. Written by established authorities in the field, the comprehensive reviews combine descriptive chemistry and mechanistic insight and yield an understanding of how the chemistry drives the properties. - One of great importance to organic chemists, polymer chemists and many biological scientists - Written by established authorities in the field, the comprehensive reviews combine descriptive chemistry and mechanistic insight and yield an understanding of how the chemistry drives the properties

The solvent-free approach provides green and alternative synthetic methods for obtaining diverse bioactive heterocycles. The solvent is frequently the primary component of synthetic protocol and contributes to significant waste. Additionally, its removal processes are energy intensive and substantial. This book explores different solvent-free procedures for efficiently synthesising heterocyclic analogues of immense biological importance and other applications.