Pharmacology of Drug Stereoisomers


Book Description

The book is devoted to an important aspect of pharmacology and pharmaceutical chemistry, i.e. the significance of stereoisomerism of drugs for their biological effect from the point of view of their pharmacokinetics, pharmacodynamics and toxicology. The authors review the landmarks in the development of stereochemistry and stereopharmacology. Present-day IUPAC terminology is discussed; general issues of stereoisomerism are considered including separation of racemic mixtures and asymmetric synthesis of isomers, methods of quantifying the isomers of a drug in biological material. The authors put special emphasis on general problems of the influence of stereoisomerism on pharmacological and adverse effects of drugs. A classification of drugs based on stereochemical properties of their isomers is proposed. Possibilities of interaction of stereoisomers in racemic mixtures are discussed. A considerable portion of the book is devoted to pharmacological action of the main groups of drugs whose structure includes asymmetric atoms (that is, drugs with several isomers). Detailed attention is paid to advisability of developing single isomer drugs and to the specifics of their study at the stage of preclinical and clinical trials.







Stereochemical Aspects of Drug Action and Disposition


Book Description

This book aims to guide and inspire drug researchers as they enter the 21st century. Stereochemistry is an essential dimension in pharmacology and should be understood as such by all drug researchers whatever their background. When used as probes or medicines, stereoisomeric drugs offer invaluable insights or innovative therapeutic strategies. The book spans the subject from the molecular to the clinical. The first section on chemical aspects contains chapters on chemical synthesis, analysis, natural products, chiral stability (racemezation) and physical properties. The second section is on experimental pharmacology, with chapters on drug-receptor interactions, chiral recognition, ion channels, and molecular toxicology. The third section focuses on drug disposition, with chapters on absorption, distribution, protein binding, metabolism and elimination. The final section is dedicated to regulatory and clinical aspects.




Drug Stereochemistry


Book Description

Drug Stereochemistry: Analytical Methods and Pharmacology, Third Edition covers all aspects of chiral drugs from academic, governmental, industrial, and clinical perspectives, reflecting the many advances in techniques and methodology. Topics include:The use of enzymes in the synthesis and resolution of enantiometrically pure compounds in drug disc




Chirality and Biological Activity of Drugs


Book Description

This book brings together the theoretical, commercial, and practical aspects of chirality and biological activity of drugs and acts as a ready reference for the effects of enantiomers of drug substances.




Chirality in Drug Design and Synthesis


Book Description

Chirality in Drug Design and Synthesis is a collection of papers that discusses the property of asymmetry in the structural and synthetic chemistry of natural products, including the significance of chirality in medicinal chemistry. These papers examine the need for the preparation and study of pure enantiomers of chiral drug substances and their mechanism of interaction with enzymes and receptors. These papers also investigate the techniques in studying these interactions, as well as analyze the methods for their synthesis in enantiomerically pure form. One paper discusses the pharmacological and pharmacokinetic analyses made that point to the differences in the activity and disposition of enantiometric pairs. Another paper reviews the implications of the neglect of stereoselectivity at the different levels during the examination process of racemic drugs. Since no general guidelines exists for the development of drugs with chiral centers, one paper suggests a case-by-case approach in evaluating the safety and efficacy of drugs, particularly as regards how isomers differ in their effects. This collection is suitable for the pharmacologist, medicinal chemists, toxicologists, mechanistic chemists and synthetic organic chemists.




The Impact of Stereochemistry on Drug Development and Use


Book Description

The past fifteen years have seen a revolution in the field of stereochemistry, with breakthrough analytical techniques in enantiomeric separation profoundly affecting drug development and use. This practical reference written by leading researchers focuses on the important roles chirality and stereoisomerism play in drug development efforts--presenting for the first time a comprehensive overview of this rapidly evolving area of pharmacological research. The book explores analytical, pharmacological, and regulatory topics in dealing with the theory and practice of stereochemistry in the pharmaceutical industry today. This exciting, broad-appeal treatment extends from the analytical viewpoint in enantiomeric separation to the regulatory issues involved in the "racemate-versus-enantiomer" debate. The authors include numerous examples and case studies, and integrate material from a wide range of studies, publications, and workshops. The introductory chapters outline the pharmacological effects of stereochemistry, cover stereochemistry in drug metabolism, and discuss problems inherent in the duality of enantiomers--chemically identical yet spatially different molecules. Contributions on the specific aspects of chirality and drug activity explore the toxicological effects of stereoselectivity, illustrate how an understanding of the stereochemical composition of certain drugs can help avoid problems, and offer tips on new clinical applications for existing drugs. A full chapter is devoted to research opportunities in the development of new chirally pure drugs. Other practical research topics range from the preparation of chirally pure compounds to the analytical determination of stereochemical composition, to applications of circular dichroism (CD) spectroscopy. Regulatory issues concerning the development and approval of stereoisomeric drugs are discussed in the final chapters. This section offers an international perspective as well as a historical review of the ongoing debate surrounding regulatory guidelines. Impact of Stereochemistry on Drug Development and Use is an essential reference for medicinal and analytical chemists, pharmacologists, drug metabolism and pharmacokinetic scientists, and personnel of regulatory agencies. It is also a useful text for graduate students in stereochemistry, and for anyone who wants to keep up with the swift pace of change in this dynamic field. Impact of Stereochemistry on Drug Development and Use is an essential reference for medicinal and analytical chemists, pharmacologists, drug metabolism and pharmacokinetic scientists, and personnel of regulatory agencies. It is also a useful text for graduate students in stereochemistry, and for anyone who wants to keep up with the swift pace of change in this dynamic field. IMPACT OF STEREOCHEMISTRY ON DRUG DEVELOPMENT AND USE Twenty-three expert contributions on the "stereochemical revolution" of the last fifteen years--covering analytical, pharmacological, and regulatory topics--show that "drug development can no longer occur without consideration of drug stereochemistry." "We have...come full circle and stand alongside Pasteur in amazement of nature's duality, symmetry and dissymmetry, and its chemical and pharmacological consequences."--from the Preface




Drug Stereochemistry


Book Description

Maintaining and enhancing its focus on key issues in the development, regulatory approval and use of stereoisomeric compounds, this edition continues to cover in detail all aspects of chiral drugs from the academic, governmental, industrial and clinical points of view.;Completely rewritten and updated throughout, Drug Stereochemistry: illustrates current indirect chromatographic methods for the resolution of drug enantiomers; treats the rapidly growing area of enantioselective gas chromatography; discusses the latest in HPLC resolution of enantiomeric drugs; uses verapamil as a model to show how stereoselective pharmacokinetics affect pharmacodynamics; and supplies an in-depth study on the effect of stereoselective plasma protein binding.;This edition offers entirely new chapters that: discuss the recent decisions and present position of the US Food and Drug Administration on the development of stereoisomeric drugs; explicate enzymatic synthesis of stereochemically pure drugs; review the toxicological, pharmacokinetic and pharmacodynamic differences found among stereoisomers; elucidate the stereoselective transport of drugs across epithelia; and give a physician's perspective on the questions and problems caused by stereoisomeric drugs in practice as well as the pharmaceutical industry's collective viewpoint based on a national survey.




Chirality in Drug Research


Book Description

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.