The Chemistry and Biology of Isoquinoline Alkaloids

The Chemistry and Biology of Isoquinoline Alkaloids PDF

Author: J.D. Phillipson

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 315

ISBN-13: 3642701280

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Isoquinolines form one of the largest groups of plant alkaloids and they in clude a number of valuable clinical agents such as codeine, morphine, eme tine and tubocurarine. Research into different aspects of isoquinolines con tinues in profusion, attracting the talents of botanists, chemists, bioche mists, analysts, pharmacists and pharmacologists. Many of these aspects are of an interdisciplinary nature, and in April 1984, The Phytochemical Society of Europe arranged a 3-day symposium on The Chemistry and Bi ology of Isoquinoline Alkaloids in order to provide a forum for scientists of differing disciplines who are united by a common interest in this one class of natural product. Each chapter in this volume is based on a lecture given at this symposium. Attempts have been made to make the aims and objectives, experimental findings and conclusions reached, intelligible to scientists of differing backgrounds. The introductory chapter, which is mainly based on a historical discus sion, stresses that plants containing isoquinolines have proved to be both a boon and a curse to mankind. The Opium Poppy, Papaver somniferum, produces the medicinally used alkaloids morphine, codeine, noscapine and papaverine whilst it also continues to provide drugs of abuse, particularly morphine and its readily prepared O,O-diacetyl derivative, heroin. Numer ous other alkaloids have been isolated from other members of the Papaver acea, and a knowledge of their presence and distribution within the various species has proved a useful adjunct to systematic botanical studies.

The Isoquinoline Alkaloids

The Isoquinoline Alkaloids PDF

Author: K. W. Bentley

Publisher: Elsevier

Published: 2014-04-24

Total Pages: 273

ISBN-13: 1483152235

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The Isoquinoline Alkaloids: A Course in Organic Chemistry is a description of the chemical structures of alkaloids. The book discusses the processes for degradation of isoquinoline alkaloids to recognizable compounds such as oxidation and exhaustive methylation. The associated processes in removing the nitrogen atom are also explained. The commonly used Hofmann process and the interpretation of its result are evaluated in the degradation of alkaloids. The cactus ""pellote"" used by Mexican Indians to induce hallucinatory experiences is examined. The active ingredient is identified as mescaline; its composition is analyzed to contain one primary amino and three methoxyl groups. The different syntheses made to duplicate mescaline are described. The structures of morphine, codeine, and thebain, which are all alkaloids of opium, are also analyzed. Another example of a principal alkaloid found in a plant is emetine found in the root of the ipecac. The pharmacological bases of emetine are isolated and noted as emetamine, cephaeline, psychotrine, and O-methylpsychotrine. The text also traces many other structural relationships within the subgroups of the isoquinoline alkaloids. Chemists, students and professors in organic chemistry, and laboratory technicians whose work is related to pharmacology will find this book informative.

The Isoquinoline Alkaloids Chemistry and Pharmacology

The Isoquinoline Alkaloids Chemistry and Pharmacology PDF

Author: Maurice Shamma

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 615

ISBN-13: 0323144500

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The Isoquinoline Alkaloids: Chemistry and Pharmacology presents an overview of the chemistry, biogenesis, spectroscopy, and pharmacology of the isoquinoline alkaloids. This book examines the significant and interesting aspects of alkaloids. Organized into 32 chapters, this book starts with a discussion of the biogenesis of the isoquinolines and the various pharmacological effects of simple tetrahydroisoquinolines that have stimulant and convulsive properties. This text then explores the infrared absorptions, with emphasis on wavelength and frequency. Other chapters include topics on synthesis, degradation, reactions, absolute configuration, as well as on ultraviolet and nuclear magnetic resonance spectroscopy. This book further explores the various methods available for the preparation of simple tetrahydroisoquinolines, including the Bischler–Napieralski, Pictet–Spengler, and phenolic cyclization, as well as the Friedel–Crafts acylation. The last chapter deals with ancistrocladine, which is the first isoquinoline alkaloid found to possess a methyl group. Biochemists and biophysicists will find this book useful.

Handbook of Natural Products Data: Isoquinoline alkaloids

Handbook of Natural Products Data: Isoquinoline alkaloids PDF

Author: Atta-ur- Rahman

Publisher: Elsevier Science & Technology

Published: 1990

Total Pages: 796

ISBN-13:

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Isoquinoline alkaloids represent one of the two largest groups of alkaloids, the other being indole alkaloids. The present volume, which is the third of this series, describes the spectral data of about 700 isoquinoline alkaloids and covers the literature up to 1992. The spectral data of the remaining classes of isoquinoline alkaloids will be published in another volume within a year.The compounds are arranged according to their structural types in various subclasses. Within each subclass they are arranged in order of increasing molecular weight. Compounds in the same subclass and having the same molecular weight are arranged in order of increasing carbon number.The UV, IR, 1 H-NMR and 13 C-NMR spectral data are given in descending orders of magnitude. All &egr values in the UV spectra have been converted to log &egr. The chemical shifts in the 1 H-NMR spectral data are presented in ppm and the chemical shifts in the older data published in &tgr values have been converted to &dgr values to ensure uniformity of format. The protons and carbons to which the data refers have been italicised. If any of the data given is that of a salt (e.g. hydrochloride) then this is indicated in brackets before the data. If the compounds are known by more than one name, the older names are given in brackets after the newer one. Spectral data of simple derivatives of compounds are also reported, but only if the data for acetyl, benzoyl, methyl and ethyl derivatives are given. The numbering systems used are given both at the beginning of each sub-class as well as at the end of the book. Compound, molecular formula, molecular weight, plant sources and compound-type indices are also included which should enhance the utility of the book.

The Alkaloids

The Alkaloids PDF

Author:

Publisher: Elsevier

Published: 2024-05-27

Total Pages: 446

ISBN-13: 0443295557

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The Alkaloids: Chemistry and Biology, Volume 91, the newest release in a series that has covered the topic for more than 60 years, discusses key aspects of alkaloid chemistry, biology and pharmacology. Sections in this release include chapters on Recent Progress in the Chemistry of Naphthylisoquinoline Alkaloids. Provides the latest information on the study of alkaloids Covers alkaloid chemistry, biology, pharmacology, and medical applications Contains more than 80 published volumes in this interesting field of study

The Alkaloids

The Alkaloids PDF

Author: Hans-Joachim Knolker

Publisher: Elsevier

Published: 2023-01-31

Total Pages: 202

ISBN-13: 0443188343

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The Alkaloids, Volume 89, the newest release in a series that has covered the topic for more than 60 years, discusses key aspects of alkaloid chemistry, biology and pharmacology. Sections in this release include chapters on Recent Progress in the Chemistry of Naphthylisoquinoline Alkaloids, The Biological Activities of Quinolizidine Alkaloids, and C NMR Spectral Data and Pharmacological Activities of Aporphine Alkaloids. Provides the latest information on the study of alkaloids Covers alkaloid chemistry, biology, pharmacology and medical applications Contains more than 80 published volumes in this interesting field of study

Alkaloids

Alkaloids PDF

Author: Tadeusz Aniszewski

Publisher: Elsevier

Published: 2015-04-25

Total Pages: 494

ISBN-13: 0444594620

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Alkaloids - Secrets of Life: Alkaloid Chemistry, Biological Significance, Applications and Ecological Role, Second Edition provides knowledge on structural typology, biosynthesis and metabolism in relation to recent research work on alkaloids, considering an organic chemistry approach to alkaloids using biological and ecological explanation. The book approaches several questions and unresearched areas that persist in this field of research. It provides a beneficial text for academics, professionals or anyone who is interested in the fascinating subject of alkaloids. Each chapter features an abstract. Appendices, a listing of alkaloids, and plants containing alkaloids are all included, as are basic protocols of alkaloid analysis. Presents the ecological role of alkaloids in nature and ecosystems interdisciplinary Examines alkaloids from chemistry, biology and ecology viewpoints A single handy reference volume comprehensively reviews the origin of alkaloids and their biological uses Over 80% new information, including new chapters on the ecological role of alkaloids in nature and ecosystems and extraction of alkaloids

Alkaloids: Chemical and Biological Perspectives

Alkaloids: Chemical and Biological Perspectives PDF

Author: S. William Pelletier

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 378

ISBN-13: 1461229081

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Volume 8 of this series presents four timely reviews on alkaloids: Chapter 1 is a magnificent and monumental review of curare, "a group of dart and/or arrow poisons varying in composition and featuring muscle relaxation as their basic pharmacological action." The fascinating history of curare is recounted, beginning with early encounters by the Spanish Conquistadores through its use as arrow poisons by the forest tribes in hunting and warfare, its chemistry, ethnography, botany and pharmacology. A terminal section of this chapter treats the development of modern muscle relaxants. This chapter thus traces how curare-initially only a crude plant extract-has given rise to the widely used and very important neuromuscular blocking agents of today. The precise role of plant secondary metabolites and their interactions with insect herbivores have been focal points for research by chemists, botanists and entomologists for many years. Alkaloids and their glycosides are frequently involved as feeding deterrents. Chapter 2 treats the relationships between the chemistry of alkaloids in host plants and the effects that these compounds may have on insect herbivores. Interestingly, an alkaloid produced by a plant may manifest different effects on different insects.