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Alkaloids Chemical And Biological Perspectives

Author: S.W. Pelletier
Publisher: Elsevier
ISBN: 9780080527031
Size: 43.90 MB
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Volume 14 of this series presents three interesting reviews of research on alkaloids. Chapter 1, by Paul L. Schiff, Jr., is a monumental effort, presenting a selective, comprehensive tabular review of research on the bisbenzylisoquinoline alkaloids, with an analysis of the respective alkaloid types. The chapter should serve as a very useful tool for the bench research scientist who is involved in the isolation and elucidation of structures of bisbenzylisoquinoline alkaloids. Moreover, the data in these tables provides the botanical distribution and occurrence (family, genus, species) of the various classes of these alkaloids. The alkaloids are also categorized by their molecular weights and structural types. Chapter 2, by Toh-Seok Kam, is a review of alkaloids derived from Malaysian flora. Malaysia's position near the Equator confers on it a tropical climate characterized by high temperatures, humidity, and rainfall, conditions favorable for plant life that has resulted in a rich flora of about 15,000 species of higher plants. This review concentrates on work published during the past twenty years and where appropriate compares the occurrence of alkaloids with studies of similar plants from countries neighboring to Malaysia, especially Thailand and Indonesia. Chapter 3, by Jie Jack Li, presents a collection of very interesting total syntheses of naturally occurring indole alkaloids where palladium chemistry plays a central role in the syntheses. Five different types of palladium-mediated reactions are treated: (1) oxidative cyclization reactions promoted by palladium (II) species; (2) transmetallation reactions with organoboranes, organostannanes, and organozinc reagents; (3) inter- and intramolecular Heck reactions; (4) reactions with &pgr;-allylpalladium as the intermediate; and (5) reactions using C-N bond formation as the key step for the synthesis.

Alkaloids Chemical And Biological Perspectives

Author: S.W. Pelletier
Publisher: Elsevier
ISBN: 9780080527017
Size: 64.92 MB
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Acronycine, a potent antitumor agent, was discovered in the bark of the small Australian Rutaceous tree, Acronychia baueri Schott. This new work presents a comprehensive survey of the isolation, structure determination, methods of synthesis, and the biological properties of acronycine, as well as an account of natural and synthetic analogues of acronycine, and their biological properties. Solanum alkaloids were reviewed in 1990 and this book surveys the new developments (isolation procedures, structural elucidation methods) and critically updates earlier reviews. In addition it presents the interesting chemistry and synthesis of cyclopeptide alkaloids. These cyclopeptide alkaloids have been isolated from ascidians, sea hares, and cyanobacteria. Also included are reviews of the use of the functionalized lactam, pyroglutamic acid, as a chiral template for the synthesis of alkaloids. The second review examines the on-line coupling of capillary electrophoresis (CE) and mass spectrometry (MS) for the analysis of alkaloid mixtures. Finally a review of oxygenated analogs of the alkaloid Marcfortine for their potent antiparasitic activity is included at the end of this work. Each chapter in this volume has been reviewed by at least one expert in the field. Indexes for both subjects and organisms are provided.

Alkaloids Chemical And Biological Perspectives

Author: S. William Pelletier
Publisher: Springer Science & Business Media
ISBN: 1461229081
Size: 70.53 MB
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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.

Chemistry And Biology

Author:
Publisher: Academic Press
ISBN: 9780080865744
Size: 23.83 MB
Format: PDF
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Chemistry and Biology is a celebration of the outstanding contributions to the field by Professor R.H.F. Manske, who founded the series in 1950. This special volume demonstrates the dramatic changes in alkaloidchemistry since then. It also offers a unique overview of recent developments in major areas of alkaloid chemistry and biology and looks at how these areas will develop in the future. These fourteen contributions are written by many of the leading alkaloid chemists in the world, and thus comprise a unique view of alkaloids and their contributions to the health and well-being of humankind. Indispensable reference work written by leading experts in the field Provides up-to-date, timely reviews on compounds and classes of great interest Covers synthesis, biosynthesis, biology, as well as isolation and structure elucidation An essential research tool for anyone working with alkaloids from a chemical or biological perspective

R Mpp Encyclopedia Natural Products 1st Edition 2000

Author: Burkhard Fugmann
Publisher: Georg Thieme Verlag
ISBN: 3131795514
Size: 32.90 MB
Format: PDF, Docs
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Compiled by German natural products chemist Wolfgang Steglich and his co-editors Burkhard Fugmann and Susanne Lang-Fugmann, RÖMPP Encyclopedia Natural Products provides highly reliable and comprehensive information on the 6,000 most relevant natural substances, including 15,000 cross references and 2,200 formulas. The book contains descriptions of the different substance classes and important analytical methods, comprehensive indices of Latin Species names and molecular formulas as well as a vast amount of cross referencing. It has been compiled by 40 leaders in their respective fields. Written in a clear, consistent style and thoroughly copy edited, this is a must-have reference work for chemists, biochemists working with natural products, researchers in plant protection, pharmacists and medical researchers, biologists working in drug research as well as microbiologists and botanists working on microorganisms, plants or marine organisms, and interested layman.

Alkaloids Secrets Of Life

Author: Tadeusz Aniszewski
Publisher: Elsevier
ISBN: 9780080475332
Size: 76.88 MB
Format: PDF, Kindle
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Alkaloids, represent a group of interesting and complex chemical compounds, produced by the secondary metabolism of living organisms in different biotopes. They are relatively common chemicals in all kingdoms of living organisms in all environments. Two hundred years of scientific research has still not fully explained the connections between alkaloids and life. Alkaloids-Chemistry, Biological Significance, Applications and Ecological Role 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. Within the book several questions that persist in this field of research are approached as are some unresearched areas. The book provides beneficial text for an academic and professional audience and serves as a source of knowledge for anyone who is interested in the fascinating subject of alkaloids. Each chapter features an abstract. Appendices are included, as are a listing of alkaloids, plants containing alkaloids and some basic protocols of alkaloid analysis. * Presents the ecological role of alkaloids in nature and ecosystems * Interdisciplinary and reader friendly approach * Up-to-date knowledge

Alkaloids

Author: S. William Pelletier
Publisher: Wiley-Interscience
ISBN:
Size: 34.82 MB
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For centuries, human inhabitants of Central and South America have poisoned blow darts with alkaloids they extract from the brightly coloured frogs of the rain forests. Volume 4 of

Synthesis Of Medicinal Agents From Plants

Author: Ashish Tewari
Publisher: Elsevier
ISBN: 0081022743
Size: 45.11 MB
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Synthesis of Medicinal Agents from Plants highlights the importance of synthesizing medicinal agents from plants and outlines methods for performing it effectively. Beginning with an introduction to the significance of medicinal plants, the book goes on to provide a historical overview of drug synthesis before exploring how this can be used to successfully replicate and adapt the active agents from natural sources. Chapters then explore the medicinal properties of a number of important plants, before concluding with a discussion of the future of drugs from medicinal plants. Illustrated with real-world examples, it is a practical resource for researchers in this field. In an age of rapid environmental destruction, hundreds of medicinal plants are at risk of extinction from overexploitation and deforestation, limiting the natural resources available for active agent extraction, thereby threatening the discovery of future cures for diseases. Simultaneously, with the increasing population and advances in medical sciences, the demand for drugs is continuously increasing and cannot be met with just plants. The ability to synthetically replicate the active compounds from these plants is essential in creating an ecologically-aware, sustainable future for drug design Includes detailed coverage of therapeutic compound synthesis Uses multiple real-world examples to support content Lays out a sustainable template for the future of developing active agents from natural products