Download or read book Isolation Structure Elucidation and Biological Evaluation of Natural Products from Plants and Fungi written by Xiaoning Wang and published by . This book was released on 2012 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural products have provided considerable value for drug discovery over the past half-century. Nearly four fifth of drugs were natural products or inspired by natural compounds. Bioactive secondary metabolites isolated from natural source, either fungal or terrestrial, are relatively safer for human health and the environment and can serve as drug or as drug leads for the development of synthetic or semi-synthetic analogs. Natural products have also been successfully used in agriculture as plant growth regulators, signal transductions, fungicides, herbicides and tranquilizers. In our continued efforts to identify bioactive compounds, seventy-seven plant and fungal extracts were evaluated using a direct-bioautography assay coupled with three Colletotrichum species to detect antifungal metabolites. Three crude extracts that showed significant antifungal activity were selected for further bioassay-guided isolation. Various chromatographic techniques including preparative thin layer chromatography, vacuum liquid chromatography, flash chromatography, high pressure liquid chromatography and over pressure layer chromatography were utilized to isolate biologically active secondary metabolites from natural products of fungal and plant origin. Among all the techniques, over pressure layer chromatography were first adopt here for preparative isolation of natural products. It turned out to be a rapid and efficient method of exploiting co-migrating bioactive metabolites, and eleven compounds including two new molecules were isolated by using this technique. The structure of the isolated compounds was elucidated through various spectroscopic methods, including high-resolution mass spectrometry, one and two-dimensional nuclear magnetic resonance spectroscopy. Finally, the isolated compound was submitted for several in vitro assays, including antifungal, herbicidal, antibacterial, and cannabinoid and opioid receptor agonist assays. Some compounds showed potent antifungal activity against strawberry pathogens and one compound also showed good herbicidal and antibacterial activity. These compounds could be exploited as drug leads to potential agrochemicals or pharmaceuticals. All the promising drug leads have been submitted for antifungal testing using 24-well strawberry leaf disc assay.
Download or read book Biological Activity of Natural Products written by Jaroslava Švarc-Gajić and published by Nova Science Publishers. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many thousands of years ago, humans were introduced to the toxicants of minerals and plants of microbial origin, and since that time, natural bioactive compounds have been used in traditional medicine for treating different health conditions, but also as aphrodisiacs and as a means of suicide or murder. Modern medicine acknowledges natural bioactive compounds as valuable medicinal sources for both diagnostic and curative purposes. Natural compounds serve as templates for the production of new drugs with improved pharmacological properties. This book explains the term bioactivity and deals with the bioactive compounds of plants, animals, microbial and marine origin. Their use by traditional medicinal approach, as well as by modern medicine is further elaborated. Both beneficial and toxic properties of different chemical classes, including alkaloids, peptides, terpenoids, bioactive amines etc., are described. Their isolation at the industrial scale is presented through several technological processes which are explained in detail for several compound classes. The research explains how natural sources can be exploited my modern and traditional medicine, and presents the risks and benefits associated with their use. In addition, a new approach to studying bioactivity, that includes computational modelling and softwares for in silico description and prediction, is explained. A chemometric approach to studying bioactivity is demonstrated through several models given for some natural bioactive compounds and their derivatives.
Download or read book Structure Elucidation and Biological Evaluation of Active Constituents Isolated from Three Medicinal Plants written by Sandra Apers and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Products Analysis written by Vladimir Havlicek and published by John Wiley & Sons. This book was released on 2014-10-13 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights analytical chemistry instrumentation and practices applied to the analysis of natural products and their complex mixtures, describing techniques for isolating and characterizing natural products. • Applies analytical techniques to natural products research – an area of critical importance to drug discovery • Offers a one-stop shop for most analytical methods: x-ray diffraction, NMR analysis, mass spectrometry, and chemical genetics • Includes coverage of natural products basics and highlights antibacterial research, particularly important as efforts to combat drug resistance gain prominence • Covers instrumental techniques with enough detail for both current practitioners and beginning researchers
Download or read book Bioactive Compounds from Natural Sources written by Corrado Tringali and published by CRC Press. This book was released on 2003-09-02 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in obtaining biologically active compounds from natural sources has recently spiked due to their low toxicity, complete biodegradability, availability from renewable sources, and in most cases, low cost. Taking an interdisciplinary approach, Bioactive Compounds from Natural Sources: Isolation, Characterization, and Biological Properties covers general methods and main topics in the research field of bioactive natural products. The book describes general screening methods, modern HPLC hyphenated techniques, and NMR methods in the structural elucidation of compounds and devotes individual chapters to specific topics of research. Surveys on compounds displaying important pharmacological activities are presented in chapters devoted to Mexican medicinal plants, anti-tumor drugs of natural origin, cancer chemopreventive flavonoids, and metabolites displaying anti-HIV, antioxidative, antimalarial, and anti-inflammatory activity. The final chapters are devoted to representative examples of research into marine metabolites: immunomodulating marine glycolipids and surveys of bioactive compounds from marine opisthobranchs and Japanese soft corals. With its focus on modern approaches to the isolation of biologically active natural products, this book encourages interdisciplinary work among chemists, pharmacologists, biologists, botanists, and agronomists with an interest in bioactive natural products.
Download or read book Plant derived Natural Products written by Anne E. Osbourn and published by Springer Science & Business Media. This book was released on 2009-07-07 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plants produce a huge array of natural products (secondary metabolites). These compounds have important ecological functions, providing protection against attack by herbivores and microbes and serving as attractants for pollinators and seed-dispersing agents. They may also contribute to competition and invasiveness by suppressing the growth of neighboring plant species (a phenomenon known as allelopathy). Humans exploit natural products as sources of drugs, flavoring agents, fragrances and for a wide range of other applications. Rapid progress has been made in recent years in understanding natural product synthesis, regulation and function and the evolution of metabolic diversity. It is timely to bring this information together with contemporary advances in chemistry, plant biology, ecology, agronomy and human health to provide a comprehensive guide to plant-derived natural products. Plant-derived natural products: synthesis, function and application provides an informative and accessible overview of the different facets of the field, ranging from an introduction to the different classes of natural products through developments in natural product chemistry and biology to ecological interactions and the significance of plant-derived natural products for humans. In the final section of the book a series of chapters on new trends covers metabolic engineering, genome-wide approaches, the metabolic consequences of genetic modification, developments in traditional medicines and nutraceuticals, natural products as leads for drug discovery and novel non-food crops.
Download or read book Classics in Spectroscopy written by Stefan Berger and published by John Wiley & Sons. This book was released on 2009-04-13 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analytik von Naturstoffen, die jeder kennt: Die Autoren dieses Bandes beschränken sich nicht auf die nüchterne Abhandlung von Daten und Verfahren, sondern erzählen die wahrhaft inspirierenden Geschichten jedes ihrer Moleküle. Dabei ist der rein methodische Teil so ausführlich und exakt beschrieben, dass der Band hervorragend für Lehre und Studium geeignet ist. Übungsaufgaben mit Lösungen und das attraktive Layout machen das Buch zu einem Muss für jeden Organiker und Spektroskopiker und die, die es werden wollen.
Download or read book Natural Products Isolation written by Satya D. Sarker and published by Springer Science & Business Media. This book was released on 2008-02-05 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term “natural products” spans an extremely large and diverse range of chemical compounds derived and isolated from biological sources. Our interest in natural products can be traced back thousands of years for their usefulness to humankind, and this continues to the present day. Compounds and extracts derived from the biosphere have found uses in medicine, agriculture, cosmetics, and food in ancient and modern societies around the world. Therefore, the ability to access natural products, understand their usefulness, and derive applications has been a major driving force in the field of natural product research. The first edition of Natural Products Isolation provided readers for the first time with some practical guidance in the process of extraction and isolation of natural products and was the result of Richard Cannell’s unique vision and tireless efforts. Unfortunately, Richard Cannell died in 1999 soon after completing the first edition. We are indebted to him and hope this new edition pays adequate tribute to his excellent work. The first edition laid down the “ground rules” and established the techniques available at the time. Since its publication in 1998, there have been significant developments in some areas in natural product isolation. To capture these developments, publication of a second edition is long overdue, and we believe it brings the work up to date while still covering many basic techniques known to save time and effort, and capable of results equivalent to those from more recent and expensive techniques.
Download or read book Foye s Principles of Medicinal Chemistry written by Thomas L. Lemke and published by Lippincott Williams & Wilkins. This book was released on 2008 with total page 1406 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sixth Edition of this well-known text has been fully revised and updated to meet the changing curricula of medicinal chemistry courses. Emphasis is on patient-focused pharmaceutical care and on the pharmacist as a therapeutic consultant, rather than a chemist. A new disease state management section explains appropriate therapeutic options for asthma, chronic obstructive pulmonary disease, and men's and women's health problems. Also new to this edition: Clinical Significance boxes, Drug Lists at the beginning of appropriate chapters, and an eight-page color insert with detailed illustrations of drug structures. Case studies from previous editions and answers to this edition's case studies are available online at thePoint.
Download or read book Handbook of Medicinal Plants written by Zohara Yaniv and published by CRC Press. This book was released on 2005-07-25 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stay up-to-date with this important contribution to rationalized botanical medicine The Handbook of Medicinal Plants explores state-of-the-art developments in the field of botanical medicine. Nineteen experts from around the world provide vital information on natural products and herbal medicines—from their earliest relevance in various cultures to today’s cutting-edge biotechnologies. Educated readers, practitioners, and academics of natural sciences will benefit from the text’s rich list of references as well as numerous tables, figures, and color photographs and illustrations. The Handbook of Medicinal Plants is divided into three main sections. The first section covers the use of herbal medicines throughout history in China, Australia, the Americas, the Middle East, and the Mediterranean, emphasizing the need for future medicinal plant research. The second section discusses the latest technologies in production and breeding, crop improvement, farming, and plant research. The third section focuses on groundbreaking advances in the medicinal application of therapeutic herbs. In the Handbook of Medicinal Plants, you will gain new knowledge about: recent research and development in Chinese herbal medicine modern methods of evaluating the efficacy of medicinal plants by “screening” the newest developments of in vitro cultivation prevention and therapy of cancer and other diseases using medicinal plants the challenges and threats to medicinal plant research today trends in phytomedicine in the new millennium The Handbook of Medicinal Plants demonstrates the global relevance of sharing local knowledge about phytomedicines, and highlights the need to make information on plants available on a worldwide basis. With this book, you can help meet the challenge to find scientifically rationalized medicines that are safer, more effective, and readily available to patients from all walks of life.
Download or read book Medicinal Plants and Fungi Recent Advances in Research and Development written by Dinesh Chandra Agrawal and published by Springer. This book was released on 2017-11-03 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the latest international research on different aspects of medicinal plants and fungi. Studies over the last decade have demonstrated that bioactive compounds isolated from medicinal fungi have promising antitumor, cardiovascular, immunomodulatory, anti-allergic, anti-diabetic, and hepatoprotective properties. In the light of these studies, the book includes chapters (mostly review articles) by eminent researchers from twelve countries across the globe working in different disciplines of medicinal plants and fungi. It discusses topics such as the prevention of major neurodegenerative and neurotoxic mechanisms by Centella asiatica; the medicinal properties and therapeutic applications of several mushrooms species found in different parts of the world; and fungal endophytes as a source of bioactive metabolites including anticancer and cardioprotective agents. There are also chapters on strategies for identifying bioactive secondary metabolites of fungal origin; the use of genomic information to explore the biotechnological potential of medicinal mushrooms; and solid state fermentation of agro-industrial and forestry residues for the production of medicinal mushrooms. It is a valuable resource for the researchers, professionals and students working in the area of medicinal plants and fungi.
Download or read book Introduction to Natural Products Chemistry written by Rensheng Xu and published by CRC Press. This book was released on 2011-07-20 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural products chemistry-the chemistry of metabolite products of plants, animals and microorganisms-is involved in the investigation of biological phenomena ranging from drug mechanisms to gametophytes and receptors and drug metabolism in the human body to protein and enzyme chemistry. Introduction to Natural Products Chemistry has collected the
Download or read book The Role of Natural Products in Drug Discovery written by J. Mulzer and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural Products have been important sources of useful drugs from prehistoric times to the present. This book gives an overview about this field and provides important recent contributions to the discovery of new drugs generated by research on natural products. Total synthesis of natural products with interesting biological activities is paving the way for the preparation of new and improved analogs. The methods of combinatorial chemistry permit the selection of the best drug from a large number of candidates. Beyond synthesis and evaluation of organic molecules a number of new bioorganic methods are coming to the fore and will be discucced in this isue of the ERnst schering Research Foundation workshop proceedings.
Download or read book Medicinal Natural Products written by Paul M. Dewick and published by John Wiley & Sons. This book was released on 2002-01-03 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide covers classes of natural products in medicine, whether derived from plants, micro-organisms or animals. Structured according to biosynthetic pathway, it is written from a chemistry-based approach.
Download or read book Green Extraction of Natural Products written by Farid Chemat and published by John Wiley & Sons. This book was released on 2016-03-11 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extraction processes are essential steps in numerous industrial applications from perfume over pharmaceutical to fine chemical industry. Nowadays, there are three key aspects in industrial extraction processes: economy and quality, as well as environmental considerations. This book presents a complete picture of current knowledge on green extraction in terms of innovative processes, original methods, alternative solvents and safe products, and provides the necessary theoretical background as well as industrial application examples and environmental impacts. Each chapter is written by experts in the field and the strong focus on green chemistry throughout the book makes this book a unique reference source. This book is intended to be a first step towards a future cooperation in a new extraction of natural products, built to improve both fundamental and green parameters of the techniques and to increase the amount of extracts obtained from renewable resources with a minimum consumption of energy and solvents, and the maximum safety for operators and the environment.
Download or read book Endophytic Fungi written by Evelyn Hughes and published by Nova Science Publishers. This book was released on 2016-12-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Endophytic fungi are important biotechnological tools because they produce many secondary metabolites. However, to access this important source of bioactive molecules, it is essential to explore the diversity of endophytic fungi and catalog their species richness in different ecosystems. This book reviews the diversity, characterisation and biocontrol of endophytic fungi.
Download or read book WHO Global Report on Traditional and Complementary Medicine 2019 written by World Health Organization and published by World Health Organization. This book was released on 2019-05-16 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is structured in five parts: national framework for traditional and complementary medicine (T&CM); product regulation; practices and practitioners; the challenges faced by countries; and finally the country profiles. Apart from the section on practices and practitioners the report is consistent with the format of the report of the first global survey in order to provide a useful comparison. The section on practices and practitioners which covers providers education and health insurance is a new section incorporated to reflect the emerging trends in T&CM and to gather new information regarding these topics at a national level. All new information received has been incorporated into individual country profiles and data graphs. The report captures the three phases of progress made by Member States; that is before and after the first WHO Traditional Medicine Strategy (1999?2005) from the first global survey to the second global survey (2005?2012) and from the second survey to the most recent timeline (2012?2018).
