Download or read book Progress in the Chemistry of Organic Natural Products 102 written by A. Douglas Kinghorn and published by Springer. This book was released on 2016-07-05 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first contribution reviews the phytochemical, chemical, and biological literature on members of the ingenane class of diterpenoids from their first isolation in 1968 through 2015, highlighting unresolved issues both common to phorboids and specific to ingenol derivatives. The biogenesis of ingenol is discussed in the light of the Jakupovic proposal of a dissection between the formation of the macrocyclic Euphorbia diterpenoids and the phorboids, and the clinical development of ingenol mebutate is chronicled in the light of its “reverse-pharmacology” focus. The second contribution offers a comprehensive view of the chemical wealth and the taxonomic problems currently impeding chemical and biological investigations of the genus Laurencia. It addresses the botanical description and the growth and population dynamics of the genus, as well as its chemical diversity and ecological relations; the secondary metabolites as well as their sources of isolation; and finally the biological activity.

Download or read book Fortschritte der Chemie organischer Naturstoffe Progress in the Chemistry of Organic Natural Products written by and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volumes of this classic series, now referred to simply as "Zechmeister” after its founder, L. Zechmeister, have appeared under the Springer Imprint ever since the series’ inauguration in 1938. The volumes contain contributions on various topics related to the origin, distribution, chemistry, synthesis, biochemistry, function or use of various classes of naturally occurring substances ranging from small molecules to biopolymers. Each contribution is written by a recognized authority in his field and provides a comprehensive and up-to-date review of the topic in question. Addressed to biologists, technologists, and chemists alike, the series can be used by the expert as a source of information and literature citations and by the non-expert as a means of orientation in a rapidly developing discipline.

Download or read book Progress in the Chemistry of Organic Natural Products 99 written by A. Douglas Kinghorn and published by . This book was released on 2014-08-31 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progress in the Chemistry of Organic Natural Products 104 written by A. Douglas Kinghorn and published by Springer. This book was released on 2017-01-25 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first contribution describes apolar and polar molecular fossils and, in particular biomarkers, along the lines usually followed in organic chemistry textbooks, and points to their bioprecursors when available. Thus, the apolar compounds are divided in linear and branched alkanes followed by alicyclic compounds and aromatic and heterocyclic molecules, and, in particular, the geoporphyrins. The polar molecular fossils contain as functional groups or constituent units ethers, alcohols, phenols, carbonyl groups, flavonoids, quinones, and acids, or are polymers like kerogen, amber, melanin, proteins, or nucleic acids. The final sections discuss the methodology used and the fundamental processes encountered by the biomolecules described, including diagenesis, catagenesis, and metagenesis. The second contribution covers the distribution of phthalides in nature and the findings in the structural diversity, chemical reactivity, biotransformations, syntheses, and bioactivity of natural and semisynthetic phthalides.

Download or read book Progress in the Chemistry of Organic Natural Products 109 written by A. Douglas Kinghorn and published by Springer Nature. This book was released on 2019-10-21 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises three reviews. The first describes isolation, structure determination, syntheses, and biochemistry of the low molecular weight compounds of the secretion of exocrine glands of termies with emphasis to pheromones and defensive compounds. The second review describes recent studies on isolation and structure elucidation of bioactive compounds involved in the life cycle and determination of the molecular mechanisms of the developmental events observed in higher plants. The third contribution reports on the current body of knowledge of African propolis, with a particular emphasis on its chemistry and biological activity.

Download or read book Progress in the Chemistry of Organic Natural Products 113 written by A Douglas Kinghorn and published by Springer Nature. This book was released on 2021-04-16 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, chemical studies are described mainly from literature reports appearing since 2000, inclusive of investigations performed by the present authors, on the diversity in secondary metabolites of Ligularia growing in the Hengduan Mountains area of China, focusing on eremophilane sesquiterpenoids and other metabolites. More than 100 Ligularia species and their related genera in the plant family Senecioneae plants (Cremanthodium, Cacalia, Senecio, and others) grow in East Asia. For many years, researchers have studied the chemical constituents of these plants, and terpenoids, flavonoids, steroids, alkaloids, and aromatic compounds have been isolated. Among these, in particular, numerous sesquiterpenoids were reported. Within this book terpenoids and aromatic compounds (total 1049), both previously unknown and known, are presented. Finally, genetic studies and synthesis investigations are briefly reviewed.

Download or read book Fortschritte Der Chemie Organischer Naturstoffe written by H. Grisebach and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progress in the Chemistry of Organic Natural Products 110 written by A. Douglas Kinghorn and published by Springer Nature. This book was released on 2019-10-16 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book summarizes important aspects of cheminformatics that are relevant for natural product research. It highlights cheminformatics tools that help to match natural products with their respective biological targets or off-targets, and discusses the potential and limitations of this approach.

Download or read book Fortschritte der Chemie organischer Naturstoffe Progress in the Chemistry of Organic Natural Products written by A. Andersen and published by Springer Science & Business Media. This book was released on 1997-05-28 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volumes of this classic series, now referred to simply as "Zechmeister" after its founder, L. Zechmeister, have appeared under the Springer Imprint ever since the series' inauguration in 1938. The volumes contain contributions on various topics related to the origin, distribution, chemistry, synthesis, biochemistry, function or use of various classes of naturally occurring substances ranging from small molecules to biopolymers. Each contribution is written by a recognized authority in his field and provides a comprehensive and up-to-date review of the topic in question. Addressed to biologists, technologists, and chemists alike, the series can be used by the expert as a source of information and literature citations and by the non-expert as a means of orientation in a rapidly developing discipline.

Download or read book Fortschritte der Chemie Organischer Naturstoffe Progress in the Chemistry of Organic Natural Products 29 written by and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fortschritte der Chemie Organischer Naturstoffe Progress in the Chemistry of Organic Natural Products Progr s dans la Chimie des Substances Organiques Naturelles written by and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fortschritte der Chemie Organischer Naturstoffe Progress in the Chemistry of Organic Natural Products written by N. H. Andersen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mit Beiträgen zahlreicher Fachwissenschaftler

Download or read book Progress in the Chemistry of Organic Natural Products 105 written by A. Douglas Kinghorn and published by Springer. This book was released on 2017-02-13 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first contribution reviews the occurrence of xanthine alkaloids in the plant kingdom and the elucidation of the caffeine biosynthesis pathway, providing details of the N-methyltransferases, belonging to the motif B' methyltransferase family which catalyze three steps in the four step pathway leading from xanthosine to caffeine. The second contribution in this book provides a background on the molecule and related compounds and update knowledge on the most recent advances in Iboga alkaloids. The third contribution presents a comprehensive analysis of frequently occurring errors with respect to 13C NMR spectroscopic data and proposes a straightforward protocol to eliminate a high percentage of the most obvious errors.

Download or read book Progress in the Chemistry of Organic Natural Products 107 written by A. Douglas Kinghorn and published by Springer. This book was released on 2018-09-03 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first review describes examples of very promising compounds discovered from plants acquired from Africa, Southeast Asia, the Americas, and the Caribbean region with potential anticancer activity. These include plant secondary metabolites of the diphyllin lignan, penta[b]benzofuran, triterpenoid, and tropane alkaloid types. The second review presents 40 more erythrinan alkaloids, which were either new or were missed out in the last major reviews, bringing to a total of 154 known erythrinan alkaloids known to date. The reported pharmacological activities of the new and known alkaloids showed a greater bias towards central nervous system and related activities. Other prominent activities reported were antifeedant or insecticidal, cytotoxicity/antitumor/anticancer/estrogenic, antiprotozoal, antiinflammatory, antioxidant, antifungal and antiviral activities.

Download or read book Fortschritte der Chemie organischer Naturstoffe Progress in the Chemistry of Organic Natural Products Vol 93 written by Mahendra Sahai and published by Springer Science & Business Media. This book was released on 2010-06-17 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignans, by convention, are a group of natural products that are formed by linking two phenylpropanoid units (C C units) by oxidative coupling. Most importantly, in 6 3 a lignan, two (C C units) are bound through the central carbon of their side chains, 6 3 0 i. e. the 8 and 8 positions (1, 2). The occurrence of C C -dimers, linked at sites other 6 3 0 than the 8–8 positions, is also known and these compounds have been termed neolignans (3, 4). As these two groups of compounds have close structural as well as biosynthetic relationships, they are often associated together and incorporated under the general term “lignan” (5). The diverse structural categorization of true lignans and of a few neolignans is presented in Fig. 1. Through the years, several review articles or books covering different facets of lignans, including their ch- istry (6, 7), biogenesis (8), synthesis (9), and biological activities (10) have been published. Enduring research for the investigation of secondary metabolites of plants has evidenced some compounds that are biogenetically related to true lignans or neolignans but bear some features not discerned in conventional lignans. These compounds or groups of compounds have been termed as “non-conventional lignans”, and include coumarinolignans, ?avonolignans, and stilbenolignans. The non-conventional lignans, like the conventional ones, have two C C units linked 6 3 together but have additional structural features to place them also under the category of coumarins, ?avonoids, or stilbenes.

Download or read book Progress in the Chemistry of Organic Natural Products Vol 94 written by A. Douglas Kinghorn and published by Springer Science & Business Media. This book was released on 2011-08-12 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three reviews cover the advances in the chemistry and biology of withanolides over the last 16 years, review the chemistry and biology of the rocaglamide-type derivatives and related compounds, with emphasis on their structural diversity, biosynthesis, pharmacological significance and total synthesis, and summarize the extensive chemistry and biology studies on a natural product, which have resulted in a novel therapy approved worldwide.

Download or read book Fortschritte der Chemie organischer Naturstoffe Progress in the Chemistry of Organic Natural Products written by S. Hunek and published by Springer Science & Business Media. This book was released on 2001-02-22 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volumes of this classic series, now referred to simply as "Zechmeister” after its founder, L. Zechmeister, have appeared under the Springer Imprint ever since the series’ inauguration in 1938. The volumes contain contributions on various topics related to the origin, distribution, chemistry, synthesis, biochemistry, function or use of various classes of naturally occurring substances ranging from small molecules to biopolymers. Each contribution is written by a recognized authority in his field and provides a comprehensive and up-to-date review of the topic in question. Addressed to biologists, technologists, and chemists alike, the series can be used by the expert as a source of information and literature citations and by the non-expert as a means of orientation in a rapidly developing discipline.