Название: Organic Chemistry, 2 ed. ISBN 9780199270293 ISBN: 0199270295 ISBN-13(EAN): 9780199270293 Издательство: Oxford Academ Рейтинг: Цена: 11562.00 р. Наличие на складе: Поставка под заказ.
Описание: Inspiring and motivating students from the moment it published, Organic Chemistry has established itself in just one edition as the students` choice of organic chemistry text. Its explanatory, mechanistic, evidence-based approach makes it perfect for fostering a true understanding of the subject.
Автор: Li Название: Total Synthesis of Natural Products ISBN: 3642340644 ISBN-13(EAN): 9783642340642 Издательство: Springer Рейтинг: Цена: 9782.00 р. 13974.00-30% Наличие на складе: Есть (1 шт.) Описание: Written by experts in organic chemistry, this book covers a range of natural products, from steroids to alkaloids. Coverage details the biological and pharmacological properties of the natural product and outlines current total synthesis procedures.
Plants produce secondary metabolites that humans harness for their own benefit. About half of drugs currently in clinical use are based on these chemicals found in nature. Chemistry of Natural Products covers secondary metabolites present in medicinal plants and their biosynthesis, biological activities, and isolation and separation techniques. This book is ideal for researchers in the areas of biochemistry, medicine, and pharmacology.
Автор: Brahmachari Название: Bioactive Natural Products - Chemistry and Biology ISBN: 3527337946 ISBN-13(EAN): 9783527337941 Издательство: Wiley Рейтинг: Цена: 24386.00 р. Наличие на складе: Поставка под заказ.
Автор: Kimberly Geoghegan Название: Selectivity in the Synthesis of Cyclic Sulfonamides ISBN: 3319364316 ISBN-13(EAN): 9783319364315 Издательство: Springer Рейтинг: Цена: 13059.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: We discovered an interesting regioselectivity in an intramolecular Heck reaction, which we studied for a series of substrates that are unbiased in terms of the size of the newly formed ring, where very high levels of selectivity in relation to the new carbon-carbon bond are typically observed.
Описание: Diese Ubersieht soll die wesentliche Literatur uber Ubichinon und einige chemisch nahe v: erwandte naturliche Chinone bis etwa Oktober 1961 referieren. Der Name Ubichinon (englisch Ubiquinone) wurde von MORTON und Mitarb. (II3) fUr eine Substanzgruppe der allgemeinen Formel (I) vorgeschlagen. In MORTONS Arbeitskreis wurde die betreffende Substanz anfanglich als "Substanz SA" bezeichnet (Io8). Wie sieh aus spateren o II H3CO", / CH3 3112 4 116 CH 3 /"'/'" I H3CO III (CH2-CH=C-CH2)n-H o (1.) Untersuchungen ergeben hat, waren nicht aIle als SA bezeichneten Substanzen untereinander identisch; die verschiedenen Praparate unter- schieden sich in der Lange der Polyisopren-seitenkette oder durch Ersatz einer der beiden Methoxylgruppen durch Athoxyl (vgl. SS. 78 und 101 ff.). Nach einem Vorschlag von MORTON und Mitarb. (III) sollen die ver- schiedenen von (I) sieh ableitenden naturlichen und synthetischen Ubichinone, die sich nur in der Anzahl der Isoprenreste in der Seiten- kette unterscheiden, in Anlehnung an die in der Vitamin-K-Reihe ubliche Nomenklatur, dadurch gekennzeichnet werden, daB die Anzahl der C-Atome in der Seitenkette hinter dem Namen Ubichinon in Klammern angegeben wird; z. B. Ubiehinon-(50} fUr das Derivat mit IoIsopren- resten usw. Bisher wurden in der Natur die Glieder mit n = 6, 7, 8, 9 und 10 aufgefunden.
Описание: Substances belonging to this group of organic compounds are wi, lely distributed in Nature, being found in plants, both higher and lower fungi and, upto the present time, in one animal source, sheep wool-fat. For a long- time no real differentiation was possible between the tetra- and penta- cyclic triterpenes and the sterols. Then the two latter became disting- uishable by their selenium. -dehydrogenation products, i. e., picene and naphthalene derivatives from the pentacyclic triterpenes and DIELS' hydrocarbon from the sterols. It is now apparent that those compounds yielding predominantly I: 2: 8-trimethylphenanthrene on dehydro- genation represent yet another class, and this property is regarded as typical of the tetracyclic triterpenes. The group contains both C and C 30 3l compounds and, although the latter fall outside RUZICKA'S strict definition of triterpenes (I42), it seems desirable to permit this deviation. Members with thirty-two carbon atoms may well be discovered in due course. In a most- valuable account of the triterpenes written in I949, JEGER. (II3) was able to summarize all that was known about the tetra- cyclic group in a very small compass. Most of the work discussed in the present article has been published during the last five years and in that time the structures of some twenty compounds have been elucidated. Of outstanding importance is the revelation of close structural relation- ships tQ the steroids, and the presence of C and C side-chains, skeletally 8 9 identical with those of cholesterol and ergosterol.
Автор: Atta-Ur-Rahman Название: Studies in Natural Products Chemistry: Volume 72 ISBN: 0128239441 ISBN-13(EAN): 9780128239445 Издательство: Elsevier Science Рейтинг: Цена: 38739.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
Studies in Natural Products Chemistry, Volume 72 covers the synthesis or testing and recording of the medicinal properties of natural products, providing cutting-edge accounts on fascinating developments in the isolation, structure elucidation, synthesis, biosynthesis and pharmacology of a diverse array of bioactive natural products. Natural products in the plant and animal kingdom offer a huge diversity of chemical structures that are the result of biosynthetic processes that have been modulated over the millennia through genetic effects.
With the rapid developments in spectroscopic techniques and accompanying advances in high-throughput screening techniques, it has become possible to isolate and then rapidly determine the structures and biological activity of natural products, hence the importance of this book.
Автор: Dewan S. Bhakuni; D.S. Rawat Название: Bioactive Marine Natural Products ISBN: 9048168759 ISBN-13(EAN): 9789048168750 Издательство: Springer Рейтинг: Цена: 26120.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Bioactive Marine Natural Products is the first book available that covers all aspects of bioactive marine natural products. The book covers various aspects of marine natural products and it is hoped that all the major classes of bioactive compounds are included.
Описание: 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.
ООО "Логосфера " Тел:+7(495) 980-12-10 www.logobook.ru
