By W. SMIT, A. BOCHKOV, R. CAPLE
Книга natural Synthesis natural SynthesisКниги Химия Автор: W. Smit, A. Bochkov, R. Caple Год издания: 1998 Формат: pdf Издат.:Royal Society of Chemistry Страниц: 477 Размер: 29,3 ISBN: 0854045449 Язык: Английский eighty five (голосов: 1) Оценка:Reader's review:This ebook is à strong guide for beginning natural chemist. i've got learn it in 2001 in Russian translation, since it used to be written through Russian chemists. the trendy points of natural synthesis and plenty of achievements of a technology of final years are mirrored. ordinarily, the ebook can be precious who desires to get familiar with natural synthesis.
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Extra info for Organic synthesis: the science behind the art
To any given, however complex, compound one may add one more carbon unit, thereby obtaining a new compound with which one can carry out the same operation, etc. Modification of a molecule can be achieved in a variety of routes and in every single case a novel entity is generated. The multiplicity of ways of increasing the complexity of a molecule and the number of variations grows roughly in proportion to the number of atoms already existing in the molecule. An analogy to the multitude of possible structures of organic compounds can be found in a tree-like structure with an infinite number of branches.
Some of them, like 57 and 58,25dshowed activity in in vitro tests even higher than that of artemisinin itself. 15 These types of investigations are usually referred to as the ‘syntheses of potentially useful compounds’. In all tasks with an ambiguous answer, a chemist is trained to think not only in terms of a single target structure, but rather in terms of a series of related compounds. A synthetic plan should be designed, then, with special attention paid to the elaboration of fairly general methods, adaptable for the preparation of a broad set of compounds with strategic variations in structural parameters.
Thus, no competitors to the acting ‘queen’ appear and her power stays unchallenged to the end of her active life (when the queen substance is no longer emitted). The strict hierarchy of ant colonies gives a well-defined and absolutely rigid specialization to every member. Their remarkable ability to ‘organize’ collective efforts such as building anthills, conducting army raids for food or laborers, or cultivating fungus or mealybugs (‘domesticated animals’), are all features to be admired. Unambiguous evidence attests to the importance of chemical communication as one of the most significant links between individual insects.
Organic synthesis: the science behind the art by W. SMIT, A. BOCHKOV, R. CAPLE