Biostrategies in total synthesis: Symbioimines and Platencin - Varseev, Georgy;Maier, Martin
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In this book main approaches toward construction of complex polycyclic core structures of biomolecules are discussed. Successful implementation of the chosen strategies for the synthesis of symbioimines and platencine is shown. A Lewis acid induced intramolecular Diels-Alder (IMDA) reactions are used as the key steps in the formation of symbioimine and (+)-neosymbioimine iminium alkaloids. The enantioselective total synthesis of (+)-neosymbioimine was accomplished in 18 steps from (-)-(S)-citronellol utilizing an organocatalytic -oxidation. All double bonds of Diels-Alder substrate were made…mehr

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Produktbeschreibung
In this book main approaches toward construction of complex polycyclic core structures of biomolecules are discussed. Successful implementation of the chosen strategies for the synthesis of symbioimines and platencine is shown. A Lewis acid induced intramolecular Diels-Alder (IMDA) reactions are used as the key steps in the formation of symbioimine and (+)-neosymbioimine iminium alkaloids. The enantioselective total synthesis of (+)-neosymbioimine was accomplished in 18 steps from (-)-(S)-citronellol utilizing an organocatalytic -oxidation. All double bonds of Diels-Alder substrate were made in a stereoselective manner by Wittig-type reactions. A concise formal synthesis of platencin was based on an efficient oxygen-mediated palladium-catalyzed cycloalkenylation to form a bicyclo[3.2.1]octane, and a deoxygenative rearrangement of tosylhydrazone to construct the bicyclo[2.2.2]octane in 17.5 % total yield for 13 steps from commercially available compounds.
Autorenporträt
The author of this work was born in Russia in 1982. He studied chemistry in Moscow State University, and obtained diploma in 2003. In 2004 he started PhD work in Eberhard-Karls University of Tuebingen, Germany, and in 2009 has afforded summa cum laude for his PhD work. He also has several publications of his PhD research in top chemistry journals.