Enantioselective Total Synthesis of the Diterpene (+)-Cubitene†
Dr. Kristina Simon
Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig (Germany) http://www.oc.tu-bs.de/lindel
Search for more papers by this authorM. Sc. Johannes Wefer
Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig (Germany) http://www.oc.tu-bs.de/lindel
Search for more papers by this authorDr. Elisabeth Schöttner
Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig (Germany) http://www.oc.tu-bs.de/lindel
Search for more papers by this authorCorresponding Author
Prof. Dr. Thomas Lindel
Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig (Germany) http://www.oc.tu-bs.de/lindel
Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig (Germany) http://www.oc.tu-bs.de/lindelSearch for more papers by this authorDr. Kristina Simon
Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig (Germany) http://www.oc.tu-bs.de/lindel
Search for more papers by this authorM. Sc. Johannes Wefer
Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig (Germany) http://www.oc.tu-bs.de/lindel
Search for more papers by this authorDr. Elisabeth Schöttner
Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig (Germany) http://www.oc.tu-bs.de/lindel
Search for more papers by this authorCorresponding Author
Prof. Dr. Thomas Lindel
Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig (Germany) http://www.oc.tu-bs.de/lindel
Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106 Braunschweig (Germany) http://www.oc.tu-bs.de/lindelSearch for more papers by this authorFinancial support by the Deutsche Forschungsgemeinschaft (DFG, Li 597/4–1) and the Fonds der Chemischen Industrie (FCI, stipend to J.W.) is gratefully acknowledged. We also thank Merck KGaA (Germany) for chromatography materials. BASF AG and Honeywell Specialty Chemicals Seelze GmbH are thanked for the donation of solvents.
Graphical Abstract
From termite soldier's secretions: The enantioselective total synthesis of the diterpene (+)-cubitene is described. The route is characterized by the cyclization of a carvone-derived C20 allylphosphate with SmI2, followed by fragmentation to the twelve-membered ring. As a result, perfect stereocontrol of the isopropenyl-substituted positions is achieved.
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