Our efforts toward the construction of the carbocylic core of cortistatin A via an enyne-ene metathesis are disclosed. Interestingly, an attempted S N2 inversion of a secondary mesylate in our five-membered D-ring piece gave a product with retention of stereochemistry. © 2010 The Royal Society of Chemistry.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-11-006-02
Acknowledgements: C. B. thanks the Schweizerischer Nationalfonds (SNF) for a fellowship. This publication is based on work supported by Award No. KUS-11-006-02, made by King Abdullah University of Science and Technology (KAUST). Additionally, the authors thank Abbott, Amgen, Boehringer-Ingelheim, Bristol-Myers Squibb, Merck, Sigma-Aldrich and Caltech for generous funding. Mr Lawrence Henling and Dr Michael Day are gratefully acknowledged for X-ray crystallographic structural determination. The Bruker KAPPA APEXII X-ray diffractometer was purchased via an NSF CRIF:MU award to the California Institute of Technology, CHE-0639094. Dr David VanderVelde and Dr Scott Ross are acknowledged for NMR assistance. Dr Scott Virgil is acknowledged for helpful discussions.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.