Volume 124, Issue 38 pp. 9812-9816
Zuschrift

Enantioselective Total Synthesis of the Reported Structures of (−)-9-epi-Presilphiperfolan-1-ol and (−)-Presilphiperfolan-1-ol: Structural Confirmation and Reassignment and Biosynthetic Insights

Allen Y. Hong

Allen Y. Hong

Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)

Search for more papers by this author
Prof. Brian M. Stoltz

Corresponding Author

Prof. Brian M. Stoltz

Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)

Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)Search for more papers by this author
First published: 22 August 2012
Citations: 21

The authors thank NIH-NIGMS (R01GM080269-01), Roche, Abbott Laboratories, Amgen, Boehringer Ingelheim, the Gordon and Betty Moore Foundation, and Caltech for awards and financial support. Prof. Suzana G. Leitão (Universidade Federale do Rio de Janeiro) generously provided NMR spectra for natural 2. Dr. Lawrence Henling is gratefully acknowledged for X-ray crystallographic structure determination. The Bruker KAPPA APEXII X-ray diffractometer used in this study was purchased through an NSF CRIF:MU award to Caltech (CHE-0639094). Prof. Sarah Reisman, Dr. Scott Virgil, Dr. Douglas C. Behenna, Robert J. Ely and Fang Gao (Boston College), and Jessica Y. Wu (Harvard University) are acknowledged for helpful discussions and suggestions. Dr. David VanderVelde and Dr. Scott Ross are acknowledged for NMR assistance.

Graphical Abstract

Wenn epi doch nicht epi ist! Die erste Totalsynthese der beschriebenen Strukturen von 9-epi-Presilphiperfolan-1-ol und Presilphiperfolan-1-ol wurde abgeschlossen. Schlüsselschritte sind die katalytische asymmetrische Alkylierung eines neuartigen Dien-Elektrophils mit anschließender C2-Ringkontraktion und eine intramolekulare Diels-Alder-Cycloaddition zur Bildung des dichten tricyclischen Kerns. Die Synthesestudie führt zur Strukturrevision des Presilphiperfolan-1-ols (siehe Schema).

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.