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Communication | Special issue | Vol 44, No. 1, 1997, pp.143-147
Published online, 1st January, 1970
DOI: 10.3987/COM-96-S50
Synthetic Studies of Forskolin. A Diels-Alder Approach to Corey's Endoperoxide

Hsing-Jang Liu* and Xiao Shang

*Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada

Abstract

An alternative synthesis of Corey’s endoperoxide intermediate (2) leading to forskolin (1) has been effected via a Diels-Alder approach. An interesting feature is the unusual dehydrogenation process 1213 which accompanied the reduction of the mesylate group with zinc and sodium iodide.