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Communication | Special issue | Vol 77, No. 1, 2009, pp.173-177
Published online, 5th June, 2008
DOI: 10.3987/COM-08-S(F)13
Concise Assembly of the BCD Ring Part of Ginkgolide C via a Novel Cyclization Reaction

Ayaka Hibi, Kazutaka Takeda, and Masahiro Toyota*

*Department of Chemistry, Graduate School of Science, University of Osaka Prefecture, Sakai, Osaka 593-8531, Japan


Efforts to synthesize a 6-oxatricyclo[]undecane ring system are described. A novel Pd(II)-promoted oxidative cyclization of the lactone ester constructs the tricyclic core of ginkgolide C.