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Communication | Special issue | Vol 86, No. 1, 2012, pp.127-132
Published online, 21st June, 2012
DOI: 10.3987/COM-12-S(N)21
A CONCISE SYNTHESIS OF THE AB-RING FRAGMENT OF (−)-GAMBIEROL

Haruhiko Fuwa,* Kazuaki Hirota, and Makoto Sasaki*

*Graduate School of Life Sciences, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577, Japan

Abstract

We describe herein a concise synthesis of the AB-ring fragment of gambierol, wherein silver(I) trifluoromethanesulfonate-catalyzed 6-endo cyclization of a hydroxy ynone was exploited for the formation of the A-ring.