Synthetic study of phomoidride B (CP-263,114); utilization of the oxidopyrylium [5 + 2] cycloaddition.
The highly functionalized core structure of phomoidride B (CP-263,114) was pursued by using intermolecular oxidopyrylium-alkene cyclization as one of the key steps.
Ohmori
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Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan. d1174001@hiroshima.u.ac.jp