9-Methyl-8,11,12-trioxatricyclo[7.2.1.0^2,7]dodeca-2,4,6-trien-10-one

9-Methyl-8,11,12-trioxatricyclo[7.2.1.0^2,7]dodeca-2,4,6-trien-10-one, C₁₀H₈O₄, was formed as an unexpected product of the reaction between salicylaldehyde and pyruvic acid. The main structural feature is the tricyclic system, which contains an O atom in each of the bridges.

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