Methyl 4-Hydroxy-3-[4-methoxy-2-(methoxymethyleneoxy)phenyl]-2-{[4-methoxy-2-(methoxymethyleneoxy)phenyl]methyl}-5-oxo-2,5-dihydrofuran-2-carboxylate

The title compound, C₂₅H₂₈O₁₁, is formed by a homoaldol condensation of methyl [4-methoxy-2-(methoxymethylenoxy)phenyl]pyruvate followed by lactonization. The structure consists of a butenolide ring substituted at the 2 position with an arylmethyl and a methyl carboxylate group, at the 3 position with an aryl group, and at the 2 position with a hydroxyl group. The solid-state structure contains a hydrogen-bonded cyclic dimer. The hydrogen bonds are formed between the enol H atom of one molecule and the lactone carbonyl of another.

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