Acta Cryst. (2005). E61, o189-o191  [ doi:10.1107/S160053680403346X ]

Methyl 5-hydroxy-2-(2-hydroxy-6-methoxy-4-methylbenzoyl)-3-methoxybenzoate

R.-G. Shu, H.-L. Zhu and R.-X. Tan

Abstract: The title compound, C₁₈H₁₈O₇, is an anti-Helicobacter pylori compound. It was characterized from the chloroform-methanol (1:1) extract of Fusarium sp. IFB-121, an endophytic fungus in Quercus variabilis. The two benzene rings form a dihedral angle of 79.0  (2)° and intramolecular hydrogen bonds keep the phenolic hydroxy and carbonyl groups coplanar with one of the aromatic rings. The strong intermolecular hydrogen-bond contacts are consistent with the high melting point of the compound.

Online 24 December 2004

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