Abstract
The title compound, C23H22O6·CH3OH, has an essentially planar xanthone nucleus fused to a chromene ring which adopts a sofa conformation. The 3-methylbut-2-enyl substituent is axially attached to the xanthone ring system, with a (+)-anticlinal conformation. The crystal structure is stabilized by O—H⋯O and C—H⋯O intramolecular and intermolecular interactions.
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