Acta Cryst. (2005). E61, o3653-o3655  [ doi:10.1107/S1600536805031971 ]

3,5,7-Trimethoxy-2-phenyl-4H-1-benzopyran-4-one

J.B.-J. Teh, H.-K. Fun, I. A. Razak, N. Boonnak, S. Chantrapromma and C. Karalai

Abstract: The title compound, C₁₈H₁₆O₅, a flavone, was isolated from the rhizomes of Kaempferia parviflora. The phenyl substituent is twisted away from the plane of the benzopyran-4-one ring system by 31.05 (4)°. The crystal structure is stabilized by - stacking interactions between the benzopyran-4-one ring system of inversion-related molecules stacked along the a axis and C-HO interactions between the screw-related molecules.

Online 15 October 2005

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