Acta Cryst. (2006). E62, o116-o118  [ doi:10.1107/S1600536805040523 ]

1,13-Dimethyl-6H,7H,8H-chromeno[3',4':5,6]pyrano[3,2-c]chromene-6,8-dione

M. I. Choudhary, A. M. Lannang, S. Anjum, H.-K. Fun, D. Lontsi and J. G. Tangmouo

Abstract: The title compound, C₂₁H₁₄O₅, is a pentacyclic chromene derivative. The dihedral angle between the two outer benzene rings is 30.3 (1)°. The pyran and one of the pyranone rings adopt twist-boat conformations. The crystal packing is stabilized by C-HO, C-H and - interactions

Online 10 December 2005

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