Acta Cryst. (2007). E63, o1282-o1284  [ doi:10.1107/S1600536807005776 ]

(1R*,5R*,7R*,8S*)-3-(3,4-Dihydroxybenzoyl)-4-hydroxy-8-methyl-1,5,7-tris(3-methyl-2-butenyl)-8-(4-methyl-3-pentenyl)bicyclo[3.3.1]non-3-ene-2,9-dione

B. Ndjakou Lenta, D. T. Noungoue, K. P. Devkota, P. A. Fokou, S. Ngouela, E. Tsamo and N. Sewald

Abstract: The title compound, C₃₈H₅₀O₆, also known as guttiferone A, was isolated from the medicinal plant Symphonia globulifera. It is a benzophenone derivative where one aryl group is derivatized to give a bicyclic system which has two prenyl groups attached to the bridgehead. One of the cyclohexane rings in the bicyclic system is in a chair form, while the other has a distorted half-chair conformation. In addition to an intramolecular O-HO hydrogen bond, intermolecular O-HO hydrogen bonds link molecules into one-dimensional chains.

Online 14 February 2007

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