Acta Cryst. (2005). E61, o3349-o3350  [ doi:10.1107/S1600536805029387 ]

Epivernadol diacetate

J. L. Koul, S. Koul, S. C. Taneja, M. Schürmann, H. Preut and M. Spiteller

Abstract: In the crystal structure of the title compound, (4aR,5R,6S,7S,8aS)-methyl 8a-ethenyloctahydro-5-acetoxy-7-{[2-(acetoxymethyl)-1-oxo-2-propenyl]oxy}-,4-bis(methylene)-3-oxo-1H-2-benzopyran-6-acetate, C₂₄H₂₈O₁₀, the molecule has a cis configuration at the junction of the two six-membered rings and not a trans configuration as was assigned on the basis of NMR data in solution [Asaka et al. (1977). Phytochemistry, 16, 1838-1839].

Online 21 September 2005

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