Acta Cryst. (2006). E62, o5472-o5474  [ doi:10.1107/S1600536806046228 ]

(1S*,2S*,5S*,9S*,10S*,11R*,18R*)-9,10,18-Trihydroxy-12,12-dimethyl-6-methylene-17-oxapentacyclo[7.6.2.1^5,8.0^1,11.0^2,8]octadecane-7,15-dione

H. Shi, M.-L. Huang and Y.-P. Lü

Abstract: The title compound, C₂₀H₂₆O₆, was prepared from the natural diterpenoid oridonin and is composed of one five-membered ring with an envelope conformation and five six-membered rings, four with boat conformations and one with a twist-boat conformation. The molecules are assembled into chains via hydrogen bonding.

Online 8 November 2006

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