Received 15 June 2009
The title compound, C24H32O5·C2H4O2, is a derivative of abietic acid. The two fused and unbridged cyclohexane rings have chair conformations and the anhydride ring is planar. Of the other three six-membered rings, two have boat conformations and one has a twist-boat conformation. The crystal structure is stabilized by intermolecular O-HO and C-HO hydrogen bonds.
For general background, see: McCoy (2000); Schweizer et al. (2003); Savluchinske-Feio et al. (2007). For the crystal structure of a similar compound, see: Pan et al. (2006). For standard bond-length data, see: Allen et al. (1987).
Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: WN2334 ).
This work was supported by the President of the Chinese Academy of Forestry Foundation (CAFYBB2008009).
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