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. 2008 May 17;64(Pt 6):o1114.
doi: 10.1107/S1600536808014402.

(-)-kolavenic Acid

Julio Zukerman-Schpector, Lucas Sousa Madureira, Gisele B Messiano, Lucia M X Lopes, Edward R T Tiekink

(-)-kolavenic Acid

Julio Zukerman-Schpector et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

In the two, almost identical, mol-ecules in the asymmetric unit of the title compound [systematic name: (E)-3-methyl-5-(1,2,4a,5-tetra-methyl-1,2,3,4,4a,7,8,8a-octa-hydro-naphthalen-1-yl)pent-2-enoic acid], C(20)H(32)O(2), the rings are trans fused. The cyclo-hexane ring has a chair conformation and the cyclo-hexene ring a distorted half-boat conformation. The two independent mol-ecules are connected into a dimer via O-H⋯O hydrogen bonds. The dimers are associated into supra-molecular chains along c via C-H⋯O contacts.

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Figures

Fig. 1.
Fig. 1.
The molecular structures of the two independent molecules in (I) showing atom labelling scheme and displacement ellipsoids at the 35% probability level (arbitrary spheres for the H atoms).
Fig. 2.
Fig. 2.
View of a supramolecular chain in (I) with O—H···O and C—H···O interactions shown as orange-dashed lines. Color code: O (red), N (blue), C (grey) & H (green).
See this image and copyright information in PMC

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