Acta Cryst. (2008). E64, o762  [ doi:10.1107/S1600536808007769 ]

6-Hydroxy-7-isopropyl-1,1,4a-trimethyl-2,3,4,4a,10,10a-hexahydrophenanthren-9(1H)-one

N. Rajouani, My. Y. Ait Itto, A. Benharref, A. Auhmani and J.-C. Daran

Abstract: The title compound, C₂₀H₂₈O₂, commonly named Sugiol, is a natural oxygenated diterpene that we have isolated for the first time from a hexane extract of the fruits of Juniperus Oxycedrus L. Its X-ray crystal structure determination confirms an abietane skeleton which was predicted by spectroscopic analysis, mainly by ¹H and ¹³C NMR. The cyclohexane ring adopts a flattened chair conformation, while the cyclohexene ring adopts an envelope conformation. The molecules are linked through O-HO hydrogen bonds to form a zigzag chain extending parallel to the c axis.

Online 29 March 2008

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