Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 1 (January 2012)

organic compounds

Acta Cryst. (2012). E68, o167-o168    [ doi:10.1107/S1600536811053207 ]


M. Moumou, A. Benharref, A. Oudahmane, F. Mellouki and M. Berraho

Abstract: The title compound, C19H29NO6, was synthesized from 9[alpha]-hy­droxy­parthenolide (9[alpha]-hy­droxy-4,8-dimethyl-12-methyl­ene-3,14-dioxatricyclo­[,4]tetra­dec-7-en-13-one), which was isolated from the chloro­form extract of the aerial parts of Anvillea radiata. The mol­ecule contains a fused five- and ten-membered ring system. The ten-membered ring adopts an approximate chair-chair conformation, while the five-membered ring is in an envelope conformation, with the C atom closest to the hy­droxy group forming the flap. In the crystal, weak C-H...O hydrogen bonds connect the mol­ecules into layers parallel to (001). An intra­molecular O-H...N hydrogen bond is also present.

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