[HTML version][PDF version][CIF][3d view][Structure Factors][Supplementary Material][CIF check Report][Issue contents]  [Open access]

[Contents scheme]

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.

Online 17 December 2011

Copyright © International Union of Crystallography
IUCr Webmaster