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Tebbaa M.,Laboratoire Of Chimie Bioorganique Et Analytique | Akssira M.,Laboratoire Of Chimie Bioorganique Et Analytique | Elhakmaoui A.,Laboratoire Of Chimie Bioorganique Et Analytique | El Ammari L.,Université Ibn Tofail | And 2 more authors.
Acta Crystallographica Section E: Structure Reports Online | Year: 2010

The title compound [systematic name: 2-(4a,8-dimethyl-1,2,3,4,4a,5,6,8a- octa-hydro-naphthalen-2-yl)acrylic acid anhydride], C30H 42O3, is a new isocostic anhydride which was synthesized from the aerial part of Inula Viscosa- (L) Aiton [or Dittrichia Viscosa- (L) Greuter]. The mol-ecule adopts an essentially linear shape with two terminal fused-rings bridged by the anhydride group. The external rings have the same conformation (half-chair) while each of the two inner rings has an almost ideal chair conformation. In the crystal, inter-molecular C - H⋯O inter-actions link the mol-ecules into a two-dimensional array in the bc plane.


Moumou M.,Laboratoire Of Chimie Bioorganique Et Analytique | Akssira M.,Laboratoire Of Chimie Bioorganique Et Analytique | Elhakmaoui A.,Laboratoire Of Chimie Bioorganique Et Analytique | El Ammari L.,Université Ibn Tofail | And 2 more authors.
Acta Crystallographica Section E: Structure Reports Online | Year: 2010

The title compound, C18H20O3, a hemisynthetic product, was obtained by the reaction of benzoyl chloride and p-methoxy-thymol. The structure comprises two benzene rings bridged by a carboxyl group; the dihedral angle between the rings is 73.54 (8)°.

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