The three-ring eudesmanolide, C15H16O3, is a natural product isolated from Dicoma anomala Sond. (Asteraceae). The compound contains an endo-exo cross conjugated methylenecyclohexenone ring with an envelope conformation trans-fused with cyclohexane and trans-annelated with an -methylene -lactone. The absolute structure was assigned by optical rotation measurements compared to those from the synthetic compound with known stereochemistry. The crystal packing is consolidated by C-HO interactions
Reference:
Rademeyer, M. 2009. Dehydrobrachylaenolide: an eudesmanetype sesquiterpene lactone. Acta Crystallographica Section E, Vol. 65(1), pp 7
Rademeyer, M., Van Heerden, F., & Van Der Merwe, M. (2009). Dehydrobrachylaenolide: an eudesmanetype sesquiterpene lactone. http://hdl.handle.net/10204/2982
Rademeyer, M, FR Van Heerden, and MM Van Der Merwe "Dehydrobrachylaenolide: an eudesmanetype sesquiterpene lactone." (2009) http://hdl.handle.net/10204/2982
Rademeyer M, Van Heerden F, Van Der Merwe M. Dehydrobrachylaenolide: an eudesmanetype sesquiterpene lactone. 2009; http://hdl.handle.net/10204/2982.
