Rademeyer, MVan Heerden, FRVan Der Merwe, MM2009-02-122009-02-122009-01Rademeyer, M. 2009. Dehydrobrachylaenolide: an eudesmanetype sesquiterpene lactone. Acta Crystallographica Section E, Vol. 65(1), pp 71600-5368http://hdl.handle.net/10204/2982Copyright: 2009 International Union of CrystallographyThe 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 interactionsenDehydrobrachylaenolideSingle-crystal X-ray studyMean sigma(C–C) = 0.002 A°R factor = 0.033wR factor = 0.095Data-to-parameter ratio = 14.1T = 150 K;ArticleRademeyer, M., Van Heerden, F., & Van Der Merwe, M. (2009). Dehydrobrachylaenolide: an eudesmanetype sesquiterpene lactone. http://hdl.handle.net/10204/2982Rademeyer, M, FR Van Heerden, and MM Van Der Merwe "Dehydrobrachylaenolide: an eudesmanetype sesquiterpene lactone." (2009) http://hdl.handle.net/10204/2982Rademeyer M, Van Heerden F, Van Der Merwe M. Dehydrobrachylaenolide: an eudesmanetype sesquiterpene lactone. 2009; http://hdl.handle.net/10204/2982.TY - Article AU - Rademeyer, M AU - Van Heerden, FR AU - Van Der Merwe, MM AB - 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 DA - 2009-01 DB - ResearchSpace DP - CSIR KW - Dehydrobrachylaenolide KW - Single-crystal X-ray study KW - Mean sigma(C–C) = 0.002 A° KW - R factor = 0.033 KW - wR factor = 0.095 KW - Data-to-parameter ratio = 14.1 KW - T = 150 K; LK - https://researchspace.csir.co.za PY - 2009 SM - 1600-5368 T1 - Dehydrobrachylaenolide: an eudesmanetype sesquiterpene lactone TI - Dehydrobrachylaenolide: an eudesmanetype sesquiterpene lactone UR - http://hdl.handle.net/10204/2982 ER -