title: A new eudesmane derivative from Onopordon ambiguum.
abstract: Reinvestigation of Onopordon ambiguum extract afforded a new eudesmane derivative 1, in addition to the known elemanoid derivative 2. The structures of both compounds were determined by spectroscopic techniques, including 1H-, 13C-NMR, DEPT, 1H-1H and 1H-13C COSY analysis.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, Egypt.
authors.forename: Safaa A
authors.initials: SA
authors.lastname: El-Moghazy
authors.forename: Ahmed A
authors.initials: AA
authors.lastname: Ahmed
authors.forename: Hoda F
authors.initials: HF
authors.lastname: Abdel-Ghani
authors.forename: Mohamed A
authors.initials: MA
authors.lastname: El-Shanawany
mesh_terms: D019659:Asteraceae; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification; D045787:Sesquiterpenes, Eudesmane
chemical_list: D010936:Plant Extracts; D012717:Sesquiterpenes; D045787:Sesquiterpenes, Eudesmane; C015872:eudesmane