title: Highly oxygenated guaianolides and eudesman-12-oic acids from Balsamorhiza sagittata and Balsamorhiza macrophylla.
abstract: Investigation of lipophilic exudates from the aerial parts of Balsamorhiza sagittata and B. macrophylla afforded three new highly oxygenated guaianolides (1-3), in addition to known guaianolides, germacranolide and eudesmane acids. Their chemical structures were elucidated by spectroscopic methods and the data for the compounds are reported in Tables 1 and 2 and in Experimental.
authors.affiliation: Department of Chemistry, Aswan-Faculty of Science, South Valley University, Egypt.
authors.forename: Abou
authors.initials: A
authors.lastname: El-Hamd H Mohamed
authors.forename: Ahmed A
authors.initials: AA
authors.lastname: Ahmed
authors.forename: Eckhard
authors.initials: E
authors.lastname: Wollenweber
authors.forename: Bruce
authors.initials: B
authors.lastname: Bohm
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Asakawa
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D002855:Chromatography, Thin Layer; D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D008968:Molecular Conformation; D045787:Sesquiterpenes, Eudesmane / Q000737:chemistry* / Q000302:isolation & purification; D045789:Sesquiterpenes, Guaiane / Q000737:chemistry* / Q000302:isolation & purification; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D045787:Sesquiterpenes, Eudesmane; D045789:Sesquiterpenes, Guaiane