title: New bisabolane sesquiterpenes from Ligularia songarica.
abstract: Phytochemical investigation of Ligularia songarica (Compositae) afforded seven new bisabolane-type sesquiterpenes. Their structures were confirmed on the basis of spectroscopic methods, especially 2D-NMR techniques, and compound 7 showed stronger antibacterial activity against Escherichia coli, Pseudomonas acruginosa and Salmonella pullorum.
authors.affiliation: National Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University, Lanzhou, People's Republic of China.
authors.forename: B
authors.initials: B
authors.lastname: Fu
authors.forename: L
authors.initials: L
authors.lastname: Yang
authors.forename: X P
authors.initials: XP
authors.lastname: Yang
authors.forename: X P
authors.initials: XP
authors.lastname: Li
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Jia
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology*; D019659:Asteraceae / Q000737:chemistry*; D001419:Bacteria / Q000187:drug effects*; D002681:China; D002855:Chromatography, Thin Layer; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000494:pharmacology*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D000900:Anti-Bacterial Agents; D012717:Sesquiterpenes