title: Gnapholide: a new guaiac-dimer from Pulicaria gnaphalodes (Asteraceae).
abstract: The ethyl acetate soluble part of the chloroform extract of Pulicaria gnaphalodes belonging to the family Asteraceae afforded a new sesquiterpene-dimer of guaiane class named as gnapholide and anabsinthin of the same skeleton. The structures of both the compounds were elucidated with the aid of spectroscopic techniques including 2D NMR.
authors.affiliation: H.E.J. Research Institute of Chemistry, University of Karachi, Pakistan.
authors.forename: Muhammad Shaiq
authors.initials: MS
authors.lastname: Ali
authors.forename: Muhammad
authors.initials: M
authors.lastname: Jahangir
authors.forename: Syed Shah
authors.initials: SS
authors.lastname: Uzair
authors.forename: Ayman Wahba
authors.initials: AW
authors.lastname: Erian
authors.forename: Rasool Bakhsh
authors.initials: RB
authors.lastname: Tareen
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D002845:Chromatography; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010154:Pakistan; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D013055:Spectrophotometry, Infrared
chemical_list: D012717:Sesquiterpenes; C459141:gnapholide; C459142:anabsinthin