title: New terpenoids from Haplopappus multifolius.
abstract: The chemical investigation of the aerial parts of Haplopappus multifolius afforded the new monoterpene 2,9-epoxy-p-menth-6-en-8-ol (7, haplopappol), the new monoterpenoid ester 9-cis-p-coumaroyloxy-alpha-terpineol (8, haplofolin), the new diterpene 18-hydroxylabda-7,13Z-dien-15-oic acid (6) and its known E-isomer (5). In addition, the known dihydroflavones 3',5-dihydroxy-4',7-dimethoxydihydroflavone and 3',4',5-trihydroxy-7-methoxydihydroflavone and the known dihydroflavonols 3',5-dihydroxy-4',7-dimethoxydihydroflavonol and 3',4',5-trihydroxy-3-acetyl-7-methoxydihydroflavonol were also obtained. The structural assignments of these compounds were made possible by the different spectroscopic measurements.
authors: Department of Pharmacognosy, Faculty of Pharmacy, University of Mansoura, Egypt. galaltm@mans.edu.eg
authors: G T
authors: GT
authors: Maatooq
authors: A A
authors: AA
authors: Gohar
authors: J J
authors: JJ
authors: Hoffmann
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D002677:Chile; D002855:Chromatography, Thin Layer; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D010936:Plant Extracts / Q000032:analysis; D021241:Spectrometry, Mass, Electrospray Ionization; D013729:Terpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D005419:Flavonoids; D010936:Plant Extracts; D013729:Terpenes