title: neo-Clerodane diterpenoids from Baccharis flabellata.
abstract: Three diterpenoid derivatives were isolated from the acetone extract of Baccharis flabellata. Their structures were elucidated as 2,19;15,16-diepoxy-neo-clerodan-3,13(16),14-trien-18-oic acid, 15,16-epoxy-5,10-seco-clerodan-1(10),2,4,13(16),14-pentaen-18,19-olide and 15,16-epoxy-neo-clerodan-1,3,13(16),14-tetraen-18,19-olide through spectroscopic analyses.
authors.affiliation: Area de Quimica Orgánica, INTEQUI-CONICET, Facultad de Química Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, 5700, San Luis, Argentina.
authors.forename: Virginia E Juan
authors.initials: VE
authors.lastname: Juan Hikawczuk
authors.forename: Pedro C
authors.initials: PC
authors.lastname: Rossomando
authors.forename: Oscar S
authors.initials: OS
authors.lastname: Giordano
authors.forename: José Roberto
authors.initials: JR
authors.lastname: Saad
mesh_terms: D031175:Baccharis / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D015394:Molecular Structure; D035261:Plant Components, Aerial / Q000737:chemistry
chemical_list: C473521:15,16-epoxy-5,10-seco-clerodan-1(10),2,4,13(16),14-pentaen-18,19-olide; C473522:15,16-epoxy-neo-clerodan-1,3,13(16),14-tetraen-18,19-olide; C473520:2,19-15,16-diepoxy-neo-clerodan-3,13(16),14-trien-18-oic acid; D004224:Diterpenes