title: Diterpenoids and triterpenoids from Euphorbia guyoniana.
abstract: Two new compounds with tigliane and cycloartane skeletons: 4,12-dideoxy(4alpha)phorbol-13-hexadecanoate (1) and 24-methylenecycloartane-3,28-diol (2), respectively, in addition of four known diterpenoids and 13 triterpenoids: 3-benzoyloxy-5,15-diacetoxy-9,14-dioxojatropha-6(17),11-diene (4), ent-abieta-8(14),13(15)-dien-16,12-olide (5), ent-8alpha,14alpha-epoxyabieta-11,13(15)-dien-16,12-olide (6), ent-3-hydroxyatis-16(17)-ene-2,14-dione (7), 3beta-hydroxytaraxer-14-en-28-oic acid (8), beta-sitosteryl-3beta-glucopyranoside-6'-O-palmitate (9), multiflorenyl acetate (10), multiflorenyl palmitate (11), peplusol (12), 24-methylenecycloartanol (3), lanosterol (13), euferol (14), butyrospermol (15), cycloartenol (16), obtusifoliol (17), cycloeucalenol (18) and beta-sitosterol (19), were isolated from the roots of Euphorbia guyoniana. Their structures were established on the basis of physical and spectroscopic analysis, including 1D and 2D homo- and heteronuclear NMR experiments (COSY, HSQC, HMBC and NOESY) and by comparison with the literature data.
authors.affiliation: Laboratoire de Chimie et Chimie de l'Environnement (L.C.C.E), Département de Chimie, Faculté des Sciences, Université de Batna, Batna 05000, Algeria.
authors.forename: Hamada
authors.initials: H
authors.lastname: Haba
authors.forename: Catherine
authors.initials: C
authors.lastname: Lavaud
authors.forename: Hassina
authors.initials: H
authors.lastname: Harkat
authors.forename: Abdulmagid
authors.initials: A
authors.lastname: Alabdul Magid
authors.forename: Laurence
authors.initials: L
authors.lastname: Marcourt
authors.forename: Mohammed
authors.initials: M
authors.lastname: Benkhaled
mesh_terms: D028481:Euphorbia / Q000737:chemistry*; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D013729:Terpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D013729:Terpenes