title: The gastric cytoprotective effect of several sesquiterpene lactones.
abstract: The aerial part of Artemisia douglasiana, used in folk medicine as a cytoprotective agent against the development of peptic ulcer, was studied, its active principle dehydroleucodine [1] isolated, and its pharmacological properties analyzed. In order to establish whether or not the reported activity is particular to sesquiterpene lactones, the study of the cytoprotective activity of several related guaianolides and pseudoguaianolides from plants was undertaken. Ludartin [3], 8-angeloyloxy-3-hydroxyguaia-3(15),10(14),11(13)-trien-6,12- olide [4], hymenin [5], mexicanin I [6], helenanin [7], and 9-O-desacetylsparthulin-2-O-angelate [8] were found to exhibit protection. Desacetoxymatricarin [2] did not show cytoprotective activity. The results obtained from the different sesquiterpene lactones studied suggest that the presence of the alpha-methylene-gamma-lactone moiety is, in principle, a requirement for the observed antiulcerogenic activity.
authors.affiliation: Departamento de Quimica Orgánica, Universidad Nacional de San Luis, Argentina.
authors.forename: O S
authors.initials: OS
authors.lastname: Giordano
authors.forename: E
authors.initials: E
authors.lastname: Guerreiro
authors.forename: M J
authors.initials: MJ
authors.lastname: Pestchanker
authors.forename: J
authors.initials: J
authors.lastname: Guzman
authors.forename: D
authors.initials: D
authors.lastname: Pastor
authors.forename: T
authors.initials: T
authors.lastname: Guardia
mesh_terms: D000818:Animals; D000897:Anti-Ulcer Agents / Q000302:isolation & purification; D000431:Ethanol; D007783:Lactones / Q000302:isolation & purification / Q000494:pharmacology*; D008297:Male; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000032:analysis*; D051381:Rats; D011919:Rats, Inbred Strains; D012717:Sesquiterpenes / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D000897:Anti-Ulcer Agents; D007783:Lactones; D012717:Sesquiterpenes; D000431:Ethanol