title: Zinagrandinolides A-C, cytotoxic delta-elemanolide-type sesquiterpene lactones from Zinnia grandiflora.
abstract: Three new delta-elemanolide-type sesquiterpene lactones, zinagrandinolides A-C (1-3), and the known delta-elemanolide 4 have been isolated by a bioassay-guided fractionation of a cytotoxic hexane extract of the aerial parts of Zinnia grandiflora. The structures of 1-3 were determined on the basis of high-resolution mass and NMR data. All compounds exhibited strong cytotoxicity against the cancer cell lines NCI-H460, MCF-7, SF-268, and MIA Pa Ca-2 and the normal human fibroblast cell type WI-38, but none showed significant selectivity.
authors.affiliation: SW Center for Natural Products Research and Commercialization, Office of Arid Lands Studies, College of Agriculture and Life Sciences, The University of Arizona, 250 E. Valencia Road, Tucson, AZ 85706-6800, USA.
authors.forename: Bharat P
authors.initials: BP
authors.lastname: Bashyal
authors.forename: Steven P
authors.initials: SP
authors.lastname: McLaughlin
authors.forename: A A Leslie
authors.initials: AA
authors.lastname: Gunatilaka
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D001130:Arizona; D019659:Asteraceae / Q000737:chemistry*; D002478:Cells, Cultured; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D013237:Stereoisomerism
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D007783:Lactones; D012717:Sesquiterpenes; C516382:zinagrandinolide A; C516383:zinagrandinolide B; C516384:zinagrandinolide C