title: Bioactive terpenoids from sunflower leaves cv. Peredovick.
abstract: The CH(2)Cl(2) extract of dried leaves of Helianthus annuus L. cv. Peredovick(R) has yielded, in addition to the known sesquiterpene lactones annuolide E and leptocarpin, and the sesquiterpenes heliannuols A, C, D, F, G, H, I, the new bisnorsesquiterpene, annuionone E, and the new sesquiterpenes heliannuol L, helibisabonol A and helibisabonol B. Structural elucidation was based on extensive spectral (one and two-dimensional NMR experiments) and theoretical studies. The sesquiterpenes heliannuol A and helibisabonol A and the sesquiterpene lactone leptocarpin inhibited the growth of etiolated wheat coleoptiles.
authors.affiliation: Grupo de Alelopati;a, Departamento de Qui;mica Orgánica, Facultad de Ciencias, Universidad de Cádiz, C/. República Saharaui s/n, Apdo. 40, 11510-Puerto Real, Spain. famacias@uca.es
authors.forename: Francisco A
authors.initials: FA
authors.lastname: Macías
authors.forename: Ascensión
authors.initials: A
authors.lastname: Torres
authors.forename: José L G
authors.initials: JL
authors.lastname: Galindo
authors.forename: Rosa M
authors.initials: RM
authors.lastname: Varela
authors.forename: José A
authors.initials: JA
authors.lastname: Alvarez
authors.forename: José M G
authors.initials: JM
authors.lastname: Molinillo
mesh_terms: D006368:Helianthus / Q000737:chemistry*; D008958:Models, Molecular; D018515:Plant Leaves / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D013057:Spectrum Analysis
chemical_list: D012717:Sesquiterpenes