title: Bioactive apocarotenoids annuionones F and G: structural revision of annuionones A, B and E.
abstract: The polar bioactive fractions of Helianthus annuus cv. Stella and SH-222 have yielded eight apocarotenoids, two of them isolated for the first time as natural products (annuionones F and G). The isolation of higher amounts of annuionones A and E allowed us to realize a more comprehensive spectroscopical study. We propose a revised structure for annuionone A, B and E based on careful re-analyses of new spectroscopical data.
authors.affiliation: Grupo de Alelopatía, Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, C/ República Saharaui s/n, Apdo. 40, 11510-Puerto Real (Cádiz), Spain. famacias@uca.es
authors.forename: Francisco A
authors.initials: FA
authors.lastname: Macías
authors.forename: Adriana
authors.initials: A
authors.lastname: López
authors.forename: Rosa M
authors.initials: RM
authors.lastname: Varela
authors.forename: Ascensión
authors.initials: A
authors.lastname: Torres
authors.forename: José M G
authors.initials: JM
authors.lastname: Molinillo
mesh_terms: D002338:Carotenoids / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D006368:Helianthus / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D013055:Spectrophotometry, Infrared; D014908:Triticum / Q000187:drug effects / Q000254:growth & development
chemical_list: D010936:Plant Extracts; C495309:annuionone F; C495308:annuionone G; D002338:Carotenoids