title: Sesquiterpenes from Centaurea aspera.
abstract: The aerial parts of two subspecies of Centaurea aspera L. (Asteraceae) yielded the germacranolides 1a-h, 2, 3, 4 and 5, the elemane derivatives 6d and 6f, the lignan matairesinol, the degraded terpene loliolide, and the onopordopicrin-valine dimeric adduct 7. From these, compounds 1e, 3 and 6d are natural products. The chemical composition of the two subspecies is very similar, a circumstance which does not support a taxonomic subdivision of the species.
authors: Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Valencia, Spain. alberto.marco@uv.es
authors: J Alberto
authors: JA
authors: Marco
authors: Juan F
authors: JF
authors: Sanz-Cervera
authors: Alberto
authors: A
authors: Yuste
authors: Félix
authors: F
authors: Sancenón
authors: Miguel
authors: M
authors: Carda
mesh_terms: D031179:Centaurea / Q000737:chemistry*; D008956:Models, Chemical; D015394:Molecular Structure; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D012717:Sesquiterpenes