title: A new sesquiterpene lactone and other constituents of Moquiniastrum polymorphum subsp. floccosum (Asteraceae).
abstract: A new guaianolide, 1S, 3S, 5R, 6S, 7S, 11R-l-hydroxy-11α,13-dihydrozaluzanin C (1), was isolated from Moquiniastrum polymorphum subsp. floccosum trunk bark, together with fifteen known compounds, which were identified as 11α,13-dihydroglucozaluzanin C (2), 8α-hydroxy-11α,13-dihydrozaluzanin C (3), zaluzanin C (4), gochnatiolide B (5), ethyl caffeate (6), methyl chlorogenate (7), ethyl chlorogenate (8), methyl 3,5-dicaffeoyl quinate (9), ethyl 3,5-dicaffeoyl quinate (10), methyl 4,5-dicaffeoyl quinate (11), ethyl 4,5-dicaffeoyl quinate (12), ethyl 3,4-dicaffeoyl quinate (13), 3,5-dicaffeoyl quinic acid (14), 4,5-dicaffeoyl quinic acid (15), and 3,4-dicaffeoyl quinic acid (16). With the exception of 5, all known compounds are being reported for the first time in M. polymorphum.
authors.forename: L B
authors.initials: LB
authors.lastname: Strapasson
authors.forename: André Luis
authors.initials: AL
authors.lastname: Rúdiger
authors.forename: Robert A
authors.initials: RA
authors.lastname: Burrow
authors.forename: Andersson
authors.initials: A
authors.lastname: Barison
authors.forename: Maria Elida A
authors.initials: ME
authors.lastname: Stefanello
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D007783:Lactones / Q000737:chemistry*; D015394:Molecular Structure; D012717:Sesquiterpenes / Q000737:chemistry*
chemical_list: D007783:Lactones; D012717:Sesquiterpenes