title: Lignans and Other Constituents of Centaurea sphaerocephala ssp. polyacantha.
abstract: Extraction of the aerial parts of CENTAUREA SPHAEROCEPHALA L. ssp. POLYACANTHA (Willd.) Dostal furnished the lignans (-)-matairesinol, (-)-arctigenin, and (-)-arctiin, two sesquilignans lappaol A and a stereo- or structural isomer of lappaol A, and a new dithienylacetylene.
authors.affiliation: Departamento de Química, Faculdade de Engenharia, Universidade do Porto, 4000-Porto, Portugal.
authors.forename: M M
authors.initials: MM
authors.lastname: Bastos
authors.forename: A
authors.initials: A
authors.lastname: Kijjoa
authors.forename: J M
authors.initials: JM
authors.lastname: Cardoso
authors.forename: A B
authors.initials: AB
authors.lastname: Gutiérrez
authors.forename: W
authors.initials: W
authors.lastname: Herz