title: Constituents of the Egyptian Centaurea scoparia. III. Phenolic constituents of the aerial parts.
abstract: The ethanolic extract of the aerial parts of Centaurea scoparia Sieb. (Asteraceae) afforded five polyoxygenated flavones apigenin, luteolin, salvigenin, cirsimaritin, and hispidulin, the two lignans (-)-matairesinol and (-)-arctigenin together with omega-hydroxypropioguaiacone and vanillin. The structure elucidations of the isolated compounds are based on spectroscopic methods including 1D- and 2D-NMR spectra. Some proton and carbon signals are revised or newly reported.
authors.forename: D
authors.initials: D
authors.lastname: Youssef
authors.forename: A W
authors.initials: AW
authors.lastname: Frahm