Phytochemical constituents and chemosystematic significance of Pulicaria jaubertii E.Gamal-Eldin (Asteraceae)

Publication date: April 2018 Source:Phytochemistry Letters, Volume 24 Author(s): Abdelsamed I. Elshamy, Tarik A. Mohamed, Mona M. Marzouk, Taha A. Hussien, Akemi Umeyama, Mohamed Elamir F. Hegazy, Thomas Efferth The chemical characterization of methylene chloride/methanol (1:1) extract of the air-dried whole medicinal plant, Pulicaria jaubertii E. Gamal-Eldin, led to isolation and identification of two new hydroquinone compounds; 2-(2-acetoxy propyl), 5-methyl hydroquinone (1) and 2-(2-hydroxy propyl), 5-methyl hydroquinone-4-O-β-D-glucopyranoside (2), four known flavonols (3-6) and 7 known dihydroflavonols (7-13). The structures were established depending upon comprehensive analysis of the NMR, IR and HR/EI-MS data. Herein, compounds 6, and 10-13 were isolated for the first time from this plant. The chemotaxonomic significance of the isolated flavonoids from P. jaubertii comparing with those reported from other Pulicaria species was also summarized. Graphical abstract
Source: Phytochemistry Letters - Category: Chemistry Source Type: research