6.

Secondary Metabolites from Scorzonera undulata ssp. deliciosa (Guss.) Maire (Asteracae) and Their Antioxidant Activities

Brahim Harkati, Salah Akkal, Christine Bayat, Hocine Laouer and M.G Dijoux Franca

Laboratoire de Phytochimie et Analyses physicochimiques et Biologiques, Département de Chimie, Faculté de Sciences exactes, Université Mentouri Constantine, Route d’Ain el Bey, 25000 Constantine, Algérie.

Université de Lyon, UMR 5557 CNRS-UCBL, CESN, Département de Botanique et Pharmacognosie, Faculté de Pharmacie, 8 avenue Rockefeller, 69373 Lyon Cedex 08, France.

Laboratoire de Valorisation des Ressources Naturelles Biologiques, Département de Biologie, Université Ferhat Abbas de Sétif, Algérie.

Abstract: From the shade-dried and powdered roots of S. undulata ssp. deliciosa eight known compounds; β-Amyrin acetate, methyl Oleanate, methyl Ursolate, Stigmasterol, β-Sitosterol, Galangustin, Coumarin-O-β-glycoside and Acteoside were isolated. Their structures were elucidated on the basis of extensive spectroscopic analysis, including 1D and 2D NMR, chemical transformation and comparison with the related known compounds. This is the first report of occurrence of these compounds in S. undulate ssp. deliciosa. The methanol extract of the roots of S. undulata ssp. deliciosa was examined for in vitro antioxidant properties using DPPH test (radical scavenging). .

Keywords: Scorzonera undulata ssp. deliciosa; secondary metabolites; antioxidant activities.