6.

Flavononol Glycosides of Reseda arabica (Resedaceae)

Djemaa Berrehal, Assia Khalfallah, Ahmed Kabouche, Anastasia Karioti, Anna Rita Bilia, Ahmet C. Goren and Zahia Kabouche

Laboratoire d’Obtention de Substances Thérapeutiques (L.O.S.T), Faculté des sciences, Université Mentouri - Constantine, Campus Chaabat Ersas, 25000 Constantine, Algérie.

Department of Pharmaceutical Sciences, via Ugo Schiff 6, Sesto Fiorentino, 50019 Florence, Italy.

TUBITAK, Ulusal Metrology Institute, Chemistry Group, Oganic Chemistry Laboratory, PO Box 54, 41470 Gebze, Kocaeli, Türkiye

Abstract: Five flavonol glycosides, kaempferol 3,7-di-O- α -L-rhamnopyranoside (1) , isorhamnetin 3,7-di-O- α -L-rhamnopyranoside (2) , kaempferol 3-O- β -D-glucopyranoside-7-O- α -L-rhamnopyranoside (3) , isorhamnetin 3-O- β -D-glucopyranoside-7-O- α -L-rhamnopyranoside (4), Kaempferol 3-O- β -xylopyranosyl-(1'''→2'')-O- α -L-rhamnopyranoside-7-O- α -L-rhamnopyranoside (5), have been isolated from the aerial parts of Reseda arabica. Their structures were established on the basis of physical and spectroscopic analysis, and by comparison with the literature data.

Keywords: Reseda Arabica ; Resedaceae; f lavonoid glycosides .