FLAVONOIDS FROM THE LEAVES OF HIBISCUS CANNABINUS L.

Document Type : Original Article

Author

Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.

Abstract

From the leaves of Hibiscus cannabinus L., three flavonoidal glycosides were isolated and fully identified using different physical and spectral tools viz; chromatographic techniques (TLC, PC, CC), UV, 1H- and 3C- NMR (1-D and 2-D) experiments, as well as EI- and FAB- mass spectroscopy. These allowed to get confirmation of the structure of these compounds to be kaempferol-7-0-a-L-rhamnoside, apigenin-7-0-B-D-glucoside and kaempferol-3,7 di-O-a-L- rhamnoside. The antibacterial tests of these compounds were also demonstrated.