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Rare 2-Phenoxychromones from Ononis serrata Growing in Egypt
Maged S. Abdel-Kader,Fahima F. Kassem,Masouda E. Amer 한국생약학회 2004 Natural Product Sciences Vol.10 No.1
Two 2-phenoxychromones; a rare group of natural products, were isolated from the combined ethyl acetate and chloroform fractions of the ethanolic extract of Ononis serrata frossk (Leguminosae) growing in Egypt. Structures were elucidated by chemical, spectroscopic methods as well as single X-ray diffraction analyses. The cytotoxic and antimicrobial effects of the two compounds were examined. It is worth to mention that this is the first report on the isolation of 2-phenoxychromones from the family Leguminosae.
Two New Flavonol Glycosides From The Aerial Parts of Lotus lalambensis Growing in Saudi Arabia
Hanan M. El-Youssef,Brian T. Murphy,Masouda E. Amer,Adnan J. Al-Rehaily,Maged S. Abdel-Kader,David G. I. Kingston 한국생약학회 2008 Natural Product Sciences Vol.14 No.2
Phytochemical study of the aerial parts of Lotus lalambensis Schweinf resulted in the isolation and identification of two new flavonol glycosides; kaempferol 3-O-(5"-acetyl)-apioside-7-O-α-L-rhamnopyranoside (1) and kaempferol 3-O-α-[β-D-xylosyl-(1"" → 2")-L-rhamnopyranoside]-7-O-α-L-rhamnopyranoside (2). Structures were determined utilizing different physical, chemical, spectroscopic data including 2D-NMR experiments and HRFABMS.