title: A new prenylated flavanoid with antibacterial activity from propolis collected in Egypt.
abstract: A novel prenylated flavanoid, isonymphaeol-D (1), together with two known compounds, isonymphaeol-B (2) and nymphaeol-B (3), were isolated from Egyptian propolis. The structures of the isolated compounds were determined by various spectroscopic methods. 1 exhibited antibacterial activity against Gram-positive (Bacillus cereus, Staphylococcus aureus) and Gram-negative strains (Serratia sp., Pseudomonos sp., Escherichia coli).
authors.affiliation: Basic Science Department, Industrial Education College, Beni-Sueif University, Beni-Sueif, Egypt.
authors.forename: Ashraf
authors.initials: A
authors.lastname: El-Bassuony
authors.forename: Sameh
authors.initials: S
authors.lastname: AbouZid
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis*; D052978:Disk Diffusion Antimicrobial Tests; D004534:Egypt; D005419:Flavonoids / Q000302:isolation & purification*; D015394:Molecular Structure; D054876:Prenylation; D011429:Propolis / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D005419:Flavonoids; C548391:isonymphaeol D; D011429:Propolis