title: Flavonoids from Iris spuria (Zeal) cultivated in Egypt.
abstract: A new 12a-dehydrorotenoid 1, 11-dihydroxy-9, 10-methylenedioxy-12a-dehydrorotenoid (1), together with a new isoflavonoid glycoside tectorigenin-7-O-beta-glucosyl-4'-O-beta-glucoside (3), were isolated and identified from the rhizomes of I. spuria (Zeal). In addition, 4 known compounds, tectorigenin (2) tectorigenin-7-O-beta-glucosyl (1 --> 6) glucoside (4), tectoridin (a tectorigenin-7-O-beta-glucoside) (5) and tectorigenin-4'-O-beta-glucoside (6) were isolated and identified for the first time from this plant. The structures of the isolated compounds were determined by spectroscopic methods (UV, IR, 1H, 13C-NMR, DEPT, HMQC, NOESY, and HMBC experiments and MS spectrometry) and by comparison with literature data of known compounds. Compounds 2, 4, 5, and 6 are reported for the first time from this plant through the present study.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, Egypt. nasersingab@hotmail.com
authors.forename: Abdel Nasser B
authors.initials: AN
authors.lastname: Singab
mesh_terms: D002725:Chloroform; D002851:Chromatography, High Pressure Liquid; D004534:Egypt; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D006868:Hydrolysis; D007202:Indicators and Reagents; D031323:Iris Plant / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D000432:Methanol; D018517:Plant Roots / Q000737:chemistry; D012997:Solvents; D021241:Spectrometry, Mass, Electrospray Ionization; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005419:Flavonoids; D007202:Indicators and Reagents; D012997:Solvents; D002725:Chloroform; D000432:Methanol