A benzil and isoflavone from Iris tenuifolia.
Two compounds, tenuifodione (1) and tenuifone (2), and 12 known compounds, izalpinin (3), alpinone (4), arborinone (5), irilin B (6), irisone A (7), irisone B (8), betavulgarin (9), beta-sitosterol (10), 5,7-dihydroxy-2',6-dimethoxyisoflavone (11), 2',5-dihdroxy-6,7-methylenedioxy flavanone (12), irisoid A (13) and ethyl-beta-d-glucopyranoside (14) were isolated from the whole plant of Iris tenuifolia Pall. All compounds, except 12, were isolated for the first time from this plant. Compounds 2, 3 and 11 have shown a considerable DPPH radical scavenging activity. Structures of these compounds were identified on the basis of spectroscopic techniques, including 2D NMR. Compounds 3, 5 and 7 were also subjected to single-crystal X-ray diffraction analysis and their structures were unambiguously deduced.
Choudhary
Muhammad Iqbal
MI
H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan. hej@cyber.net.pk
Hareem
Sumaira
S
Siddiqui
Hina
H
Anjum
Shazia
S
Ali
Shamsher
S
Atta-Ur-Rahman
Zaidi
Mudassir Israr
MI
D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology; D018360:Crystallography, X-Ray; D020128:Inhibitory Concentration 50; D031323:Iris Plant / Q000737:chemistry*; D007529:Isoflavones / Q000737:chemistry* / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D010658:Phenylglyoxal / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D013237:Stereoisomerism
D000975:Antioxidants; D007529:Isoflavones; D010658:Phenylglyoxal; C006697:benzil