title: Structural determination of abutilins A and B, new flavonoids from Abutilon pakistanicum, by 1D and 2D NMR spectroscopy.
abstract: Two new flavonoids, abutilin A and B, were isolated from the chloroform soluble fraction of Abutilon pakistanicum and their structures assigned from (1)H and (13)C NMR spectra, DEPT and by 2D COSY, HMQC and HMBC experiments. Ferulic acid (3), (E)-cinnamic acid (4), 5-hydroxy-4',6,7,8-tetramethoxyflavone (5), kaempferol (6), luteolin (7) and luteolin 7-O-beta-D-glucopyranoside (8) have also been reported from this species.
authors: International Center for Chemical and Biological Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi 75270, Pakistan.
authors: Bakhat
authors: B
authors: Ali
authors: Muhammad
authors: M
authors: Imran
authors: Riaz
authors: R
authors: Hussain
authors: Zaheer
authors: Z
authors: Ahmed
authors: Abdul
authors: A
authors: Malik
mesh_terms: D000465:Algorithms; D002725:Chloroform / Q000737:chemistry; D002934:Cinnamates / Q000737:chemistry / Q000302:isolation & purification; D003373:Coumaric Acids / Q000737:chemistry / Q000302:isolation & purification; D003903:Deuterium; D047309:Flavones / Q000737:chemistry* / Q000302:isolation & purification; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification; D047311:Luteolin / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D019660:Malvaceae / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D012997:Solvents / Q000737:chemistry
chemical_list: D002934:Cinnamates; D003373:Coumaric Acids; D047309:Flavones; D005419:Flavonoids; D005960:Glucosides; D044949:Kaempferols; D012997:Solvents; C548366:abutilin A; C548367:abutilin B; C029010:cinnamic acid; C006552:kaempferol; D002725:Chloroform; D003903:Deuterium; C004999:ferulic acid; D047311:Luteolin