Structural determination of abutilins A and B, new flavonoids from Abutilon pakistanicum, by 1D and 2D NMR spectroscopy.
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.
Ali
Bakhat
B
International Center for Chemical and Biological Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi 75270, Pakistan.
Imran
Muhammad
M
Hussain
Riaz
R
Ahmed
Zaheer
Z
Malik
Abdul
A
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
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