Structural determination of abutilins A and B,new flavonoids from Abutilon pakistanicum,by 1D and 2D NMR spectroscopy |
| |
| Authors: | Bakhat Ali Muhammad Imran Riaz Hussain Zaheer Ahmed Abdul Malik |
| |
| Institution: | International Center for Chemical and Biological Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi 75270, Pakistan |
| |
| Abstract: | Two new flavonoids, abutilin A and B, were isolated from the chloroform soluble fraction of Abutilon pakistanicum and their structures assigned from 1H and 13C 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‐β‐D ‐glucopyranoside (8) have also been reported from this species. Copyright © 2009 John Wiley & Sons, Ltd. |
| |
| Keywords: | NMR 1D/2D NMR flavonoids Abutilon pakistanicum Malvaceae abutilin A abutilin B |
|
|
