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Structural determination of abutilins A and B, new flavonoids from Abutilon pakistanicum, by 1D and 2D NMR spectroscopy

✍ Scribed by Bakhat Ali; Muhammad Imran; Riaz Hussain; Zaheer Ahmed; Abdul Malik

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
117 KB
Volume
48
Category
Article
ISSN
0749-1581

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✦ Synopsis

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‐β‐D‐glucopyranoside (8) have also been reported from this species. Copyright © 2009 John Wiley & Sons, Ltd.

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