Structural determination of abutilins A and B, new flavonoids from<i>Abutilon pakistanicum</i>, by 1D and 2D NMR spectroscopy
作者:Bakhat Ali、Muhammad Imran、Riaz Hussain、Zaheer Ahmed、Abdul Malik
DOI:10.1002/mrc.2546
日期:——
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
从巴基斯坦白屈菜的氯仿可溶级分中分离出两个新的黄酮类化合物Abutilin A和B,并通过(1)H和(13)C NMR光谱,DEPT以及2D COSY,HMQC和HMBC实验确定了它们的结构。阿魏酸(3),(E)-肉桂酸(4),5-羟基-4',6,7,8-四甲氧基黄酮(5),山emp酚(6),木犀草素(7)和木犀草素7-O-β -D-吡喃葡萄糖苷(8)也已从该物种中报道。