Structural determination of quercusides A and B, new flavonoid glucosides from Quercus incana, by 1D and 2D NMR spectroscopy

被引：2

作者：

Iftikhar, Benish ^{[2
]}

Perveen, Shagufta ^{[1
]}

Malik, Abdul ^{[1
]}

Sultana, Najma ^{[3
]}

Arayne, Saeed ^{[2
]}

Muhammad, Pir ^{[4
]}

机构：

[1] Univ Karachi, HEJ Res Inst Chem, Int Ctr Chem & Biol Sci, Karachi 75270, Pakistan

[2] Univ Karachi, Dept Chem, Karachi 75270, Pakistan

[3] Univ Karachi, Fac Pharm, Dept Pharmaceut Chem, Karachi 75270, Pakistan

[4] Jahanzeb Postgrad Coll, Dept Chem, Saidu Sharif, Swat, Pakistan

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 2009年 / 47卷 / 07期

关键词：

NMR; H-1; C-13; quercuside A; quercuside B; flavonoids; Quercus incana;

D O I：

10.1002/mrc.2426

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Quercusides A and B, new flavonoid glucosides have been isolated from the chloroform soluble fractions of Quercus incana. Their structures were assigned from H-1 and C-13 nuclear magnetic resonance spectra, distortionless enhancement by polarization transfer (DEPT) and by correlation spectroscopy, heteronuclear multiple quantum correlation (HMQC) and heteronuclear multiple bond correlation (HMBC) experiments. Lupeol, beta-sitosterol and ursolic acid have also been reported from this species. Copyright (c) 2009 John Wiley & Sons, Ltd.

引用

页码：605 / 608

页数：4

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