A new flavonol glycoside from the root of Sida rhombifolia

Department of Chemistry, R. B. S. College, Khandari Campus, Agra-282 002, Uttar Pradesh, India

Department of Chemistry, Ewing Christian College, Allahabad, Uttar Pradesh, India

Department of Chemistry, University of Allahabad, Allahabad-211 002, Uttar Pradesh, India

Centre of Food Technology, University of Allahabad, Allahabad-211 002, Uttar Pradesh, India

E-mail : dr.pks@rediffmail.com

Manuscript received online 19 June 2012, revised 15 January 2013, accepted 03 January 2013

A new flavonol glycoside 1, m.p. 173-175 °C, mol. formula : C₂₃H₂₄O₁₂ [M⁺) 492 (FABMS) has been isolated from ethanolic extract of Sida rhombifolia. Compound 1 has been characterized as 5,4' -dihydroxy-6, 7- dimethoxyflavonoi-3-O-β-D-glucopyranoside by chemical, spectral and elemental analysis.