Abstract

ANTIOXIDANT AND ANTIMICROBIAL ACTIVITY OF A NEW ISOFLAVONE GLYCOSIDE FROM THE ROOTS OF Prosopis Spicigera Linn

R. N. Yadava* and Prakrati Yadav

Abstract

A new Isoflavone glycoside 5, 7, 4 trihydroxy-6-methoxyisoflavone- 7-O-α-L-rhamnopyranosyl(14)O-α-L-arabinopyranosyl-4-O-β-Dxylopyranoside (A) was isolated from the roots of prosopis spicigera Linn. together with two known compounds Wogonin (B) and Diosmetin (C). The structure A was elucidated on the basis of various chemical degradations, color reactions and spectroscopic analysis viz. UV, IR, 1H NMR and 13C NMR. Compound A exhibited higher radical scavenging activity in the 1,1-diphenyl-2-pycryl-hydrazyl (DPPH) assay system and also screened against various bacteria and fungi.

Keywords: Prosopis spicigera Linn, Leguminosae, Isoflavone glycoside, Antioxidant activity, Antimicrobial activity.