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A new biologically active flavonol glycoside from Psoralea corylifolia (Linn.)
1Department of Chemistry, Natural Products Laboratory, Dr. H. S. Gour University Sagar, Sagar, M.P. 470002, India. rnyadava@rediffmail.com
Abstract:
A new biologically active flavonol glycoside (1) mp 264-265 degrees C, C32H38O20, [M]+ 742 (EIMS) has been isolated from the methanol-soluble fraction of the defatted seeds of Psoralea corylifolia (Linn.). It was characterised as the new flavonol glycoside 3,5,3',4'-tetrahydroxy-7-methoxyflavone-3'-O-alpha-L-xylopyranosyl(1-->3)-O-alpha-L-arabinopyranosyl(1-->4)-O-beta-D-galactopyranoside by several colour reactions, spectral analysis and chemical degradations. Compound 1 showed anti-microbial activity against various bacteria and fungi.
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