title: A new biologically active flavonol glycoside from Psoralea corylifolia (Linn.).
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.
authors.affiliation: Department of Chemistry, Natural Products Laboratory, Dr. H. S. Gour University Sagar, Sagar, M.P. 470002, India. rnyadava@rediffmail.com
authors.forename: R N
authors.initials: RN
authors.lastname: Yadava
authors.forename: Vikash
authors.initials: V
authors.lastname: Verma
mesh_terms: D001419:Bacteria / Q000187:drug effects; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D005658:Fungi / Q000187:drug effects; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D029907:Psoralea / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D013057:Spectrum Analysis
chemical_list: C504843:3,5,3',4'-tetrahydroxy-7-methoxyflavone-3'-O-alpha-L-xylopyranosyl(1-3)-O-alpha-L-arabinopyranosyl(1-4)-O-beta-D-galactopyranoside; D044948:Flavonols; D006027:Glycosides