title: Synthesis and antioxidative activity of 3',4',6,7-tetrahydroxyaurone, a metabolite of Bidens frondosa.
abstract: 3',4',6,7-Tetrahydroxyaurone (1a), an aurone isolated from Bidens frondosa, and five analogues (1b-1f) were synthesized from pyrogallol in three steps. The antioxidative activity of 1a-1f was determined by the superoxide free radical and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging methods.
authors.affiliation: Laila Impex R & D Centre, Unit I, Phase III, Jawahar Autonagar, Vijayawada 520 007, India.
authors.forename: Somepalli
authors.initials: S
authors.lastname: Venkateswarlu
authors.forename: Gopala K
authors.initials: GK
authors.lastname: Panchagnula
authors.forename: Gottumukkala V
authors.initials: GV
authors.lastname: Subbaraju
mesh_terms: D000975:Antioxidants / Q000138:chemical synthesis*; D001572:Benzofurans / Q000032:analysis / Q000138:chemical synthesis*; D031176:Bidens / Q000737:chemistry*; D001713:Biphenyl Compounds / Q000737:chemistry*; D006834:Hydrazines / Q000737:chemistry*; D010851:Picrates; D011748:Pyrogallol / Q000138:chemical synthesis / Q000737:chemistry*; D013481:Superoxides / Q000737:chemistry*
chemical_list: C499976:3',4',6,7-tetrahydroxyaurone; D000975:Antioxidants; D001572:Benzofurans; D001713:Biphenyl Compounds; D006834:Hydrazines; D010851:Picrates; C486837:aurone; D011748:Pyrogallol; D013481:Superoxides; C004931:1,1-diphenyl-2-picrylhydrazyl