title: New polyisoprenylated benzophenones from Venezuelan propolis.
abstract: Two new polyisoprenylated benzophenones, 18-ethyloxy-17-hydroxy-17,18-dihydroscrobiculatone A and 18-ethyloxy-17-hydroxy-17,18-dihydroscrobiculatone B, together with the known scrobiculatones A and B, were isolated from Venezuelan propolis. The scrobiculatones A and B showed significant antibacterial activity and moderate toxicity to Artemia salina nauplii.
authors.affiliation: Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria.
authors.forename: Boryana
authors.initials: B
authors.lastname: Trusheva
authors.forename: Milena
authors.initials: M
authors.lastname: Popova
authors.forename: Hristo
authors.initials: H
authors.lastname: Naydenski
authors.forename: Iva
authors.initials: I
authors.lastname: Tsvetkova
authors.forename: Jose
authors.initials: J
authors.lastname: Gregorio Rodriguez
authors.forename: Vassya
authors.initials: V
authors.lastname: Bankova
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D001156:Artemia / Q000187:drug effects; D001577:Benzophenones / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D006801:Humans; D008519:Medicine, Traditional; D008826:Microbial Sensitivity Tests; D008517:Phytotherapy; D010851:Picrates / Q000737:chemistry; D010936:Plant Extracts / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D011429:Propolis; D017368:Protein Prenylation; D013211:Staphylococcus aureus / Q000187:drug effects*; D014687:Venezuela
chemical_list: D000900:Anti-Bacterial Agents; D001577:Benzophenones; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D010851:Picrates; D010936:Plant Extracts; D011429:Propolis; C004931:1,1-diphenyl-2-picrylhydrazyl