title: Decaspirones F-I, bioactive secondary metabolites from the saprophytic fungus Helicoma viridis.
abstract: Decaspirones F-H (1-3), three new spirobisnaphthalene derivatives, and one new non-spirobisnaphthalene, decaspirone I (4), have been isolated from cultures of an isolate of the saprophytic fungus Helicoma viridis. The structures of these compounds were determined mainly by analysis of their NMR spectroscopic data. The absolute configuration of decaspirone F (1) was established by X-ray crystallographic analysis of its mono-bromobenzoate derivative. In standard disk assays, compounds 1-4 showed modest activity against Pseudomonas aeruginosa (multiple antibiotic-resistant strain, ATCC 27853), and decaspirone G (2) also displayed activity against Lactococcus lacti (PCM 2379).
authors.affiliation: Key Laboratory of Systematic Mycology and Lichenology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080, People's Republic of China.
authors.forename: Hejiao
authors.initials: H
authors.lastname: Hu
authors.forename: Huijuan
authors.initials: H
authors.lastname: Guo
authors.forename: Erwei
authors.initials: E
authors.lastname: Li
authors.forename: Xingzhong
authors.initials: X
authors.lastname: Liu
authors.forename: Yuguang
authors.initials: Y
authors.lastname: Zhou
authors.forename: Yongsheng
authors.initials: Y
authors.lastname: Che
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002681:China; D018360:Crystallography, X-Ray; D005658:Fungi / Q000737:chemistry*; D013294:Lactococcus lactis / Q000187:drug effects; D008968:Molecular Conformation; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D019906:Nuclear Magnetic Resonance, Biomolecular; D011550:Pseudomonas aeruginosa / Q000187:drug effects; D013141:Spiro Compounds / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D009281:Naphthalenes; D013141:Spiro Compounds