title: Ansaetherone, a new radical scavenger from Streptomyces sp.
abstract: We identified a new radical scavenger, ansaetherone (C26 H33 NO7), from a culture of the Streptomyces sp. USF-4727 strain. In our previous study, it was shown that this strain produced four lipoxygenase inhibitors, tetrapetalones A, B, C and D. The chemical structure of ansaetherone was elucidated by the spectroscopic method, indicating that this compound was constructed with an aglycon and a sugar moiety. This chemical structure suggested that ansaetherone was related to the tetrapetalones. This finding provided information regarding tetrapetalone biosynthesis. Ansaetherone showed radical scavenging activity with an ED50 value of 300 microM in our assay.
authors.affiliation: School of Food, Agricultural and Environmental Sciences, Miyagi University, Miyagi, Japan. komoda@myu.ac.jp
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Komoda
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Akasaka
authors.forename: Akira
authors.initials: A
authors.lastname: Hirota
mesh_terms: D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D006576:Heterocyclic Compounds, 4 or More Rings / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D020128:Inhibitory Concentration 50; D016859:Lipoxygenase Inhibitors / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D015394:Molecular Structure; D013302:Streptomyces / Q000737:chemistry* / Q000187:drug effects
chemical_list: D006027:Glycosides; D006576:Heterocyclic Compounds, 4 or More Rings; D016859:Lipoxygenase Inhibitors; C533661:ansaetherone