title: Nakijiquinones G-I, new sesquiterpenoid quinones from marine sponge.
abstract: Three new sesquiterpenoid quinones, nakijiquinones G-I (1-3), containing a different amino group derived from amino acids have been isolated from Okinawan marine sponges of the family Spongiidae, and the structures and relative stereochemistry of 1-3 were elucidated on the basis of the spectral data. Nakijiquinones G-I (1-3) showed modest cytotoxicity and inhibitory activity against HER2 kinase, while nakijiquinone H (2) exhibited antimicrobial activity.
authors.affiliation: Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
authors.forename: Yohei
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Takaaki
authors.initials: T
authors.lastname: Kubota
authors.forename: Junji
authors.initials: J
authors.lastname: Ito
authors.forename: Yuzuru
authors.initials: Y
authors.lastname: Mikami
authors.forename: Jane
authors.initials: J
authors.lastname: Fromont
authors.forename: Jun'ichi
authors.initials: J
authors.lastname: Kobayashi
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000302:isolation & purification* / Q000494:pharmacology; D006801:Humans; D051379:Mice; D008826:Microbial Sensitivity Tests; D019906:Nuclear Magnetic Resonance, Biomolecular; D009904:Optical Rotation; D011161:Porifera / Q000737:chemistry*; D011809:Quinones / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000900:Anti-Bacterial Agents; D011809:Quinones; D012717:Sesquiterpenes