title: Structure of three new carotenoids with a 3-methoxy-5-keto-5,6-seco-4,6-cyclo-beta end group from the seeds of Pittosporum tobira.
abstract: Three new carotenoids with a 3-methoxy-5-keto-5,6-seco-4,6-cyclo-beta end group (1-3) have been isolated from the seeds of Pittosporum tobira. Their structures were elucidated by detailed analyses of nuclear magnetic resonance and UV data.
authors.affiliation: Kyoto Pharmaceutical University, Japan. fujiwara@mb.kyoto-phu.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Fujiwara
authors.forename: H
authors.initials: H
authors.lastname: Maruwaka
authors.forename: F
authors.initials: F
authors.lastname: Toki
authors.forename: K
authors.initials: K
authors.lastname: Hashimoto
authors.forename: T
authors.initials: T
authors.lastname: Maoka
mesh_terms: D002338:Carotenoids / Q000737:chemistry* / Q000302:isolation & purification; D019906:Nuclear Magnetic Resonance, Biomolecular; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D012639:Seeds / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; D002338:Carotenoids