title: Sterically hindered carotenoids with 3Z, 5Z configuration from the seeds of oriental bitter sweet, Celastrus orbiculatus.
abstract: Sterically hindered cis-carotenoids 1 and 2 were isolated from seeds of the oriental bitter sweet, Celastrus orbiculatus. Their structures were determined to be (3'Z, 5'Z)-celaxanthin and (3'Z, 5'Z)-torulene, respectively, on the basis of spectroscopic data and iodine-catalyzed stereomutation. This is the first report on carotenoids with a 3Z, 5Z configuration.
authors.affiliation: Research Institute for Production Development, 15 Shimogamo-morimoto-cho, Sakyo-ku, Kyoto 606-0805, Japan. maoka@mbox.kyoto-inet.or.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Maoka
mesh_terms: D002338:Carotenoids / Q000737:chemistry* / Q000302:isolation & purification*; D031247:Celastrus / Q000737:chemistry*; D007564:Japan; D015394:Molecular Structure; D012639:Seeds / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: C541854:celaxanthin; D002338:Carotenoids; C078922:torulene