title: Cipadonoid A, a novel limonoid with an unprecedented skeleton, from Cipadessa cinerasecns.
abstract: Cipadonoid A ( 1), a novel limonoid with an unprecedented skeleton, was isolated from the leaves of Cipadessa cinerasecns. Its structure and relative configuration were determined by spectroscopic analysis and computer modeling. 1 represents a new type of limonoid, characterized by a rearranged tetrahydropyranyl ring B incorporating usually exocyclic C-30. A possible biosynthetic pathway of 1 was also proposed.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, PR China.
authors.forename: Xin
authors.initials: X
authors.lastname: Fang
authors.forename: Ying-Tong
authors.initials: YT
authors.lastname: Di
authors.forename: Hong-Ping
authors.initials: HP
authors.lastname: He
authors.forename: Hai-Yang
authors.initials: HY
authors.lastname: Liu
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zhang
authors.forename: Yan-Li
authors.initials: YL
authors.lastname: Ren
authors.forename: Zhu-Lin
authors.initials: ZL
authors.lastname: Gao
authors.forename: Suo
authors.initials: S
authors.lastname: Gao
authors.forename: Xiao-Jiang
authors.initials: XJ
authors.lastname: Hao
mesh_terms: D002942:Circular Dichroism / Q000379:methods; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification; D036701:Limonins / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods / Q000592:standards; D029582:Meliaceae / Q000737:chemistry*; D008956:Models, Chemical; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012015:Reference Standards; D013056:Spectrophotometry, Ultraviolet / Q000379:methods
chemical_list: D004365:Drugs, Chinese Herbal; D036701:Limonins; C529922:cipadonoid A