title: Alkaloids from the leaves of Daphniphyllum longeracemosum.
abstract: Two new C-21 Daphniphyllum alkaloids, longeracinphyllins A (1) and B (2), have been isolated from the leaves of Daphniphyllum longeracemosum. Longeracinphyllin A (1) is a new daphnilongeranin B type alkaloid with a rearranged alpha,beta-unsaturated ketone group, and the structure is supported by X-ray crystal data. Longeracinphyllin B (2) is a new seco-10,17-daphnilongeranin B type alkaloid.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, People's Republic of China.
authors.forename: Ying-Tong
authors.initials: YT
authors.lastname: Di
authors.forename: Hong-Ping
authors.initials: HP
authors.lastname: He
authors.forename: Yang
authors.initials: Y
authors.lastname: Lu
authors.forename: Ping
authors.initials: P
authors.lastname: Yi
authors.forename: Lin
authors.initials: L
authors.lastname: Li
authors.forename: Li
authors.initials: L
authors.lastname: Wu
authors.forename: Xiao-Jiang
authors.initials: XJ
authors.lastname: Hao
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D002681:China; D018360:Crystallography, X-Ray; D019684:Magnoliopsida / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry
chemical_list: D000470:Alkaloids; C513517:longeracinphyllin A; C513518:longeracinphyllin B