title: Daphlongeranines A and B, two novel alkaloids possessing unprecedented skeletons from Daphniphyllum longeracemosum.
abstract: Two novel alkaloids, daphlongeranines A (1) and B (2), with an unprecedented ring system, were isolated from the fruits of Daphniphyllum longeracemosum. Their unique structures and relative stereochemistries were established on the basis of spectroscopic and single-crystal diffraction analysis. The proposed biosynthetic pathway was also discussed. Compounds 1 and 2 showed weak inhibition on platelet aggregation.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, PRC.
authors.forename: Chun-Shun
authors.initials: CS
authors.lastname: Li
authors.forename: Ying-Tong
authors.initials: YT
authors.lastname: Di
authors.forename: Hong-Ping
authors.initials: HP
authors.lastname: He
authors.forename: Suo
authors.initials: S
authors.lastname: Gao
authors.forename: Yue-Hu
authors.initials: YH
authors.lastname: Wang
authors.forename: Yang
authors.initials: Y
authors.lastname: Lu
authors.forename: Jia-Liang
authors.initials: JL
authors.lastname: Zhong
authors.forename: Xiao-Jiang
authors.initials: XJ
authors.lastname: Hao
mesh_terms: D000470:Alkaloids / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D031995:Saxifragaceae / Q000737:chemistry*
chemical_list: D000470:Alkaloids; C522225:daphlongeranine A; C522226:daphlongeranine B