title: Yuzurimine-type alkaloids from Daphniphyllum yunnanense.
abstract: Five new yuzurimine-type alkaloids, yunnandaphnines A-E (2-6), together with two known analogues, macrodaphniphyllamine (1) and calycinine A (7), have been isolated from the leaves and twigs of Daphniphyllum yunnanense. The structures of the new alkaloids were elucidated by spectroscopic methods. Yunnandaphnine E (6) is a novel heptacyclic yuzurimine-type alkaloid with an oxazine ring.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, 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: Chun-Shun
authors.initials: CS
authors.lastname: Li
authors.forename: Jun-Mian
authors.initials: JM
authors.lastname: Tian
authors.forename: Shu-Zhen
authors.initials: SZ
authors.lastname: Mu
authors.forename: Shun-Lin
authors.initials: SL
authors.lastname: Li
authors.forename: Suo
authors.initials: S
authors.lastname: Gao
authors.forename: Xiao-Jiang
authors.initials: XJ
authors.lastname: Hao
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000145:classification / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification*; D006576:Heterocyclic Compounds, 4 or More Rings / Q000737:chemistry* / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010078:Oxazines / Q000737:chemistry* / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D031995:Saxifragaceae / Q000737:chemistry*
chemical_list: D000470:Alkaloids; D004365:Drugs, Chinese Herbal; D006576:Heterocyclic Compounds, 4 or More Rings; D010078:Oxazines; C516385:yunnandaphnine E