title: New pavine N-oxide alkaloids from the stem bark of Cryptocarya chinensis Hemsl.
abstract: Three new pavine N-oxide alkaloids, (-)-isocaryachine-N-oxide B, (+)-caryachine-N-oxide, (-)-caryachine-N-oxide, and a new isoquinoline alkaloid, 6,7-methylenedioxy-N-methylisoquinoline together with 11 known alkaloids were isolated and characterized from the stem bark of Cryptocarya chinensis. The structures of the isolated compounds were determined by spectral methods. The stereochemistry of pavine-N-oxide alkaloids is also discussed.
authors.affiliation: Department of Chemistry, National Cheng Kung University, Tainan, Taiwan, ROC.
authors.forename: Fu-Wen
authors.initials: FW
authors.lastname: Lin
authors.forename: Jhi-Joung
authors.initials: JJ
authors.lastname: Wang
authors.forename: Tian-Shung
authors.initials: TS
authors.lastname: Wu
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D019770:Lauraceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation
chemical_list: D000470:Alkaloids