New pavine N-oxide alkaloids from the stem bark of Cryptocarya chinensis Hemsl.
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.
Lin
Fu-Wen
FW
Department of Chemistry, National Cheng Kung University, Tainan, Taiwan, ROC.
Wang
Jhi-Joung
JJ
Wu
Tian-Shung
TS
D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D019770:Lauraceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation
D000470:Alkaloids