Alkaloids of the wood of Cryptocarya chinensis.
Four new pavine alkaloids, (+)-eschscholtzidine-N-oxide (1), (-)-12-hydroxycrychine (2), (-)-12-hydroxy-O-methylcaryachine (3), and (-)-N-demethylcrychine (4), and four new proaporphine alkaloids, isocryprochine (5), prooxocryptochine (6), isoamuronine (7), and (+)-8,9-dihydrostepharine (8), together with nine known compounds were isolated from an ethanol extract of the wood of Cryptocarya chinensis. Their structures were elucidated by spectral analysis (NMR and MS), and the structures of 2 and 5 were confirmed by X-ray crystallography.
Wu
T S
TS
Department of Chemistry, National Cheng Kung University, Tainan, Taiwan, Republic of China. tswu@mail.ncku.edu.tw
Lin
F W
FW
D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D018360:Crystallography, X-Ray; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D019770:Lauraceae / Q000737:chemistry*; D013058:Mass Spectrometry; D008516:Medicine, Chinese Traditional; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013624:Taiwan; D014934:Wood
D000470:Alkaloids; D004365:Drugs, Chinese Herbal