New pavine N-oxide alkaloids from the stem bark of Cryptocarya chinensis Hemsl |
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| Authors: | Lin Fu-Wen Wang Jhi-Joung Wu Tian-Shung |
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| Institution: | Department of Chemistry, National Cheng Kung University, Tainan, Taiwan, ROC. |
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| 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. |
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