New Pavine N-Oxide Alkaloids from the Stem Bark of Cryptocarya chinensis H<small>EMSL</small>.

Fu-Wen Lin; Jhi-Joung Wang; Tian-Shung Wu

doi:10.1248/cpb.50.157

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New Pavine N-Oxide Alkaloids from the Stem Bark of Cryptocarya chinensis HEMSL.

Fu-Wen Lin, Jhi-Joung Wang, Tian-Shung Wu

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Keywords: Cryptocarya chinensis, Lauraceae, alkaloid, (−)-isocaryachine-N-oxide B, (+)-caryachine-N-oxide, (−)-caryachine-N-oxide

JOURNAL FREE ACCESS

2002 Volume 50 Issue 2 Pages 157-159

DOI https://doi.org/10.1248/cpb.50.157

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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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