Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Alkaloids from the Fruits of Stephania japonica MIERS. I. Structure of Stephabenine : A New Hasubanan Ester-Ketal Alkaloid
SACHIKO KONDO, MATAO MATSUI, YASUO WATANABE
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Keywords: N, O-dimethylstephine
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1983 Volume 31 Issue 8 Pages 2574-2577

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Abstract
A new hasubanan ester-ketal alkaloid, named stephabenine, was isolated from the fresh fruits of Stephania japnica MIERS (Menispermaceae). Alkaline hydrolysis of the new base gave benzoic acid and a basic component, whose proton nuclear magnetic resonance spectrum was identical with that of authentic N, O-dimethylstephine.
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© The Pharmaceutical Society of Japan
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