Abstract
Synthesis of the 7,8′-dicoumarinyl ethers: 7-methoxy-7′,8-oxydicoumarin and 6,7-dimethoxy-7′,8-oxydicoumarin, established that the structures of fatagarine and oreojasmine for which these two structures have been proposed, have to be revised. Synthesis of 7-methoxy-5,7′-oxydicoumarin and 8-methoxy-7,7′-oxydicoumarin exclude the possibility of these dicoumarinyl ether structures for fatagarine.
Zusammenfassung
Durch die Synthese der 7,8-Dicumarinylether: 7-Methoxy-7′,8-oxydicumarin und 6,7-Dimethoxy-7′,8-oxydicumarin, ließ sich nachweisen, daß die für das Fatagarin und Oreojasmin vorgeschlagenen Strukturen revidiert werden müssen. Die Darstellung des 8-Methoxy-7,7′-oxydicoumarin und 7-Methoxy-5,7′-oxydicumarin schließen die Möglichkeit dieser Strukturen für das Fatagarin aus.
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Reisch, J., Wickramasinghe, A. & Kumar, V. Natural product chemistry. Part 121. Synthesis of dicoumarinyl ethers with the structures proposed for fatagarine and oreojasmine. Monatsh Chem 119, 1333–1339 (1988). https://doi.org/10.1007/BF00808314
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DOI: https://doi.org/10.1007/BF00808314