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Albartin—a new sesquiterpene-coumarin ether fromArtemisia alba

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Albartin — ein neuer Sesquiterpen-Cumarin-Ether ausArtemisia alba (Kurze Mitteilung)

  • Organische Chemie Und Biochemie
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Abstract

A new sesquiterpene isofraxidin ether (isofraxidin=7-hydroxy-6,8-dimethoxy-coumarin) was isolated from the roots ofArtemisia alba and characterized by means of1H-nmr,13C-nmr, ms, uv, and ir. Albartin is an exomethylene isomer of 3-acetyloxy-drimartol isofraxidin ether with -OAc axial and -CH2OAr equatorial. The chemosystematic significance of this class of compounds within the genusArtemisia is briefly discussed.

Zusammenfassung

Aus den Wurzeln vonArtemisia alba wurde ein neuer Sesquiterpen-Isofraxidin Ether (Isofraxidin = 7-Hydroxy-6,8-dimethoxy-cumarin) isoliert und mittels1H-NMR,13C-NMR, MS, UV und IR charakterisiert. Albartin ist ein exo-Methylen-Isomer von 3-Acetyloxy-drimartol-isofraxidin-ether mit-OAc axial und -CH2OAr equatorial. Die chemosystematische Bedeutung dieser Verbindungsklasse innerhalb der GattungArtemisia wird kurz diskutiert.

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References

  1. Part 2 in the series “Naturally Occurring Sesquiterpene-Coumarin Ethers”.

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  4. w 1/2=9 Hz is characteristic for H eq (OR ax,R=H orAc),w 1/2=17–19 Hz for H ax (OR eq) (see Ref.2).

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Authors and Affiliations

  1. Institute of Botany, University of Vienna, A-1030, Wien, Austria

    Harald Greger

  2. Institute of Organic Chemistry, University of Vienna, A-1090, Wien, Austria

    Ernst Haslinger & Otmar Hofer

Authors
  1. Harald Greger
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  2. Ernst Haslinger
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  3. Otmar Hofer
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Greger, H., Haslinger, E. & Hofer, O. Albartin—a new sesquiterpene-coumarin ether fromArtemisia alba . Monatsh Chem 113, 375–379 (1982). https://doi.org/10.1007/BF00799565

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  • DOI: https://doi.org/10.1007/BF00799565

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