Summary
The visnagans fromAmmi visnaga L. and the stereoisomeric khellactones and methyl-khellactones derived from them were transformed into seselin and umbelli-ferone-8-aldehyde. These transformations and other degradations lead to revised formulas for these natural compounds.
Literatur
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Diese Reaktion wurde schon vonE. Späth, W. Gruber undO. Matzke beschrieben (loc. cit.).
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Bencze, W., Halpern, O. & Schmid, H. Über die Konstitution der Visnagane und Khellactone ausAmmi visnaga L.. Experientia 12, 137–138 (1956). https://doi.org/10.1007/BF02170599
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DOI: https://doi.org/10.1007/BF02170599