Summary
The leaves ofFraxinus mandschurica Rupr. and the bark ofF. potamophila Herd. have yielded esculetin, fraxinol, and a new coumarin C10H8O5, mp 228–230°C which we have called isofraxetin. On the basis of NMR and UV spectroscopy it has been established that isofraxetin is 5,7-dihydroxy-7-methoxycoumarin.
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Additional information
Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR. Institute of Chemistry, Academy of Sciences of the Turkmen SSR. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 493–497, July–August, 1973.
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Artem'eva, M.V., Nikonov, G.K. & Karryev, M.O. Coumarins of Fraxinus mandschurica and F. potamophila. Chem Nat Compd 9, 465–467 (1973). https://doi.org/10.1007/BF00568630
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DOI: https://doi.org/10.1007/BF00568630