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NMR spectra of coumestans

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The NMR spectra of 12 coumestans in trifluoroacetic acid have been studied. The same features of the chemical shifts of the ring protons are found in the spectra of the coumestans as in the spectra of the coumarins.

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Literature cited

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    M. E. Perel'son, Yu. N. Sheinker, G. P. Syrova, and K. F. Turchin, Khim. Prirodn. Soedin., 6 (1970).

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    V. P. Zvolinskii, M. E. Perel'son, and Yu. N. Sheinker, Teoret. i Éksperim. Khim.,5, 767 (1969).

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    M. E. Perel'son, Yu. N. Sheinker, and G. P. Syrova, Khim. Prirodn. Soedin., 576 (1971).

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Additional information

Institute of Chemistry, Academy of Sciences of the Moldavian SSR. Scientific-Research Institute of Medicinal Plants. S. Ordzhonikidze All-Union Scientific-Research Institute of Pharmaceutical Chemistry. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 436–439, July–August, 1972.

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Simonova, L.L., Shamshurin, A.A., Perel'son, M.E. et al. NMR spectra of coumestans. Chem Nat Compd 8, 435–438 (1972). https://doi.org/10.1007/BF00563662

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  • Coumarin
  • Trifluoroacetic Acid
  • Weak Field
  • Ring Proton
  • Basic Skeleton