Summary
1. The PMR spectra of 13 natural stilbenes have been studied.
2. The dominating role of π-electron interaction of the fragments of the stilbene molecule in the screening of the aromatic and olefinic protons has been shown. A series of increments presenting interest for determining the structure of stilbene compounds is proposed.
3. It has been established that the nature and nature and number of the substituents in the aglycone part of the molecule have no influence on the screening of the anomeric proton of glycosidated stilbenes, but it does depend on the position of attachment of the carbohydrate fragment.
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A. A. Zhdanov Irkutsk State University. Irkutsk Institute of Organic Chemistry, Siberian Branch of the Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 3–10, January–February, 1976.
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Kalabin, G.A., Kushnarev, D.F., Tyukavkina, N.A. et al. PMR spectra of natural stilbene compounds. Chem Nat Compd 12, 1–7 (1976). https://doi.org/10.1007/BF00570166
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DOI: https://doi.org/10.1007/BF00570166