Chemistry of Natural Compounds p. 270 - 276 (1982)
Update date:2022-08-30
Topics:
Abyshev, A. Z.
Zmeikov, V. P.
The results are given of a study of the 13C NMR spectra of the new terpenoid coumarin bungeidiol (I) and of the products of its transformation (II) and (III) and some model compounds (IV-VII).On the basis of the results obtained from these 13C NMR spectra and with the use of additive contributions depending on the nature and positions of various substituents (hydroxy and methoxy groups) in the aromatic ring, the structure (I) has been confirmed and a complete assignmant of the signals of all the carbon atoms both in the coumarin ring and in the aliphatic part of the molecule of (I) has been made.
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