80677-30-1Relevant academic research and scientific papers
Analysis of the Tautomeric Structures of Auronols by 13C N.m.r. and Comparison with the Isomeric Flavonols
Pelter, Andrew,Ward, Robert S.,Haensel, Rudolf,Khaliefi, Faies
, p. 3182 - 3185 (1981)
The 13C n.m.r. spectra of a series of auronols and flavonols have been analysed in order to determine the tautomeric structures of the auronols and to distinguish between the two series.By using a specifically 13C labelled auronol sample, together with coupling constants, changes on addition of D2O, and solvent-shift data, it has been shown that auronol and 6-substituted auronols exist in solution as the 2-benzoyl-3-hydroxybenzofurans whereas 4,6-dihydroxyauronol exists as a mixture of the E- and Z-7'-hydroxyaurones.
