ISSN:
0030-4921
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The complete assignment of the proton NMR spectra of several α-, β- and γ- naphthoflavones at 100 MHz using Eu(fod), and double resonance experi- ments has been carried out. The compounds were found to associate at the carbonyi oxygen, by analogy with flavones where complete structural assignment can be attained using Pr(fod)3, at 60MHz. The three types of naphthoflavones can be distinguished by observation of the quantitative lanth- anide-induced shifts at H-3 and/or H-5, combined with their chemical shift values in the absence of shift reagent.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1270220217
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