[Potential virostatics. Part 3: NMR Studies in quinoxalines and s-triazolo (4,3-a) quinoxalines (author's transl)].

Examples of different tautomeric forms were detected in a series of modified quinoxalines by means of nmr spectrometry. Apart from tautomeric equilibria, certain specially favoured conformers may play a part in biological systems, as illustrated by an example.