13C NMR discrimination of regioisomeric bispyrroloquinone/bispyrroloiminoquinone ring systems

Stefan Chassaing1, Evelyne Delfourne

  • 1Université Paul Sabatier, UMR CNRS 5068, Laboratoire de Synthèse et Physicochimie de Molécules d'Intérêt Biologique, 118 Route de Narbonne, 31062 Toulouse Cédex 9, France.

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