13C-NMR Chemical Shifts in 1,3-Benzazoles as a Tautomeric Ratio Criterion
13C-NMR Chemical Shifts in 1,3-Benzazoles as a Tautomeric Ratio Criterion
Benzimidazole is an important heterocyclic fragment, present in many biologically active compounds with a great variety of therapeutic purposes. Most of the benzimidazole activities are explained through the existence of 1,3-tautomeric equilibrium. As the binding affinity of each tautomer to a protein target depends on an established bioactive conformation, the effect of tautomers on the ligand protein binding mechanism is determinant. In this work, we searched and analyzed a series of reported... More... |
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