title: An improved method for the synthesis of dissymmetric N,N'-disubstituted imidazole-4,5-dicarboxamides.
abstract: Symmetrically and dissymmetrically disubstituted imidazole-4,5-dicarboxamides (I45DCs) have diverse bioactivities and therefore represent useful small molecules for lead structure identification in drug discovery. For this reason, an improved synthesis was developed as a first step in the preparation of greater numbers of analogues. The method involves the transformation of imidazole-4,5-dicarboxylic acid into dissymmetrically disubstituted I45DCs in four steps and in a minimum yield of 51%. This reflects an overall reduction of one synthetic step and a greater than 30% improvement in yield over the known method.
mesh_terms: D000577:Amides / Q000138:chemical synthesis*; D020650:Combinatorial Chemistry Techniques; D007093:Imidazoles / Q000138:chemical synthesis*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D013237:Stereoisomerism
chemical_list: D000577:Amides; D007093:Imidazoles