Introducing thiazolidin moiety into the imidazo[1,2-b]pyridazine ring which leads to the presence of three active pharmacophores in a single molecular frame work for the intensified biological activity. A variety of novel imidazo[1,2-b]pyridazine-2-carboxylic acid (4-oxo-2-phenyl-thiazolidin-3-yl)-amides have been synthesized in good to excellent yields. The title compounds were obtained from commercially available imidazo[1,2-b]pyridazine-2- carboxylic acid as starting compound and imidazo[1,2-b]pyridazine-2-carbonyl chloride, imidazo[1,2-b]pyridazine- 2-carboxylic acid hydrazide and imidazo[1,2-b]pyridazine-2-carboxylic acid benzylidene-hydrazide as integral part of the synthesis.
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