Bis(azolyl)sulfonamidoacetamides: Synthesis and bioassay

Azole derivatives are valuable precursors in pharmacological arena. In fact, oxazole, thiazole and imidazole containing scaffolds display a variety of biological activities such as antitumor,1 antibacterial,2 antiviral,3 antioxidant,4,5 anti-inflammatory6 and antifungal7 activities. Azoles are also prominant molecules in various biochemical and synthetic transformations. Based on the importance of these heteroaromatics and also our interest to link the heterocycle molecules with a variety of functional groups we have synthesized a new class of bis(azolyl)sulfonamide acetamides from azolylsulfonylamines and azolylchloroacetamides in the presence of DMAP under ultrasonication and studied their antimicrobial activity. The compounds chloro substituted bis(thiazoles) (6c) and chloro substituted imidazolyl thiazoles (7c) displayed excellent antibacterial activity against B. subtilis greater than the standard drug, Chloramphenicol. Whereas 7c also showed excellent antifungal activity on A. niger higher than the standard drug, Ketoconazole.