Synthesis, Antibacterial, Thrombolytic and Cytotoxic Evaluation of Substituted and Un-substituted Selenium-n-heterocyclic Carbene Adducts

N-heterocyclic carbene salts bearing alkyl substituents (1-8) and their selenium N-heterocyclic carbene adducts (9-12) were synthesized and characterized by elemental analysis, FT-IR, NMR (1HNMR, 13CNMR) spectroscopic techniques. All the adducts were found to be stable in air and moisture at room temperature. Compounds (5-12) were evaluated against Bacillus subtilis Macrococcus brunensis and Bacillus cereus in vitro. The biological assay revealed that antibacterial activity of Selenium-N-heterocyclic carbene adducts are comparatively better than the salts. MIC and inhibition zone values showed that Bacillus subtilis is more active to selenium adducts (9-12) than Macrococcus brunensis and Bacillus cereus whereas opposite in the salts (5-8). In vitro studies of hemolysis and thrombolysis demonstrated that the synthesized compounds are innocuous for pre-clinical trials to mouse blood.