Synthesis and antimicrobial activity of ethyl N-aryl-S-(triphenylstannyl)isothiocarbamates

Five ethyl N-aryl-S-(triphenylstannyl)isothiocarbamates were synthesized by the reaction of triphenyltin iodide with the appropriate ethyl N-arylthiocarbamate in the presence of triethylamine. The IR spectrum of each compound was obtained over the 4000--200-cm--1 range, and some bands were assigned. These new compounds were found to be generally better antifungal agents than the previously tested N-substituted N'-cyano-S-(triphenylstannyl)isothioureas. The new compounds were also investigated for antibacterial activity and were especially inhibitory toward Gram-positive species. Except for their lower activity toward Bacillus subtilis, their antibacterial activity was identical to the previously tested N-phenyl-N'-cyano-S-(triphenylstannyl)isothiourea.