SUMMARY
Aim. To find compounds with the antimicrobial activity in the series of N,N’-bis(spiroindole-3,3’-pyrrolo[3,4-c] pyrrol-2a’,5a’-dihydro-2,2’,6’(1H,1’H,5’H)-trione) derivatives.Materials and methods. The antimicrobial activity was studied by the agar diffusion method.Results and discussion. The antimicrobial screening data revealed the pronounced biological activity of ethylene-N,N’-bis(spiroindole-3,3’-pyrrolo[3,4-c]pyrrol-2a’,5a’-dihydro-2,2’,6’(1H,1’H,5’H)-trione) derivatives against gramnegative (Proteus vulgaris, Escherichia coli, Pseudomonas aeruginosa) and grampositive (Staphylococcus aureus, Bacillus subtilis) bacteria and as well as against Candida albicans fungi.Conclusions. The antibacterial activity of ethylene-N,N’-bis(spiroindole-3,3’-pyrrolo[3,4-c]pyrrol-2a’,5a’-dihydro-2,2’,6’(1H,1’H,5’H)-trione) derivatives has been studied. The compounds with a significant level of the antimicrobial activity against gramnegative bacteria (Proteus vulgaris, Escherichia coli, Pseudomonas aeruginosa), grampositive bacteria (Staphylococcus aureus, Bacillus subtilis), as well as against fungi (Candida albicans) have been found.According to the data of the microbiological screening the most active compounds appeared to be ethylene-N,N’-bis(spiroindole-3,3’-pyrrolo[3,4-c]pyrrol-2a’,5a’-dihydro-2,2’,6’(1H,1’H,5’H)-trione) 1 and ethylene-N,N’-bis(spiroindole-3,3’-pyrrolo[3,4-c]pyrrol-5'-methyl-2a’,5a’-dihydro-2,2’,6’(1H,1’H,5’H)-trione) 2.