Antibacterial and Antioxidant Activities of Syzygium Aromaticum Capparis Spinosa, and Some Novel Acylselenourea and Acylthourea Derivatives

Abstract

This study aims to tested  the antibacterial and antioxidant activities of two different plant extracts which were Syzygium aromaticum and Capparis spinosa, and five novel derivatives, i.e. [4-Nitro-N-((4-(N-(pyrimidin-2-yl) sulfamoyl) phenyl) carbamoselenoyl) Benz amide (1), 4-Methyl-N-((4-(N-(pyrimidin-2-yl) sulfamoyl) phenyl) carbamoselenoyl) Benz amide (2), 4-Methyl-N-((4-(N-(pyrimidin-2-yl) sulfamoyl phenyl) carbamothioyl) Benz amide (3), 4-Nitro-N-((4-nitrophenyl) carbamo selenoyl) Benz amide (4), N-(2,6-dioxo-1,2,3,6-tetrahydropyrimidine-1-carbonoselenoyl)-nitrobenzamide (5)] in six concentrations:1,5, 10,25, 50, and 100 ug/ml of plant extracts and in three concentrations. 500,750 ,1000ug/ml of novel synthesis compounds on gram-positive bacteria (Staphylococcus aureus) and gram-negative bacteria (Escherichia coli). The antibacterial activity was evaluated with antibiotics susceptible and resistant to microorganisms. The 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging technique was used to assess antioxidant activity. The findings showed that Syzygium aromaticum extract and synthesis compound 3 were more effective against Escherichia coli bacteria and less effective against Staphylococcus aureus bacteria, whereas Capparis spinosa extract and synthesis compounds (1, 2, 4, and 5) were more effective against Staphylococcus aureus bacteria and less effective against Escherichia coli bacteria. The oxidation of the synthesis compounds (1, 2, and 3) is effective at concentrations of 500, 750, and 1000 and ineffective at concentrations of 50, 100, and 250, while compound 4 is effective at concentrations of 100, 250, 500, 750, and 1000 and ineffective at concentrations of 50 only. Compound 5 was effective at all concentrations.