BIS-THIOUREA BEARING ARYL AND AMINO ACIDS SIDE CHAINS AND THEIR ANTIBACTERIAL ACTIVITIES

A series of symmetrical 1,3-bis thiourea 1a-e and 1,4-bis thiourea derivatives 2a-e have been successfully synthesized from the reactions of amines with 3-acetylbenzoyl isothiocyanate and 4-acetylbenzoyl isothiocyanate, respectively. All the synthesized compounds were characterized by FT-IR spectroscopy and H-1 and C-13 NMR spectroscopy. The compounds were screened for their antibacterial activity by turbidimetric method using gram-negative bacteria (E. coli ATCC 8739) using turbidimetric method. The newly synthesized bis-thiourea derivatives bearing aryl side chains showed good antibacterial activity against E. coli. The effect of the molecular structure of the synthesized compounds on the antibacterial activity is discussed.