title: Synthesis and in vitro antimicrobial studies of medicinally important novel N-alkyl and N-sulfonyl derivatives of 1-[bis(4-fluorophenyl)-methyl]piperazine.
abstract: A series of novel substituted 1-[bis(4-fluorophenyl)-methyl]piperazine derivatives (4a-g) and (5h-m) have been synthesized. The synthesized compounds were characterized by IR and 1H NMR. All the synthesized compounds were evaluated in vitro for their efficacy as antimicrobial agents against representative strains of Gram-positive (Staphylococcus aureus ATCC 25953, Streptococcus pneumoniae ATCC 49619, Bacillus cereus 11778, and Bacillus subtilis 6051) and Gram-negative bacteria (Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 2853, Proteus vulgaris ATCC 2853, and Salmonella typhi ATCC 9484) by paper disc diffusion and microdilution methods. Among the newly synthesized compounds 4e, 5l, and 5m showed potent antimicrobial activities, when compared to the standard drug.
authors.affiliation: Department of Studies in Chemistry, University of Mysore, Manasagangothri, Mysore 570006, India.
authors.forename: J N
authors.initials: JN
authors.lastname: Narendra Sharath Chandra
authors.forename: C T
authors.initials: CT
authors.lastname: Sadashiva
authors.forename: C V
authors.initials: CV
authors.lastname: Kavitha
authors.forename: K S
authors.initials: KS
authors.lastname: Rangappa
mesh_terms: D000478:Alkylation; D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D006571:Heterocyclic Compounds / Q000737:chemistry; D007201:Indicator Dilution Techniques; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D009391:Nephelometry and Turbidimetry; D010879:Piperazines / Q000138:chemical synthesis* / Q000494:pharmacology*; D013055:Spectrophotometry, Infrared; D013329:Structure-Activity Relationship
chemical_list: D000890:Anti-Infective Agents; D006571:Heterocyclic Compounds; D007202:Indicators and Reagents; D010879:Piperazines