title: Synthesis, antimicrobial, and antitumor activity of a series of palladium(II) mixed ligand complexes.
abstract: Mixed ligand complexes of cisdichloromethioninepalladium(II) with 2-mercaptopyrimidine and 2-aminopyrimidine were synthesized and characterized by elemental analysis, conductivity data, infrared, and 1H NMR and 13C NMR spectra. In these mixed ligand complexes methionine coordinates to palladium through amino nitrogen and sulphur, thus leaving a free carboxylic acid group. The pyrimidine ligand coordinates to metal ion through N3. Mixed ligand complexes of cisdichloroethioninepalladium(II) with cytosine and guanosine were synthesized and characterized earlier. All the above mixed ligand complexes were screened for antimicrobial activity against Vibrio parahaemolyticus, Pseudomonas aeruginosa, Proteus vulgaris, Escherichia coli, Shigella flexnerri, Salmonella typhii, Klebsella pneumoniae, and Vibrio cholerae. It was found that complexes [Pd(meth)Cl2]: [Pd(meth)(2merpy)Cl]Cl; [Pd(meth)(2ampy)Cl]Cl; [Pd(ethio)Cl2]; [Pd(ethio)(cyt)Cl]Cl; and [Pd(ethio)(guo)Cl]Cl showed broad spectrum antimicrobial activity against all the human pathogens tested, however [Pd(meth)(2merpy)Cl]Cl eliminated plasmid with 100% frequency. These complexes have also been screened in vitro for antitumor activity against Hela (Epidermoid Carcinoma Cervix) and CHO cell lines. An excellent correlation between the antitumor activity of Pd(II) complexes and their ability to cure plasmids exists.
authors.affiliation: Department of Chemistry, Osmania University, Hyderabad, India.
authors.forename: B T
authors.initials: BT
authors.lastname: Khan
authors.forename: J
authors.initials: J
authors.lastname: Bhatt
authors.forename: K
authors.initials: K
authors.lastname: Najmuddin
authors.forename: S
authors.initials: S
authors.lastname: Shamsuddin
authors.forename: K
authors.initials: K
authors.lastname: Annapoorna
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D001412:Bacillus subtilis / Q000187:drug effects; D001419:Bacteria / Q000187:drug effects*; D016466:CHO Cells; D002470:Cell Survival / Q000187:drug effects; D006224:Cricetinae; D006367:HeLa Cells; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D010165:Palladium / Q000494:pharmacology*; D011743:Pyrimidines / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D000970:Antineoplastic Agents; D011743:Pyrimidines; D010165:Palladium