title: Synthesis, spectroscopic, cytotoxic, and DNA binding studies of binuclear 2,2'-bipyridine-platinum(II) and -palladium(II) complexes of meso-alpha,alpha'-diaminoadipic and meso-alpha,alpha'-diaminosuberic acids.
abstract: Four new binuclear complexes of formula [M2(bipy)2(BAA)]Cl2 (where M is Pt(II) or Pd(II), bipy is 2,2'-bipyridine, and BAA is a dianion of meso-alpha-alpha'-diaminoadipic acid (DAA) or meso-alpha,alpha'-diaminosuberic acid (DSA) have been synthesized. These complexes have been characterized by chemical analysis and ultraviolet-visible, infrared, and 1H NMR spectroscopy. The mode of binding of ligands in these complexes has been ascertained by infrared and detailed 1H NMR spectroscopy. These complexes are 1:2 electrolyte in conductivity water. They have also been tested against P388 lymphocytic leukemia cells and their target is DNA molecules. [Pt2(bipy)2(DSA)]Cl2, [Pd2(bipy)2(DSA)Cl2, and [Pd2(bipy)2(DAA)]Cl2 show I.D.50 values comparable or lower than cis-diamminedichloroplatinum(II) and [Pt(bipy)(Ala)]Cl. In addition, binding studies of [Pt2(bipy)2(DSA)]Cl2 and [Pd2(bipy)2(DAA)]Cl2 to calf thymus DNA have been carried out and the mode of binding seems to be hydrogen bonding, as suggested earlier for analogous mononuclear amino acid-DNA complexes.
authors.affiliation: Department of Chemistry, Indian Institute of Technology, Powai, Bombay, India.
authors.forename: H
authors.initials: H
authors.lastname: Mansuri-Torshizi
authors.forename: T S
authors.initials: TS
authors.lastname: Srivastava
authors.forename: H K
authors.initials: HK
authors.lastname: Parekh
authors.forename: M P
authors.initials: MP
authors.lastname: Chitnis
mesh_terms: D000272:Adipates / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D000599:Amino Acids, Diamino / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D000818:Animals; D000970:Antineoplastic Agents / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D002417:Cattle; D004247:DNA / Q000378:metabolism*; D007941:Leukemia P388 / Q000188:drug therapy; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D009944:Organoplatinum Compounds / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D013057:Spectrum Analysis
chemical_list: D000272:Adipates; D000599:Amino Acids, Diamino; D000970:Antineoplastic Agents; D009942:Organometallic Compounds; D009944:Organoplatinum Compounds; C075472:2,2'-bipyridine-alpha,alpha'-diaminoadipic acid platinum(II); C075474:2,2'-bipyridine-alpha, alpha'-diaminoadipic acid palladium(II); C075471:2,2'-bipyridine-alpha,alpha'-diaminosuberic acid platinum(II); C075473:2,2'-bipyridine-alpha, alpha-diaminosuberic acid palladium(II); D004247:DNA