title: Lasing the DNA fragments through β-diketimine framed Knoevenagel condensed Cu(II) and Zn(II) complexes--an in vitro and in vivo approach.
abstract: The syntheses, structures and spectroscopic properties of Cu(II) and Zn(II) complexes having Knoevenagel condensate β-diketimine Schiff base ligands have been investigated in this paper. Characterization of these complexes was carried out using FTIR, NMR, UV-Vis, elemental analysis, mass and EPR techniques. Absorption titration, electrochemical analyses and viscosity measurements have also been carried out to determine the mode of binding. The shift in ΔEp, E1/2 and Ipc values explores the interaction of CT DNA with the above metal complexes. Interaction of ligands and their complexes with DNA revealed an intercalative mode of binding between them. Antimicrobial studies showed an effective antimicrobial activity of the metal ions after coordination with the ligands. The antioxidant properties of the Schiff base ligands and their complexes were evaluated in a series of in vitro tests by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and H2O2 free radical scavengers. In vivo and in vitro antitumor functions of the complexes against Ehrlich ascites carcinoma tumor model have also been investigated. All the results support that β-diketone derived Knoevenagel condensate Schiff base complexes may act as novel antitumor drugs and suggest that their potent cell life inhibition may contribute to their anti-cancer efficacy.
authors.affiliation: Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India. Electronic address: ramchem1964@gmail.com.
authors.forename: Natarajan
authors.initials: N
authors.lastname: Raman
authors.forename: Narayanaperumal
authors.initials: N
authors.lastname: Pravin
mesh_terms: D000818:Animals; D000890:Anti-Infective Agents / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D000970:Antineoplastic Agents / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D001419:Bacteria / Q000187:drug effects; D001424:Bacterial Infections / Q000188:drug therapy; D002286:Carcinoma, Ehrlich Tumor / Q000188:drug therapy / Q000473:pathology; D045744:Cell Line, Tumor; D056831:Coordination Complexes / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D003300:Copper / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D004247:DNA / Q000737:chemistry / Q000378:metabolism; D005658:Fungi / Q000187:drug effects; D006801:Humans; D007097:Imines / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D051379:Mice; D008958:Models, Molecular; D009181:Mycoses / Q000188:drug therapy; D009369:Neoplasms / Q000188:drug therapy* / Q000473:pathology; D009570:Nitriles / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D012545:Schiff Bases / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D015032:Zinc / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D000890:Anti-Infective Agents; D000970:Antineoplastic Agents; D000975:Antioxidants; D056831:Coordination Complexes; D007097:Imines; D009570:Nitriles; D012545:Schiff Bases; C542835:ketimine; D003300:Copper; D004247:DNA; D015032:Zinc
keywords: Antimicrobial studies; Antioxidant properties; Antitumor activity; Intercalative mode; β-Diketimine