title: Synthesis and antitumor studies on novel Co(II), Ni(II) and Cu(II) metal complexes of bis(3-acetylcoumarin)thiocarbohydrazone.
abstract: The synthesis, structure, physico-chemical investigation and biological studies of some metal complexes of thiocarbohydrazone ligands are described. The ligand is obtained by condensation of N,N'-thiocarbohydrazide with 3-acetylcoumarin. The metal complexes of Co(II), Ni(II) and Cu(II) with bis(3-acetylcoumarin)thiocarbohydrazone were synthesized and isolated as solid products and characterized by analytical means as well as by spectral techniques such as FT-IR, (1)H NMR and EPR and UV spectrometry. The ligand acts as bidentate, through NO or NN, neutral in coordinating the M(II) ions. The bonding sites are the azomethine nitrogen, lactone carbonyl oxygen and respective anion counterparts. The metal complexes exhibit either octahedral or distorted octahedral structures. The complexes are found to be soluble in dimethylformamide and dimethylsulphoxide. Molar conductance values in dimethylsulphoxide indicate the non-electrolytic nature of the complexes. The compounds tested in present study have shown promising cytotoxic activity when screened using the in vitro method and at the same time were shown to have good activity when tested using the Ehrlich Ascites Carcinoma model. Preliminary antimicrobial screening shows the promising results against both bacterial and fungal strains.
authors.affiliation: Department of Studies in Chemistry, Karnatak University, Pavate Nagar, Dharwad 580 003, Karnataka, India.
authors.forename: M P
authors.initials: MP
authors.lastname: Sathisha
authors.forename: Ullas N
authors.initials: UN
authors.lastname: Shetti
authors.forename: V K
authors.initials: VK
authors.lastname: Revankar
authors.forename: K S R
authors.initials: KS
authors.lastname: Pai
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D001835:Body Weight / Q000187:drug effects; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D003035:Cobalt / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D005260:Female; D006835:Hydrazones / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D051379:Mice; D050296:Microbial Viability / Q000187:drug effects; D015394:Molecular Structure; D009368:Neoplasm Transplantation; D009369:Neoplasms / Q000188:drug therapy / Q000473:pathology; D009532:Nickel / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D013057:Spectrum Analysis; D013329:Structure-Activity Relationship
chemical_list: D000900:Anti-Bacterial Agents; D000970:Antineoplastic Agents; D006835:Hydrazones; D009942:Organometallic Compounds; D003035:Cobalt; D003300:Copper; D009532:Nickel