Online ISSN: 2515-8260

Keywords : Schiff Base

Anti oxidant, Anti Inflammation and Anti Diabetic Activity of Novel Schiff Base Derived from 2-Hydroxy benzoic acid (3-Hydroxy benzylidine)-Hydrazide and 2-Hydroxy benzoic acid (3-Hydroxy -4-methoxy benzylidine)-Hydrazide

V. Anusuya; G. Sujatha; G. B. Broheshnu; G. L. Balaji

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 4, Pages 2523-2532

A series of new 2-Hydroxy benzoic acid (3-Hydroxy benzylidine)-Hydrazide and 2-Hydroxy benzoic acid (3-Hydroxy -4-methoxy benzylidine)-Hydrazide based Schiff base derivatives, have been synthesized. Synthezied Schiff base ligands were screened for anti- oxidant, anti inflammation, and anti diabetic activity. The compounds were screened for their Antioxidant activity was evaluated by DPPH radical scavenging method and compared with standard ascorbic acid. Anti inflammation activity were examined by albumin denatuation and compared with standard aspine. Antidiabetic activity against α-amylase enzyme and compared with standard drug acarbose.

Synthesis of New Reagents as a ligands and Study of (Investigation, Chromatographic Behavior, Solubility)

Dr. Fatimah A. Wannas; Nemah Sahib Mohammed Husien; Dr. Afaq Jaber Kadhium; Dr. Nagham Mahmood Aljamali

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 2, Pages 5266-5279

Formazane ligands are described by many chemical and physical properties that have increased their applications in several fields and therefore have been classified as reagents or ligands with donor or multi-sites. Multiple methods have been used to prepare aldamine and formazane reagents, including imination reactions, condensation, substitution, duplication, including the formation of the carbanion and the reaction of nitrogen in coupling reaction. It is followed by investigation of prepared ligands by various sources that improved all results in this paper via various spectral measurements in inorganic chemistry area like (Uv-Vis, FT.IR, H.NMR) - spectra, besides to other measurements in analytical area like: (solubility, chromatographic behavior, TLC –plate), besides to bio- assay as antibacterial compounds for determination of efficiency of inhibition and other chemical characterizations (melting points, Rf, …).

Synthesis, Characterization And Biological Evaluation Of Schiff Base Of 5-Chloro Salicylaldehyde Hydrazine N-Methyl Carbo- Thioamide And Its Metal Complexes: Cytotoxicity, Dna Interaction & Incision, Antibacterial And Antifungal Studies

Pilli Jyothi; C. Gyana Kumari

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 8, Pages 4339-4355

A Schiff base ligand of N-methyl Thiosemicarbazide and its complexes with Co metal ion
of binary [Co(L)2] (Complex-A), and ternary, formulae [Co(L)(L1)(H2O)] (Complex-B),
[Co(L)(L2)(H2O)] (Complex-C) where L is Schiff base ligand, L1 is Bi-pyridine and L2 is
oxalic acid have been synthesized and the compounds had been characterized based on the
several spectroscopic results. The interaction of these compounds with DNA was
investigated by electronic absorption spectroscopy and fluorescence spectroscopy. Our
experiments indicated that these complexes could strongly bind to CT- DNA via
intercalation mode with Kb values of 1.2 x 104 M-1 to 5.7 x 104 M-1 and the nucleotide
incision against super coiled pBR322 DNA had been investigated by both photolytic and
oxidative techniques to reveal the efficient manner of cleavage by the metal complexes.
Furthermore, these complexes exhibited significant in vitro Cytotoxicity against HeLa &
MCF7 cell lines showing IC50 values around 46.03 to 62.05 μM. Finally, an antimicrobial
assay of these complexes over one gram-positive bacterium of Bacillus Subtilis and one
gram-negative bacterium of Escherichia Coli and also two fungal species had given a good

Green & Efficient Synthesis, Spectroscopic Characterisation of Tridentate Schiff Base and its Metal Complexes


European Journal of Molecular & Clinical Medicine, 2016, Volume 3, Issue 1, Pages 62-73

Schiff base and its metal complexes have been synthesized by both Conventional Thermal Irradiation Technique (CTIT) as well as Micro Wave Thermal Irradiation Technique (MWTIT). later technique was found to be simple, quick, green, synthetic, pollution free and economically viable as compare to traditional one. This new green protocol involves one pot approach. Schiff base is prepared from the condensation of Anthranilic acid and Salicylaldehyde but in microwave assisted condensation in the absence of solvent is found a more efficient process to form a potentially tridentate Schiff base in solid state. This compound is versatile in forming well-defined complexes with transition metal (II) chloride. Schiff base ligand and its metal complexes have been characterized using various physicochemical techniques viz; elemental analysis, molecular weight determination, IR,1HNMR, magnetic susceptibility measurement, molar conductance and ESR analysis. The analytical and spectral data showed that ligand acts as neutral tridentate with ONO donor sequence towards the transition metal(II) ions forming complexes of type [MLXn] where M =Mn(II),Fe(II),Co(II),Ni(II),Cu(II), Zn(II),Cd(II) and Hg(II),L=C14H9NO3,X= H2O and n =2-3.The complexes possessed 1:1 metal-ligand ratio. ESR studies of Mn (II) complex explored the square pyramidal shape whereas other exist in octahedral and tetrahedral crystalline form.