Aims and Scope

Open Chemistry Journal is an open access online journal which publishes review/mini-review articles, letters, short communications and guest edited thematic issues on novel research in the field of chemistry.


  • Physical Chemistry
  • Quantum Chemistry
  • Thermochemistry
  • Bioorganic Chemistry
  • Inorganic Chemistry
  • Electrochemistry
  • Solid-State Chemistry
  • Biochemistry
  • Biophysical Chemistry
  • Bioinorganic Chemistry
  • Environmental Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Medicinal Chemistry
  • Cluster Chemistry
  • Green Chemistry
  • Stereochemistry
  • Neurochemistry Physical
  • Organic Chemistry
  • Materials Chemistry
  • Theoretical Chemistry
  • Immunochemistry
  • Synthetic Chemistry
  • Polymer Chemistry
  • Analytical Chemistry
  • Atmospheric Chemistry
  • Mathematical Chemistry
  • Organometallic Chemistry
  • Immunohistochemistry

Open Chemistry Journal,a rapid peer reviewed journal, is an important and reliable source of current information on developments in the field. The emphasis will be on publishing quality articles rapidly and freely available worldwide.


Recent Articles

Isolation of Phthalates and Terephthalates from Plant Material – Natural Products or Contaminants?

Thies Thiemann

Dialkyl phthalates have been used as plasticizers in polymers for decades. As mobile, small weight molecules, phthalates have entered the environment, where they have become ubiquitous. On the other hand, phthalates continue to be isolated from natural sources, plants, bacteria and fungi as bona fide natural products. Here, doubt remains as to whether the phthalates represent actual natural products or whether they should all be seen as contaminants of anthropogenic origin. The following article will review the material as presented in the literature.


March 02, 2021
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Articles

    Editor's Choice

    Synthesis, Characterization of Mixed Cu(II) Pyridyl Tetrazoles and 1,10-Phenanthroline Complexes - DFT and Biological Activity

    Ch. Himasekar, Sheik Mustafa, Manabolu S. Babu

    Background:

    Mixed ligand copper complexes with 1,10-phenanthroline show good chemical nuclease activity and anticancer activity. Recently, tetrazole derivatives are also promising candidates for anticancer activity. Hence, it is significant to study the DNA binding and anticancer activity of two active N-donor ligands and their copper complexes.

    Objectives:

    The main objective of this study was to investigate the regioisomeric mixed ligand copper complexes response with calf thymus DNA binding and anti-toxic activity against MCF-7 cell line.

    Methods:

    The DNA binding interactions of complexes 1-4 with calf thymus DNA (CT-DNA) were monitored by UV/VIS spectroscopy. The absorption spectra of the Cu complexes are compared with and without CT-DNA at 400-450 nm. The cell proliferation was measured by using the standard 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium- 5-carboxanilide (XTT) assay with four different concentrations of the compounds (5, 10, 50, and 100 mm) and cisplatin (as a positive control) was tested in triplicate for 48 h. The results obtained by the XTTassay are expressed as the average standard deviation of two experiments. The IC50 values of the complexes exhibited differential and dose-dependent inhibitory activities on the growth of MCF-7 cancer cells.

    Results:

    Based on the elemental analysis, molar conductance, magnetic moments, mass, electronic, ESR and IR spectral data, the copper is coordinated by N-atoms of 1,10- phenanthroline and pyridyl tetrazole with octahedral structure. DFT calculations of HOMO and LUMO studies showed that electron density is localized on pyridyl tetrazole ring and phenanthroline ring. The calculated DNA binding constant (Kb) values of 1-4 complexes are in the range 4.2 - 7.6 x104M-1 (Table 4) with similar binding affinity to reported copper tetrazole derivative complexes. The 1-4 complexes with CT DNA interaction are through planar phenanthroline and pyridyl tetrazole ring likely via π-stacking interactions. The IC50 values of complexes show excellent activity with 24(± 0.5); 18(± 0.5); 20(±0.5); (±0.5) and 38 (±0.8) for 1, 2, 3, 4 and cis platin complexes, respectively. After 72 h of the treatment of 1 on MCF-7 cell, IC50 values hinder the cell growth upto 24(± 0.5) µg/ml at 5 µM concentration range (Fig. 5). It is apparent from IC50 values that the order inhibition is 1 > 3 >2 > 4.

    Conclusion:

    Experimental results are highly encouraging to explore the mixed ligand regio isomeric copper complexes which have shown the parallel result with Cisplatin. By proper structural modification of pyridyl tetrazole ligand, substituent better anticancer agents can be prepared.


    January 28, 2019
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