Inorganica Chimica Acta
Inorganica Chimica Acta
5 years ago

Design, synthesis, antimicrobial and antioxidant activity of 3-formyl chromone hydrazone and their metal (II) complexes

Design, synthesis, antimicrobial and antioxidant activity of 3-formyl chromone hydrazone and their metal (II) complexes
In search of a new antimicrobial and antioxidant with improved potency, we designed and synthesized a pair of chromone hydrazones and their transition metal complexes. The characterization and elucidation of the structure of the prepared compounds were performed by elemental analysis, IR, electronic, EPR and thermo gravimetric analyzes, as well as conductivity and magnetic susceptibility measurements. The EPR spin Hamiltonian parameters of copper complexes were calculated. The spectroscopic data showed that the ligands act as a monobasic tridentate. The coordination sites with the metal (II) ion are pyrone oxygen, azomethine nitrogen and hydrazonic oxygen. Hydrazones and their metal complexes have shown antimicrobial activity against Gram-positive bacteria (S. aureus and B. subtilis); Gram-negative bacteria (P. aeruginosa and E. coli) and fungus (C. albicans) and also the synthesized ligands were tested for their antioxidant activity in vitro by DPPH scanning and the ABTS radical method. The substitution requirements for favorable antioxidant activity were investigated. Compounds containing a phenolic hydroxyl group at the imine (azomethine) position as well as an additional electron donor group exhibited lower IC50 values and the result shows that all hydrazones have a significant antioxidant activity compared to the standard antioxidants Trolox.

Publisher URL: www.sciencedirect.com/science

DOI: S0020169317306497

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.