Synthesis , characterization and antimicrobial screening of some novel coumarin-pyrazolo Schiff bases

Some novel coumarin-pyrazolo substituted Schiff bases were synthesized by two different methods; conventional and microwave irradiation from coumarin-pyrazole aldehyde and different substituted aryl amines. The structure conformation of these synthesized compounds was done by FT-IR, 1 H NMR, 13 C NMR and mass spectral data. All these synthesized compounds were also tested for in-vitro antimicrobial activity against some bacterial as well as fungal strains in DMF and DMSO. It is observed that some of Schiff bases showed excellent antibacterial activity in both solvents.

[1]  A. Shafiee,et al.  Synthesis and cytotoxicity of novel chromenone derivatives bearing 4-nitrophenoxy phenyl acryloyl moiety , 2016, Journal of the Iranian Chemical Society.

[2]  S. M. Alencar,et al.  A pharmacological perspective on the use of Brazilian Red Propolis and its isolated compounds against human diseases. , 2016, European journal of medicinal chemistry.

[3]  C. Supuran,et al.  Thioxocoumarins Show an Alternative Carbonic Anhydrase Inhibition Mechanism Compared to Coumarins. , 2016, Journal of medicinal chemistry.

[4]  K. Brodowska,et al.  Schiff Bases — Interesting Range of Applications in Various Fields of Science , 2015 .

[5]  Y. Bansal,et al.  Novel coumarin–benzimidazole derivatives as antioxidants and safer anti-inflammatory agents , 2014, Acta pharmaceutica Sinica. B.

[6]  T. Khoo,et al.  Synthesis, characterization and biological activity of two Schiff base ligands and their nickel(II), copper(II), zinc(II) and cadmium(II) complexes derived from S -4-picolyldithiocarbazate and X-ray crystal structure of cadmium(II) complex derived from pyridine-2-carboxaldehyde , 2014 .

[7]  N. Siddiqui,et al.  Antimicrobial activity of Schiff bases of coumarin-incorporated 1,3,4-oxadiazole derivatives: an in vitro evaluation , 2013, Medicinal Chemistry Research.

[8]  Jinying Yuan,et al.  Schiff's base as a stimuli-responsive linker in polymer chemistry , 2012 .

[9]  Punit Kumar,et al.  Synthesis and biological evaluation of Schiff bases and azetidinones of 1-naphthol , 2012, Journal of pharmacy & bioallied sciences.

[10]  A. Mohamad,et al.  Antifungal Activities of New Coumarins , 2012, Molecules.

[11]  H. Osman,et al.  Microwave-assisted synthesis and antioxidant properties of hydrazinyl thiazolyl coumarin derivatives , 2012, Chemistry Central Journal.

[12]  Manoj Kumar,et al.  Influence of chirality of V(V) Schiff base complexes on DNA, BSA binding and cleavage activity. , 2011, European journal of medicinal chemistry.

[13]  R. Palić,et al.  Synthesis and Antimicrobial Activity of New 4-Heteroarylamino Coumarin Derivatives Containing Nitrogen and Sulfur as Heteroatoms , 2010, Molecules.

[14]  A. Malde,et al.  Synthesis, anti-tubercular activity and 3D-QSAR study of coumarin-4-acetic acid benzylidene hydrazides. , 2008, European journal of medicinal chemistry.

[15]  M. Ghate,et al.  Synthesis and in vivo analgesic and anti-inflammatory activity of some bi heterocyclic coumarin derivatives. , 2005, European journal of medicinal chemistry.

[16]  E. Fadl-Allah,et al.  Synthesis of some coumarin derivatives and their antimicrobial activity , 1989 .

[17]  D. Buckle,et al.  N-benzylpiperazino derivatives of 3-nitro-4-hydroxycoumarin with H1 antihistamine and mast cell stabilizing properties. , 1984, Journal of medicinal chemistry.

[18]  M. Molnar,et al.  Natural and synthetic coumarins as potential anticancer agents , 2015 .

[19]  B. Sarma,et al.  Synthesis and Chemical Nuclease Activities of Copper (II) and Ni (II) Complexes of 4-Chloro-2-(pyridine-3-Yliminomethyl) Phenol Schiff Bases , 2015 .

[20]  R. Patil,et al.  Synthesis, characterization, molecular docking and evaluation of antimicrobial and antiproliferative properties of 3-substituted chromen-2-one derivatives , 2015 .

[21]  S. K. Al-Mosawi Synthesis and Characterization of Heterocyclic Schiff Base, Thaizolidinone and Chalcone as Antibacterial Agents. , 2014 .

[22]  A. Xavier,et al.  Synthesis and Study of Schiff base Ligands , 2014 .

[23]  P. Yeole,et al.  Synthesis and biological evaluation of schiff base and 4-thiazolidinones of amino salicylic acid and their derivatives as an antimicrobial agent. , 2009 .

[24]  M. Ibrahim,et al.  Synthesis, Characterization and Use of Schiff Bases as Fluorimetric Analytical Reagents , 2007 .

[25]  Arnold Weissberger,et al.  Organic solvents;: Physical properties and methods of purification , 1970 .