Synthesis and characterization of some thiazolidine 4-one derivatives derived from Schiff bases, and evaluation of their antibacterial and antifungal activity.

Abstract

Schiff bases compounds were synthesized by reaction of the Benzidine with different aldehydes and ketones by using microwave method to obtain compounds (N1-N5). Thiazolidine 4-one compounds were prepared by the cyclization of Schiff bases with thioglycolic acid to obtain thiazolidine 4-one compounds (N6-N10). The prepared compounds were characterized by physical methods, through melting points and color, as well as by spectroscopic methods such as FT-IR and 1H-NMR. The purity of the prepared compounds was evaluated using TLC. The bioactivity of these compounds was tested on the growth of one type of a fungus of the yeast variety Candida was studied and type of bacterial isolates of Bacillus pumilus and the standard fungicide (Nystatin) of the fungus was used and the standard antibiotic (neomycin sulfate) of bacteria and the results indicate that the synthesized compounds have the ability to inhibit the fungus and bacteria used by using different concentrations. Molecular docking studies were conducted to examine how some of the synthesized compounds bind to the putative target, Protein structures i.e. HER2 (PDB ID: 1N8Z), Carcinoembryonic antigen (PDB ID; 2VER), BRCA1 (PDB ID 4OFB), BRCA2 (PDB ID 1MJE).