Antibacterial Effects and Synthesized New Derivatives of 4-hydroxy-chromen-2-one

In present paper, we report the organic syntheses of three compounds exactly 4-hydroxy-chromen-2-one and describe the results of antibacterial activity of purified compounds. Compounds 4-(4-Methoxy-phenylamino)-2-oxo-2H-chromene-3-sulfonyl chloride (a). N-{3-[Diethoxy-(2-hydroxy-phenyl)-methyl]-2-oxo-2H-chromen-4-yl}-acetamide (b), 4-(6-Nitro-benzothiazol-2-ylamino)-2-oxo-2H-chromene-3-carbaldehyde (c), have been synthesized and characterized using melting points, IR spectra, 1H-NMR and 13C-NMR spectra. Our research goal is synthesis novel organic compounds which prove high level of antibacterial activity. The antibacterial activity of synthesized compounds and streptomycin and cefalexine at concentrations of 2mg/ml, 3mg/ml and 5mg/ml, have been evaluated against three strains of bacterial culture; Staphylococcus aureus, E. coli and Bacillus cereus. The compounds show bacteriostatic and bactericidal activity in high level and also synthetized compounds has been characterized using advanced instrumental methods of analysis.