ANTIMICROBIAL POTENT OXAZINE-2-AMINE DERIVATIVES
Journal Title: Mintage journal of pharmaceutical and medical sciences - Year 2016, Vol 5, Issue 5
Abstract
Objective: To synthesize thirteen effective microbial potent oxazine-2-amine derivatives and evaluate the antimicrobial activities of these compounds. Material and methods: The solvent-free solid fly-ash: H2SO4 catalyzed cyclization of 4-bromo-1-naphthyl chalcones and urea under microwave irradiation technique was utilized for the synthesis of oxazine derivatives. The synthesized oxazines were characterized by their physical constants and spectroscopic data. The Bauer-Kirby disc-diffusion method of measurement of zone of inhibition was used for evaluation antimicrobial activity of synthesized oxazines. Results: The cyclization was effective and this reaction gave more than 80% yield. The catalyst was reused up to five times consecutively without appreciable decreasing of yield. All compounds were active against their microbial strains. Conclusions: This solvent-free synthetic method was effective for the synthesis of oxazine derivatives. The amino, dimethylamino, halogens, methoxy and methyl substituted oxazines shows significant antibacterial activity. Chloro, hydroxy and nitro substituted oxazine derivative have shown significant antifungal activity.
Authors and Affiliations
Ganesamoorthy Thirunarayanan
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