Abstract
Introduction: 4(3H)-quinazolinone rings have been reported to possess different biological activities such as antibacterial, antifungal, antitubercular, antiviral, anticancer. These activities also include antihypertensive, diuretic, antimicrobial, pesticidal, anticonvulsant, anaesthetic and sedative activities, anti-malarial, and anti-diabetic. Methods/Experimental: The compound, 3-(3-methoxyphenyl)-2-thioxo-2,3-dihydro1H-quinazolin-4-one (3) was synthesized by dissolving Methyl anthranilate and N-(3- methoxyphenyl)-methyl dithiocarbamic acid in ethanol and anhydrous potassium carbonate and refluxed for 23 h and re-precipitated by treating with dilute hydrochloric. When tested for their in vitro analgesic activity using acetic acid induced induced writhing in mice, the compounds had Analgesic activity. Result: The compounds exhibited significant analgesic activity in the range of 74.67 - 83.80% in comparison to control. Conclusions: From our findings, the compounds synthesized have higher analgesic activities as compared to the standard analgesic drug.
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