SYNTHESIS, CHARACTERIZATION AND ANTI INFLAMMATORY ACTIVITY OF NOVEL QUINOXALINE DERIVED CHALCONES
Journal Title: International Journal of Pharmacy and Pharmaceutical Sciences - Year 2015, Vol 7, Issue 1
Abstract
Objective: Quinoxaline derivatives were reported with wide range of biological activities. Hence it was planned to synthesize and screen for their anti inflammatory (in vivo) activity.Methods: Orthophenylene diamine was reacted with oxalic acid to form quinoxaline 2, 3 dione. Quinoxaline-2, 3 (1H, 4H)-dione was chlorinated by using Phosphorousoxytrichloride (POCl3) in dimethyl formamide, to form 2, 3- dichloroquinoxaline. This dichloride compound was reacted with 4 amino acetophenone in DMF, refluxed for 5 hours to form 1-(4-(3-chloroquinoxalin-2-ylamino) phenyl) ethanone. Similarly 1-(4-(3-chloroquinoxalin-2-ylamino) phenyl) ethanone was reacted with corresponding aromatic aldehydes to form quinoxaline derived chalcone by Claisen Schmidt reaction. Characterization all the compounds was performed by IR, 1H NMR and Mass spectroscopic data and screened for anti- inflammatory activity by carrageenan- induced paw edema method.Results: The anti inflammatory data suggested that compounds QCAC 2, 6, 8, 9, 10 and 12 showed significant activity and rest of the compounds exhibited moderate activity compared to the standard compoundConclusion: The compounds bearing nitro, chloro and methoxy groups have shown prominent activity when compared to compounds without these groups.Â
Authors and Affiliations
Karakavalasa Pradeep, Vijay Kotra, R. L Priyadarshini, Veeresh Pratap
Keywords
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