Abstract(E)-N’-Benzylidene-7-methyl-2-propyl-1H-benzo [d]imidazole-5-carbohydrazides (5a-r) have been synthesized from 7-methyl-2-propyl-1H-benzo[d]imidazole-5-carbohydrazide (3) by condensing with different aromatic aldehydes (4a-r). Title compounds (5a-r) were evaluated for in vitro antioxidant activity and based on their potential for antioxidant property, selected compounds 5d and 5m-p were screened for in vivo anti-inflammatory and analgesic activity. The results indicate that the compound 5o and 5p are effective against anti-inflammatory and analgesic activity. The biological data was further supported by molecular docking studies, which revealed the binding pattern and the affinity of the molecules in the active site of COX-2.

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Synthesis of N-(5-methylisoxazol-3-yl)-2-(5-aryl-1,3,4-oxadiazol-2-yl)acetamides 5a–k was achieved from readily available materials. The compounds were screened for their in vitro antimicrobial activity against representative bacterial and fungal strains. Compounds 5b, 5d and 5f exhibit good activity.