Synthesis, Characterization, and Anti‐inflammatory Activity of Novel Isoxazolyl‐4‐(2‐oxo‐2,3‐dihydro‐1H‐3‐indolyl)pyrrole‐3‐carboxylates

A series of novel isoxazolyl‐4‐(2‐oxo‐2,3‐dihydro‐1H‐3‐indolyl)pyrrole‐3‐carboxylates (17a–i) were synthesized by a three‐component reaction of 4‐amino‐3‐methyl‐5‐styrylisoxazole 14, β‐keto ester 15, and 3‐phenacylideneoxindole 16, in the presence of CAN catalyst in ethanol. The structures of the synthesized compounds have been established on the basis of spectral and analytical data. The title compounds 17a–i were evaluated for their anti‐inflammatory activity. Compounds 17b and 17c exhibited potent anti‐inflammatory activity as that of standard drug.