Abstract A series of novel N-(4-aryl-1, 3-thiazol-2-yl)-2-(2, 4-dioxo-1, 3-thiazolidin-5-yl) acetamides (4a–k) and N-(1, 3-benzothiazol-2-yl)-2-(2, 4-dioxo-1, 3-thiazolidin-5-yl) acetamide derivatives (4l–o) are synthesized and evaluated for their anti-inflammatory and antioxidant activity (DPPH radical scavenging, superoxide anion scavenging, lipid peroxide inhibition, erythrocyte hemolytic inhibition). Compounds 4k and 4l have exhibited good ...