Novel Leflunomide analogues were synthesized and evaluated in vivo against thioacetamide
(TAA) induced liver fibrosis in rats. All the animals which were treated with the new analogues
showed improved or comparable survival rates to those treated with Leflunomide. Animals
which were treated with compounds 8d, 8e, 9 and 11 have shown improved liver parameters than Leflunomide
treated animals. Histopathology of the liver has shown that compound 8a is the most active
compound, which decreases fibrosis to a minimal level and compounds 8c, 8e and 11 are active
compounds with fibrosis score 2-3 which is better than that of Leflunomide.
Keywords: Leflunomide, cirrhosis, antifibrotic, isoxazole.
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