The present invention relates to a novel compound of Formula IV and use of said compound for the preparation of 2-[2-methyl-1-[[4-methylsulfonyl-2-(trifluoromethyl)phenyl] methyl]pyrrolo[2,3-b]pyridine-3-yl]acetic acid [fevipiprant], Formula IV wherein A is SO2Me, halogen or a leaving group. The present invention further relates to a process of preparation of pharmaceutical acceptable salts of fevipiprant and composition thereof.
本发明涉及一种新的化合物IV的配方和使用该化合物制备2-[2-甲基-1-[[4-甲基磺酰基-2-(三
氟甲基)苯基]甲基]
吡咯[2,3-b]
吡啶-3-基]
乙酸[费维匹普兰特],式IV中A为SO2Me,卤素或离去基团。本发明还涉及制备费维匹普兰特的药物可接受盐和其组合物的制备过程。