[EN] DEXLANSOPRAZOLE PROCESS AND POLYMORPHS<br/>[FR] PROCÉDÉ DE PRÉPARATION DU DEXLANSOPRAZOLE ET AUTRES FORMES POLYMORPHES
申请人:REDDYS LAB LTD DR
公开号:WO2009117489A1
公开(公告)日:2009-09-24
Processes for the preparation of dexlansoprazole, an amorphous form of dexlansoprazole, a solid dispersion of amorphous dexlansoprazole and a pharmaceutically acceptable carrier, and processes for their preparation. Also provided are crystalline compounds 2-[(R)-[(4-chloro-3-methyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole and 2-[(R)-[(4-nitro-3-methyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole, and methods for their preparation.
Synthesis of lansoprazole and rabeprazole using common intermediates is devised. The common intermediates, 2-[(4-nitro-3-methylpyridin-2-yl)methanesulfanyl]-1H-benzoimidazole and 2-[(4-chloro-3-methyl-pyridin-2-yl)methanesulfanyl]-1H-benzoimidazole, were prepared in several ways.
Processes for the preparation of dexlansoprazole, an amorphous form of dexlansoprazole, a solid dispersion of amorphous dexlansoprazole and a pharmaceutically acceptable carrier, and processes for their preparation. Also provided are crystalline compounds 2-[(R)-[(4-chloro-3-methyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole and 2-[(R)-[(4-nitro-3-methyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole, and methods for their preparation.