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    • 2. 发明申请
    • PALIPERIDONE OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF SUBSTANTIALLY FREE OF IMPURITIES
    • PALIPERIDONE或其药物接受的盐,无特殊物质
    • US20120164188A1
    • 2012-06-28
    • US13381716
    • 2010-09-10
    • Girish DixitAnil Shahaji KhileJayesh Laljibhai PatelNitin Sharadchandra Pradhan
    • Girish DixitAnil Shahaji KhileJayesh Laljibhai PatelNitin Sharadchandra Pradhan
    • A61K31/519A61K9/14A61P25/18C07D471/04
    • C07D471/04
    • Provided herein are impurities of paliperidone, 3-[2-[4-[1-(4-fluoro-2-hydroxyphenyl)methanoyl]piperidinyl-1-yl]ethyl]-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one (methanoyl impurity), 3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (dehydroxy impurity) and 3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-2-methyl-7,8-dihydro-6H-pyrido[1,2-a]pyrimidin-4,9-dione (9-keto impurity), and processes for preparing and isolating thereof. Provided further herein is a highly pure paliperidone or a pharmaceutically acceptable salt thereof substantially free of methanoyl, dehydroxy and 9-keto impurities, process for the preparation thereof, and pharmaceutical compositions comprising highly pure paliperidone or a pharmaceutically acceptable salt thereof substantially free of methanoyl, dehydroxy and 9-keto impurities. Provided also herein are improved and efficient processes for preparing paliperidone intermediates.
    • 本文提供的是普利培酮,3- [2- [4- [1-(4-氟-2-羟基苯基)甲酰基]哌啶-1-基]乙基] -2-甲基-6,7,8,9- 四氢-4H-吡啶并[1,2-a]嘧啶-4-酮(甲酰基杂质),3- [2- [4-(6-氟-1,2-苯并异恶唑-3-基)-1-哌啶基] 乙基] -2-甲基-4H-吡啶并[1,2-a]嘧啶-4-酮(脱羟基杂质)和3- [2- [4-(6-氟-1,2-苯并异恶唑-3-基) -1-哌啶基]乙基] -2-甲基-7,8-二氢-6H-吡啶并[1,2-a]嘧啶-4,9-二酮(9-酮杂质),以及其制备和分离方法。 本文进一步提供了基本上不含甲酰基,脱羟基和9-酮杂质的高度纯的普利培酮或其药学上可接受的盐,其制备方法和包含高度纯的普利培酮或其药学上可接受的盐基本上不含甲酰基的药物组合物, 脱羟基和9-酮杂质。 本文还提供了用于制备利培酮中间体的改进和有效的方法。