会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 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。
    • 6. 发明申请
    • Substantially Pure and a Stable Crystalline Form of Bosentan
    • 波斯坦的基本纯度和稳定的结晶形式
    • US20110021547A1
    • 2011-01-27
    • US12864571
    • 2009-01-22
    • Girish DixitNandkumar GaikwadHima Prasad NaiduNitin Sharadchandra PradhanJon Valgeirsson
    • Girish DixitNandkumar GaikwadHima Prasad NaiduNitin Sharadchandra PradhanJon Valgeirsson
    • A61K31/513C07D403/04
    • C07D403/04
    • Described is a highly stable crystalline form of bosentan having a water content in the range of about 3-4% by weight, based on the total weight of the bosentan, (bosentan crystalline form A5), a process for preparation thereof, and pharmaceutical compositions comprising the bosentan crystalline form A5. Provided also herein is a bosentan impurity, p-tert-butyl-N[6-hydroxy-5-(2-methoxyphenoxy)-2-(2-pyrimidinyl)-4-pyrimidinyl]benzenesulfonamide (deshydroxyethyl bosentan impurity), and process for preparing and isolating thereof. Further provided are highly pure bosentan or a pharmaceutically acceptable salt thereof substantially free of deshydroxyethyl bosentan and bosentan dimer impurities, process for the preparation thereof, and pharmaceutical compositions comprising solid particles of highly pure bosentan or a pharmaceutically acceptable salt thereof, wherein 90 volume-percent of the particles (D90) have a size of less than about 300 microns.
    • 描述了基于波生坦总重量(波生坦结晶形式A5),其制备方法和药物组合物的水含量在约3-4重量%范围内的波生坦的高度稳定的结晶形式 包括波生坦晶体A5。 本文还提供了一种波生坦杂质,对叔丁基-N [6-羟基-5-(2-甲氧基苯氧基)-2-(2-嘧啶基)-4-嘧啶基]苯磺酰胺(脱羟乙基波生坦杂质),和 制备和分离。 还提供了高纯度的波生坦或其药学上可接受的盐,其基本上不含脱羟基乙基波生坦和波生坦二聚体杂质,其制备方法以及包含高纯度波生坦固体颗粒或其药学上可接受的盐的药物组合物,其中90体积% 的颗粒(D90)具有小于约300微米的尺寸。