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    • 95. 发明授权
    • 2-[[[2-[(hydroxyacetyl)amino]-4-pyridinyl]methyl]thio]-N-[4-(trifluoromethoxy)phenyl]-3-pyridinecarboxamide benzenesulfonate, crystal of same, crystal polymorph thereof, and methods for production thereof
    • 2 - [[[2 - [(羟基乙酰基)氨基] -4-吡啶基]甲基]硫基] -N- [4-(三氟甲氧基)苯基] -3-吡啶甲酰胺苯磺酸盐,其结晶,晶体多晶型物, 生产
    • US09359328B2
    • 2016-06-07
    • US14686577
    • 2015-04-14
    • Santen Pharmaceutical Co., Ltd.
    • Masashi NiwaHiroshi Deguchi
    • C07D213/82C07D401/12A61K31/455
    • C07D213/82A61K31/455C07B2200/13C07C303/32C07C309/29C07D401/12
    • In the course of developing 2-[[[2-[(hydroxyacetyl) amino]-4-pyridinyl]methyl]thio]-N-[4-(trifluoromethoxy) phenyl]-3-pyridinecarboxamide(compound A), there are the multiple problems: 1) compound A or its salt is difficult to be recrystallized, the storage stability largely differs depending on the kind of the salt, and it is very difficult to obtain a salt of compound A having excellent storage stability; 2) in a crystallization process of compound A, it is very difficult to control a crystal polymorph, and 3) compound A (free body) causes mineral deposition in the stomach when it is orally administered repeatedly. For solving these problems, we made examination focusing on the kind of the salt and, as a result, found that 1) benzenesulfonate of compound A does not decompose by light, humidity and other factors in a 1-week preliminary stability test (severe test), and has no problem in its storage stability, 2) a method of selectively producing two kinds of crystal forms of benzenesulfonate of compound A, and that 3) no mineral deposition in the stomach is observed even after a 4-week repeated oral administration.
    • 在开发2 - [[[2 - [(羟基乙酰基)氨基] -4-吡啶基]甲基]硫基] -N- [4-(三氟甲氧基)苯基] -3-吡啶甲酰胺(化合物A)的过程中, 多个问题:1)化合物A或其盐难以重结晶,储存稳定性根据盐的种类而有很大差异,难以获得具有优异储存稳定性的化合物A的盐; 2)在化合物A的结晶过程中,控制晶体多晶型是非常困难的,3)化合物A(游离体)在重复口服给药时会引起胃中的矿物质沉积。 为了解决这些问题,我们考察了盐的种类,结果发现化合物A的1)苯磺酸盐在1周的初步稳定性试验(严重试验)中不会被光,湿度等因素分解 ),并且其储存稳定性没有问题; 2)选择性地生成化合物A的苯磺酸盐的两种晶体形式的方法,以及3)即使在4周的重复口服给药后也没有观察到在胃中的矿物质沉积 。