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
    • 2. 发明申请
    • NEW CRYSTALLINE FORMS OF CLOPIDOGREL HYDROBROMIDE AND METHODS OF THEIR PREPARATION
    • 氯碳酸氢盐的新型结晶形式及其制备方法
    • WO2005068471A1
    • 2005-07-28
    • PCT/CZ2004/000089
    • 2004-12-21
    • ZENTIVA, A.S.HAJICEK, JosefPIHERA, PavelSTEPANKOVA, Hana
    • HAJICEK, JosefPIHERA, PavelSTEPANKOVA, Hana
    • C07D495/04
    • C07D495/04
    • The invention concerns clopidogrel hydrobromide in the crystalline Form I characterized by an X-ray diffraction pattern with characteristic interplanar distances d of 4.01; 4.39 and 3.17 ú and which is further characterized by bands in the infrared spectra at 1743; 1421; 1237, 760 and 728 cm -1 . Clopidogrel hydrobromide in the crystalline Form II is characterized by an X­ray diffraction pattern with characteristic interplanar distances d of 4.52; 3.83; 3.48 ú, as well as bands in the infrared spectra at 1754; 1436; 1317 and 1223 cm -1 . Crystalline form III is characterized by the following peaks ascertained by X-ray diffraction at 20 positions: 7.796 °; 15.380 °; 18.389 °; 19.369 ° and 23.895 °. The method of preparation of clopidogrel hydrobromide in the crystalline Form I consist in precipitating the clopidogrel base dissolved in toluene with a concentrated solution of hydrobromic acid. The method of preparation of clopidogrel hydrobromide in the crystalline Form II consist in dissolving the clopidogrel base in an organic solvent and precipitating it with a solution of hydrobromic acid in toluene or with gaseous hydrogen bromide. Form III can be used for the preparation of pharmaceutically applicable Form II.
    • 本发明涉及结晶形式I中的氯吡格雷氢溴酸盐,其特征在于具有4.01的特征性面间距离d的X射线衍射图谱; 4.39和3.17ú,其进一步特征在于1743年红外光谱中的谱带; 1421; 结晶形式II中的氯吡格雷氢溴酸盐的特征在于具有4.52的特征性面间距d的X射线衍射图; 3.83; 3.48ú,以及1754年的红外光谱带; 1436; 1317和1223厘米-1。 结晶形式III的特征在于在20个位置通过X射线衍射确定的以下峰:7.796°; 15.380°; 18.389°; 19.369°和23.895°。 结晶形式I中氯吡格雷氢溴酸盐的制备方法是用氢溴酸浓溶液沉淀溶解在甲苯中的氯吡格雷碱。 在晶型II中制备氯吡格雷氢溴酸盐的方法包括将氯吡格雷碱溶解在有机溶剂中,并用氢溴酸在甲苯或与溴化氢气体的溶液中沉淀。 III型可用于制备药学上适用的II型。