METHOD OF PRODUCING STABLE CRYSTAL OF 4-OXOQUINOLINE COMPOUND
    3.
    发明公开
    METHOD OF PRODUCING STABLE CRYSTAL OF 4-OXOQUINOLINE COMPOUND 审中-公开
    生产4-氧代喹啉化合物稳定晶体的方法

    公开(公告)号:EP3281939A1

    公开(公告)日:2018-02-14

    申请号:EP17186674.2

    申请日:2005-05-19

    IPC分类号: C07D215/56

    CPC分类号: C07D215/56

    摘要: A method of producing a crystal (crystal form III) of 6-(3-chloro-2-fluorobenzyl)-1-[(S)-1-hydroxymethyl-2-methylpropyl]-7-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid, which has an X-ray powder diffraction pattern having characteristic diffraction peaks at diffraction angels 2θ of 8.54°, 14.02°, 15.68°, 17.06°, 17.24°, 24.16°, 25.74° as measured by X-ray powder diffractometer, wherein the method comprises:
    dissolving a crystal (crystal form II) of 6-(3-chloro-2-fluorobenzyl)-1-[(S)-1-hydroxymethyl-2-methylpropyl]-7-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid, which has an X-ray powder diffraction pattern having characteristic diffraction peaks at diffraction angles 2θ of 6.56°, 13.20°, 19.86°, 20.84°, 21.22°, 25.22° as measured by X-ray powder diffractometer,
    in a solvent; and
    adding a seed crystal (crystal form III) of 6-(3-chloro-2-fluorobenzyl)-1-[(S)-1-hydroxymethyl-2-methylpropyl]-7-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid, which has an X-ray powder diffraction pattern having characteristic diffraction peaks at diffraction angles of 2θ of 8.54°, 14.02°, 15.68°, 17.06°, 17.24°, 24.16°, 25.74° as measured by X-ray powder diffractometer, to the solution.

    摘要翻译: 制备6-(3-氯-2-氟苄基)-1 - [(S)-1-羟甲基-2-甲基丙基] -7-甲氧基-4-氧代-1,4-二氢化茚的晶体(晶型III) 4-二氢喹啉-3-羧酸,其具有在衍射角2θ为8.54°,14.02°,15.68°,17.06°,17.24°,24.16°,25.74°处具有特征衍射峰的X射线粉末衍射图, X射线粉末衍射仪,其中该方法包括:将6-(3-氯-2-氟苄基)-1 - [(S)-1-羟基甲基-2-甲基丙基] -7-甲氧基苯甲酸的晶体(晶形II) 得到具有在衍射角2θ为6.56°,13.20°,19.86°,20.84°,21.22°,19.28°,19.58°, 通过X射线粉末衍射仪测量的25.22°,在溶剂中; 并加入6-(3-氯-2-氟苄基)-1 - [(S)-1-羟基甲基-2-甲基丙基] -7-甲氧基-4-氧代-1,4(2H) - 酮的晶种(晶型III) - 二氢喹啉-3-羧酸,其具有在衍射角2θ为8.54°,14.02°,15.68°,17.06°,17.24°,24.16°,25.74°处具有特征衍射峰的X射线粉末衍射图, X射线粉末衍射仪,到解决方案。