申请人:Japan Tobacco Inc.
公开号:EP3281939A1
公开(公告)日:2018-02-14
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.
一种生产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-1,4-二氢喹啉-3-羧酸晶体(晶型III)的方法,该晶体具有X射线粉末衍射图样,衍射角2θ处的特征衍射峰为8.54°、14.02°、15.68°、17.06°、17.24°、24.16°、25.74°,其中该方法包括:
溶解 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-1,4-二氢喹啉-3-羧酸的晶体(晶型 II),该晶体的 X 射线粉末衍射图样在衍射角 2θ 为 6.在 X 射线粉末衍射仪上测量,其特征衍射峰的衍射角 2θ 为 6.56°、13.20°、19.86°、20.84°、21.22°、25.22°、
在溶剂中;以及
在溶剂中加入 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-1,4-二氢喹啉-3-羧酸的籽晶(晶型 III),该籽晶的 X 射线粉末衍射图样在衍射角 2θ 为 8.用 X 射线粉末衍射仪测量,该衍射峰的衍射角为 2θ,即 8.54°、14.02°、15.68°、17.06°、17.24°、24.16°、25.74°。