申请人:Jiangsu Hengrui Medicine Co., Ltd.
公开号:US20180244628A1
公开(公告)日:2018-08-30
A crystalline form of an androgen receptor inhibitor and its preparation method are provided. In particular, provided are crystal form I of (S)-4-(3-(4-(2,3-dihydroxypropoxy)phenyl)-4,4-dimethyl-5-carbonyl-2-thioimidazolin-2-yl)-2-(trifluoromethyl)benzonitrile (a compound of formula (I)) and its preparation method. The method includes (a) adding any crystal form or amorphous form of the compound of formula (I) to an organic solvent to obtain a solution and heating the solution until it is clear, followed by cooling the solution to precipitate a crystal; and (b) filtering, washing, and drying the crystal. The obtained crystal form I of the compound of formula (I) has good chemical stability and crystal form stability, and the crystallization solvent used has low toxicity and residue, and is thus better for use in clinical treatment.
提供了一种雄激素受体抑制剂的晶体形式及其制备方法。具体提供了化合物(S)-4-(3-(4-(2,3-二羟基丙氧基)苯基)-4,4-二甲基-5-羰基-2-硫代咪唑啉-2-基)-2-(三氟甲基)苯腈(式(I)的化合物)的晶体形式I及其制备方法。该方法包括(a)将式(I)的任何晶体形式或非晶形式加入有机溶剂中以获得溶液,并加热溶液直至清澈,然后冷却溶液以沉淀晶体;(b)过滤、洗涤和干燥晶体。所得到的式(I)的晶体形式I具有良好的化学稳定性和晶体形态稳定性,所使用的结晶溶剂具有低毒性和残留物,因此更适合于临床治疗。