METHOD FOR PREPARING (S)-4-HYDROXY-2-OXO-1-PYRROLIDINE ACETAMIDE
    1.
    发明申请
    METHOD FOR PREPARING (S)-4-HYDROXY-2-OXO-1-PYRROLIDINE ACETAMIDE 审中-公开
    制备(S)-4-羟基-2-氧代-1-吡咯烷酮乙酰胺的方法

    公开(公告)号:US20130060049A1

    公开(公告)日:2013-03-07

    申请号:US13581832

    申请日:2010-09-09

    IPC分类号: C07D207/12

    CPC分类号: C07D207/273

    摘要: A preparation method of (S)-4-hydroxy-2-oxo-1-pyrrolidine acetamide is provided, which includes the steps of preparing the crude product and crystallizing, wherein acetone and water are used as solvents in the step of crystallizing. The (S)-oxiracetam prepared by the method of the present invention has high purity of more than 99.3% and low impurity of 0-0.5%, based on the percentages of the mass. According to the method of the present invention, with regard to the way of charging materials, adding inorganic base only just a few times is easier to handle and more convenient to the industrial manufacturing and application.

    摘要翻译: 提供(S)-4-羟基-2-氧代-1-吡咯烷乙酰胺的制备方法,其包括制备粗产物并结晶的步骤,其中在结晶步骤中使用丙酮和水作为溶剂。 通过本发明方法制备的(S) - 氧乙酰胺基于质量百分比具有大于99.3%的高纯度和0-0.5%的低杂质。 根据本发明的方法,对于充电材料的方式,只加几次无机碱容易处理,更方便工业制造和应用。

    Crystal form I of (S)-4-hydroxy-2-oxo-1-pyrrolidine acetamide, preparing method and use thereof
    2.
    发明授权
    Crystal form I of (S)-4-hydroxy-2-oxo-1-pyrrolidine acetamide, preparing method and use thereof 有权
    (S)-4-羟基-2-氧代-1-吡咯烷乙酰胺的晶型I的制备方法和用途

    公开(公告)号:US09238622B2

    公开(公告)日:2016-01-19

    申请号:US13581821

    申请日:2010-09-08

    IPC分类号: C07D207/273

    CPC分类号: C07D207/273

    摘要: A crystal form I of (S)-4-hydroxy-2-oxo-1-pyrrolidine acetamide, or named (S)-oxiracetam, is provided, which is characterized by a powder x-ray diffraction pattern that exhibits data of d-values versus the relative intensities as: 7.075(M), 5.355(S), 5.092(S), 4.590(M), 4.325(M), 4.259(S), 4.041(VS), 3.808(M), 3.542(M), 3.445(M), 3.393(M), 2.972(M), 2.914(S). A method for preparing a crystal form I of (S)-oxiracetam is also provided, which includes preparing the crude product and crystallizing A use of the crystal form I of (S)-oxiracetam in the manufacture of a medicament for preventing and treating memory dysfunction is also provided. Accordingly, the crystal form I of (S)-oxiracetam prepared by the method has high purity of more than 99.3% based on the percentages of the mass, with better efficacy than (S)-oxiracetam for preventing or treating memory dysfunction. Concerning the way of charging materials, adding inorganic base only a few times is simpler and more beneficial to industrial manufacturing and application.

    摘要翻译: 提供(S)-4-羟基-2-氧代-1-吡咯烷乙酰胺的结晶形式I,或称为(S) - 氧西拉坦,其特征在于粉末x射线衍射图,其显示d- 值相对于7.075(M),5.355(S),5.092(S),4.590(M),4.325(M),4.259(S),4.041(VS),3.808(M) ),3.445(M),3.393(M),2.972(M),2.914(S)。 还提供了制备(S) - 氧西拉坦的晶形I的方法,其包括制备粗产物并结晶A(S) - 氧西拉坦的晶型I的用途在制备用于预防和治疗记忆的药物中 还提供功能障碍。 因此,通过该方法制备的(S) - 氧乙酰胺的晶型I基于质量百分比具有高于99.3%的高纯度,与用于预防或治疗记忆功能障碍的(S) - 奥昔西坦相比,具有更好的功效。 关于充电材料的方法,仅添加无机碱几次更简单,更有利于工业制造和应用。

    CRYSTAL FORM I OF (S)-4-HYDROXY-2-OXO-1-PYRROLIDINE ACETAMIDE, PREPARING METHOD AND USE THEREOF
    3.
    发明申请
    CRYSTAL FORM I OF (S)-4-HYDROXY-2-OXO-1-PYRROLIDINE ACETAMIDE, PREPARING METHOD AND USE THEREOF 有权
    (S)-4-羟基-2-氧代-1-吡咯烷基乙酰胺的晶体形式,其制备方法和用途

    公开(公告)号:US20130059900A1

    公开(公告)日:2013-03-07

    申请号:US13581821

    申请日:2010-09-08

    CPC分类号: C07D207/273

    摘要: A crystal form I of (S)-4-hydroxy-2-oxo-1-pyrrolidine acetamide, or named (S)-oxiracetam, is provided, which is characterized by a powder x-ray diffraction pattern that exhibits data of d-values versus the relative intensities as: 7.075(M), 5.355(S), 5.092(S), 4.590(M), 4.325(M), 4.259(S), 4.041(VS), 3.808(M), 3.542(M), 3.445(M), 3.393(M), 2.972(M), 2.914(S). A method for preparing a crystal form I of (S)-oxiracetam is also provided, which includes preparing the crude product and crystallizing A use of the crystal form I of (S)-oxiracetam in the manufacture of a medicament for preventing and treating memory dysfunction is also provided. Accordingly, the crystal form I of (S)-oxiracetam prepared by the method has high purity of more than 99.3% based on the percentages of the mass, with better efficacy than (S)-oxiracetam for preventing or treating memory dysfunction. Concerning the way of charging materials, adding inorganic base only a few times is simpler and more beneficial to industrial manufacturing and application.

    摘要翻译: 提供(S)-4-羟基-2-氧代-1-吡咯烷乙酰胺的结晶形式I,或称为(S) - 氧西拉坦,其特征在于粉末x射线衍射图,其显示d- 值相对于7.075(M),5.355(S),5.092(S),4.590(M),4.325(M),4.259(S),4.041(VS),3.808(M) ),3.445(M),3.393(M),2.972(M),2.914(S)。 还提供了制备(S) - 氧西拉坦的晶形I的方法,其包括制备粗产物并结晶A(S) - 氧西拉坦的晶型I的用途在制备用于预防和治疗记忆的药物中 还提供功能障碍。 因此,通过该方法制备的(S) - 氧乙酰胺的晶型I基于质量百分比具有高于99.3%的高纯度,与用于预防或治疗记忆功能障碍的(S) - 奥昔西坦相比,具有更好的功效。 关于充电材料的方法,仅添加无机碱几次更简单,更有利于工业制造和应用。