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    • 1. 发明专利
    • Method for producing pyrazine derivative
    • 生产吡嗪衍生物的方法
    • JP2010013369A
    • 2010-01-21
    • JP2008172641
    • 2008-07-01
    • Astellas Pharma Incアステラス製薬株式会社
    • ORII RYOKIMATSUBARA HIROMASUKIKUCHI TAKASHIHASHIMOTO NORIOGOSHIMA SHUNSUKE
    • C07D403/04A61K31/497A61K31/501A61P9/10A61P25/04A61P25/16A61P25/22A61P25/24A61P25/28A61P43/00C07D401/04
    • PROBLEM TO BE SOLVED: To provide another method for more safely producing an 2-aminopyrazine derivative known as a medicine, especially an adenosine antagonist, in shortened total processes and in a higher total yield than those of known methods for producing the derivative; an intermediate thereof; and a method for producing the intermediate.
      SOLUTION: The inventors have zealously examined another method for producing the 2-aminopyrazine derivative, and has consequently found that a pyrazine ring can safely and efficiently be constructed by reacting a pyridazinone derivative whose adjacent carbon atoms are diketone or its salt with a diaminopropionic acid derivative or its salt, and that the 2-aminopyrazine derivative can efficiently be produced by adopting the pyrazine compound obtained by the reaction or its salt as an intermediate. Thus, the present invention has been completed.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 待解决的问题:提供另一种更为安全地生产称为药物,特别是腺苷拮抗剂的2-氨基吡嗪衍生物的方法,其缩短的总方法和总产率高于已知制备衍生物的方法 ; 其中间体; 和中间体的制造方法。 解决方案:本发明人热切地研究了用于制备2-氨基吡嗪衍生物的另一种方法,因此发现吡嗪环可以安全有效地通过使相邻的碳原子为二酮或其盐的哒嗪酮衍生物与 二氨基丙酸衍生物或其盐,并且2-氨基吡嗪衍生物可以通过采用通过反应获得的吡嗪化合物或其盐作为中间体而有效地制备。 因此,本发明已经完成。 版权所有(C)2010,JPO&INPIT
    • 2. 发明专利
    • MANUFACTURING METHOD OF 4-HALO-1H-PYRROLO[2,3-b]PYRIDINE-5-CARBOXYLIC ACID OR SALT THEREOF
    • 4-HALO-1H-吡咯并[2,3-b]吡啶-5-羧酸或其盐的制备方法
    • JP2010077031A
    • 2010-04-08
    • JP2008244137
    • 2008-09-24
    • Astellas Pharma Incアステラス製薬株式会社
    • KIKUCHI TAKASHIKITAMURA TAKESHI
    • C07D471/04C07F7/10
    • PROBLEM TO BE SOLVED: To provide a manufacturing method of a 4-halo-1H-pyrrolo[2,3-b]pyridine-5-carboxylic acid or a salt thereof that does not require repeated extraction operations at a post-treatment stage, hardly accompanies a side reaction, is excellently operable, increases the total yield and is efficient.
      SOLUTION: In a reaction step, [1] a salt of pyrrolo[2,3-b]pyridine-7-oxide is isolated in a high yield; and [2] the 4-halo-1H-pyrrolo[2,3-b]pyridine-5-carboxylic acid or a salt thereof is obtained by causing a 4-halo-1H-pyrrolo[2,3-b]pyridine to react with carbon dioxide in the presence of a base thereby introducing in a high yield a carboxy group at the 5-position without by-producing a ketone compound.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 待解决的问题:为了提供在后期不需要重复提取操作的4-卤代-1H-吡咯并[2,3-b]吡啶-5-甲酸或其盐的制备方法, 治疗阶段,几乎不伴随副反应,具有优异的可操作性,提高总产量并且效率高。 解决方案:在反应步骤中,以高产率分离出[1]吡咯并[2,3-b]吡啶-7-氧化物的盐; 和[2] 4-卤代-1H-吡咯并[2,3-b]吡啶-5-甲酸或其盐是通过使4-卤代-1H-吡咯并[2,3-b]吡啶 在碱的存在下与二氧化碳反应,从而高产率地引入5-位的羧基而不产生酮化合物。 版权所有(C)2010,JPO&INPIT