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    • 3. 发明申请
    • Processes for producing pyrazoloacridone derivative and synthetic intermediate thereof
    • 吡唑并吖啶酮衍生物及其合成中间体的制备方法
    • US20060217554A1
    • 2006-09-28
    • US10551816
    • 2004-04-23
    • Nobuaki TsubakiharaTakeshi KatsuhiraMasahiko KinugawaNobuyuki Kato
    • Nobuaki TsubakiharaTakeshi KatsuhiraMasahiko KinugawaNobuyuki Kato
    • C07D471/04
    • C07D471/06C07D231/56
    • (wherein R represents lower alkyl; R1 represents a hydrogen atom, —CH2X or —OC(═O)R3; and R2 represents a hydrogen atom, nitro, halogen, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkoxy, substituted or unsubstituted lower alkylthio or substituted or unsubstituted aryl) The present invention provides a simple industrial process for producing pyrazoloacridone derivatives having an antitumor activity, 1-(2-carboxyphenyl)indazole derivatives, which are useful as synthetic intermediates thereof, or the like; and the like. For example, the present invention provides a process for producing a 1-(2-carboxyphenyl)indazole derivative represented by general formula (IV) which comprises steps of reacting a compound represented by above general formula (I) with a compound represented by above general formula (II) in the presence of a base to produce a compound represented by above general formula (III); and hydrolyzing a cyano group of the resulting compound represented by general formula (III).
    • (其中R表示低级烷基; R 1表示氢原子,-CH 2 X或-OC(-O)R 3);和 R 2表示氢原子,硝基,卤素,取代或未取代的低级烷基,取代或未取代的低级烷氧基,取代或未取代的低级烷硫基或取代或未取代的芳基)本发明提供了简单的工业方法 制备具有抗肿瘤活性的吡唑并吖啶酮衍生物,可用作其合成中间体的1-(2-羧基苯基)吲唑衍生物等; 等等。 例如,本发明提供一种制备由通式(IV)表示的1-(2-羧基苯基)吲唑衍生物的方法,该方法包括以下步骤:使由上述通式(I)表示的化合物与上述通式 式(II)的化合物在碱存在下反应制备由上述通式(III)表示的化合物; 并水解由通式(III)表示的所得化合物的氰基。