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    • 5. 发明申请
    • METHOD FOR PURIFYING AMINOACETYLPYRROLIDINECARBONITRILE DERIVATIVE AND SALT THEREOF
    • 净化氨基乙酰胆碱衍生物及其盐的方法
    • US20110172444A1
    • 2011-07-14
    • US13119274
    • 2009-09-15
    • Futoshi Shiga
    • Futoshi Shiga
    • C07D207/09C07D207/10
    • C07D207/16C07B63/02
    • The present invention herein provides a simple, efficient and industrially useful method for purifying an aminoacetylpyrrolidinecarbonitrile derivative which is useful as a DPP-IV inhibitor. The method comprises the steps of acting an acid such as maleic acid on an aminoacetylpyrrolidinecarbonitrile derivative represented by the following Formula 1 to form a salt, isolating the salt and then regenerating the foregoing derivative from the salt: (In the formula, A represents CH2, CHF or CF2; R represents a C1 to C6 alkyl group which may have a substitutent, a C3 to C8 cycloalkyl group which may have a substitutent, an arylmethyl group which may have a substitutent, an arylethyl group which may have a substitutent, an aromatic hydrocarbon ring which may have a substitutent, an aromatic hetero ring which may have a substitutent, or an aliphatic hetero ring which may have a substitutent; and n represents 1 or 2).
    • 本发明提供了用作纯化用作DPP-IV抑制剂的氨基乙酰基吡咯烷腈衍生物的简单,有效和工业上有用的方法。 该方法包括以下步骤:将下述式1表示的氨基乙酰基吡咯烷腈衍生物作用于马来酸等酸,形成盐,分离盐,然后从盐中再生上述衍生物:(式中,A表示CH 2, CHF或CF 2; R表示可以具有取代基的C1〜C6烷基,可具有取代基的C3〜C8环烷基,可具有取代基的芳基甲基,可具有取代基的芳基乙基,芳香族 可具有取代基的烃环,可具有取代基的芳族杂环,或可具有取代基的脂族杂环; n表示1或2)。