Synthesis of intermediate for producing pramipexole
    61.
    发明专利
    Synthesis of intermediate for producing pramipexole 审中-公开
    中间体合成生产PRAMIPEXOLE

    公开(公告)号:JP2007185190A

    公开(公告)日:2007-07-26

    申请号:JP2007002980

    申请日:2007-01-11

    摘要: PROBLEM TO BE SOLVED: To provide a method for synthesizing an intermediate for producing pramipexole. SOLUTION: The method for synthesizing the intermediate, an acid or its salt represented by formula(I) as a single (R)- or (S)-enantiomer, is provided, comprising the following process: Under effective conditions, an ester or its salt represented by formula(II) as an (R,S)-enantiomer mixture and a lipase derived from Candida antarctica are put to make contact with each other to obtain a mixture comprising an acid of the single (R)-enantiomer and an ester of the single (S)-enantiomer, the ester is then hydrolyzed to obtain the corresponding acid as the single (S)-enantiomer, and, if desired, the acid as either the (R)- or (S)-enantiomer is converted to its salt. In the above formulas(I) and (II), R is a protected amino group; an asterisk * denotes a stereoisomeric carbon atom; R 1 is a straight-chain or branched-chain 1-6C alkyl group that may be substituted with a phenyl group as appropriate; and the asterisk * and R are as defined above. COPYRIGHT: (C)2007,JPO&INPIT

    摘要翻译: 待解决的问题:提供一种合成制备普拉克索的中间体的方法。 解决方案:提供用于合成中间体,由式(I)表示的酸或其盐作为单一(R) - 或(S) - 对映体的方法,包括以下方法:在有效条件下, 将作为(R,S) - 对映体混合物的式(II)表示的酯或其盐与源自南极假丝酵母的脂肪酶相互接触,得到包含单(R) - 对映异构体 和单(S) - 对映体的酯,然后将酯水解,得到相应的酸作为单(S) - 对映体,并且如果需要,酸作为(R) - 或(S) - 对映异构体转化为其盐。 在上式(I)和(II)中,R是被保护的氨基; 星号*表示立体异构碳原子; R SB 1是可以适当地被苯基取代的直链或支链的1-6C烷基; 星号*和R如上所定义。 版权所有(C)2007,JPO&INPIT