PYROGLUTAMATE SALTS AND THEIR USE IN THE OPTICAL RESOLUTION OF INTERMEDIATES FOR THE SYNTHESIS OF DEXTROCETIRIZINE AND LEVOCETIRIZINE
    81.
    发明授权
    PYROGLUTAMATE SALTS AND THEIR USE IN THE OPTICAL RESOLUTION OF INTERMEDIATES FOR THE SYNTHESIS OF DEXTROCETIRIZINE AND LEVOCETIRIZINE 有权
    PYROGLUTAMATSALZE和它们在中间体的光学分离FOR DEXTROCETIRIZIN和左西替利的合成

    公开(公告)号:EP1858866B1

    公开(公告)日:2009-06-10

    申请号:EP06707220.7

    申请日:2006-02-23

    申请人: UCB FARCHIM, S.A.

    IPC分类号: C07D295/088 C07D207/28

    CPC分类号: C07D295/088 C07D207/28

    摘要: The present invention relates to (S)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]- ethoxyacetamide - (S)-pyrrolidone-5-carboxylic acid salt; (R)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide - (S)-pyrrolidone-5-carboxylic acid salt; (S)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide - (R)-pyrrolidone-5-carboxylic acid salt; or (R)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxycetamide - (R)-pyrrolidone-5-carboxylic salt. The present invention relates also to a process for preparing (S)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide (I) and (R)-2-[4-(4-chlorobenzhydryl) piperazin-1-yl]-ethoxyacetamide (II) by chemical resolution of a mixture. These compounds are respectively intermediates for the synthesis of dextrocetirizine and levocetirizine.