[EN] PROCESS FOR PREPARING ZOLPIDEM AND ITS INTERMEDIATE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE ZOLPIDÉM ET DE SON INTERMÉDIAIRE
申请人:SUVEN LIFE SCIENCES LTD
公开号:WO2009007995A1
公开(公告)日:2009-01-15
The present invention relates to an improved process for the preparation of 6- methyl-2-[4-methylphenyl]imidazo[l,2-a]pyridine-3-N,N-dimethyl acetamide having formula (1). The compound of formula (1) has adopted name 'Zolpidem'. The present invention also relates to novel intermediate of the formula (2) and a process for its preparation.Wherein R represents methyl, ethyl, propyl, butyl, isopropyl, isobutyl or tertiary butyl group. The novel intermediate of formula (2) is used in preparation of Zolpidem having formula (1). Zolpidem is useful in the treatment of anxiety, sleep disorders and convulsion.
本发明涉及一种改进的制备6-甲基-2-[4-甲基苯基]咪唑[1,2-a]吡啶-3-N,N-二甲基乙酰胺(化学式(1))的方法。化合物化学式(1)的通用名称为“唑吡坦”。本发明还涉及化学式(2)的新型中间体及其制备方法。其中R代表甲基、乙基、丙基、丁基、异丙基、异丁基或叔丁基基团。化学式(2)的新型中间体用于制备化合物化学式(1)的唑吡坦。唑吡坦在治疗焦虑、睡眠障碍和惊厥方面具有用途。