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    Benzimidazole Derivatives
    1.
    发明授权
    Benzimidazole Derivatives 失效
    苯并咪唑衍生物

    公开(公告)号：US4942245A

    公开(公告)日：1990-07-17

    申请号：US180065

    申请日：1988-04-11

    申请人： Kuniyoshi Masuzawa ,  Kyuya Okamura ,  Keigo Nishino ,  Mitsuo Ohashi ,  Katsuya Awano

    发明人： Kuniyoshi Masuzawa ,  Kyuya Okamura ,  Keigo Nishino ,  Mitsuo Ohashi ,  Katsuya Awano

    IPC分类号： C07D235/12 ,  C07D235/28

    CPC分类号： C07D235/28 ,  C07D235/12

    摘要： Benzimidazole derivatives of the following formula, ##STR1## wherein R.sup.1 indicates hydrogen atom, lower alkyl group having carbon atoms of 1 to 6 or dimethylaminopropyl group, R.sup.2 indicates hydrogen atom or lower alkanoyl group having carbon atoms of 1 to 3, R.sup.3 indicates hydrogen atom, lower alkyl group having carbon atoms of 1 to 3 or lower alkanoyl group having carbon atoms of 1 to 3, X indicates sulfur atom, sulfinyl group, sulfonyl group, amino group or methylene group, A indicates alkylene group having carbon atoms of 1 to 12, which alkylene group may optionally be substituted by hydroxy group or lower alkyl group having carbon atoms of 1 to 3, --(CHR')N--CR".dbd.CR"--(CHR')M--, ##STR2## (in which R' and R" are each independently hydrogen atom, lower alkyl group having carbon atoms of 1 to 3 or hydroxy group, and n and m are equal to 0, 1, 2 or 3) and Y indicates oxygen atom or sulfur atom; their acid or alkali salts and hydrate thereof are useful as antiallergic agents.