3.
    发明专利
    未知

    公开(公告)号:DE69008431D1

    公开(公告)日:1994-06-01

    申请号:DE69008431

    申请日:1990-06-22

    Abstract: Process for preparing imidazole derivatives of the general formula (II) : wherein R and R independently are loweralkyl, by desulfurizing a mercaptoimidazole derivative of the general formula (I) : wherein R and R are as defined above, with nitric acid optionally in the presence of a nitrite. The compounds of the formula (II) are useful for the treatment of glaucoma.

    4.
    发明专利
    未知

    公开(公告)号:AT104975T

    公开(公告)日:1994-05-15

    申请号:AT90111875

    申请日:1990-06-22

    Abstract: Process for preparing imidazole derivatives of the general formula (II) : wherein R and R independently are loweralkyl, by desulfurizing a mercaptoimidazole derivative of the general formula (I) : wherein R and R are as defined above, with nitric acid optionally in the presence of a nitrite. The compounds of the formula (II) are useful for the treatment of glaucoma.

    PROCESS FOR PRODUCING DIHYDROFURANONE DERIVATIVES

    公开(公告)号:HU205096B

    公开(公告)日:1992-03-30

    申请号:HU152891

    申请日:1991-05-07

    Abstract: The present invention provides a process for preparing dihydrofuranone derivative of the fornula (III): wherein R and R are individually lower alkyl, and R is hydrogen or lower alkyl, by reacting a dihydrofuranone derivative of the formula (I): wherein R is as defined above, with a malonic acid derivative of the formula (II): wherein R and R are as defined above, in the presence of an alkalimetal alkoxide and/or an alkalimetal hydroxide.

    PROCESS FOR PRODUCING DIHYDROFURANONE DERIVATIVES

    公开(公告)号:HUT57757A

    公开(公告)日:1991-12-30

    申请号:HU152891

    申请日:1991-05-07

    Abstract: The present invention provides a process for preparing dihydrofuranone derivative of the fornula (III): wherein R and R are individually lower alkyl, and R is hydrogen or lower alkyl, by reacting a dihydrofuranone derivative of the formula (I): wherein R is as defined above, with a malonic acid derivative of the formula (II): wherein R and R are as defined above, in the presence of an alkalimetal alkoxide and/or an alkalimetal hydroxide.

    10.
    发明专利
    未知

    公开(公告)号:DE69008431T2

    公开(公告)日:1994-09-29

    申请号:DE69008431

    申请日:1990-06-22

    Abstract: Process for preparing imidazole derivatives of the general formula (II) : wherein R and R independently are loweralkyl, by desulfurizing a mercaptoimidazole derivative of the general formula (I) : wherein R and R are as defined above, with nitric acid optionally in the presence of a nitrite. The compounds of the formula (II) are useful for the treatment of glaucoma.

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