CARBAMATES AND THEIR USE AS PHARMACEUTICALS

    公开(公告)号:CA1071644A

    公开(公告)日:1980-02-12

    申请号:CA286651

    申请日:1977-09-13

    Applicant: BASF AG

    Abstract: This invention is concerned with a process for the production of a new carbamate of the formula I: I, in which the dotted line denotes a double bond which may be hydrogenated, X is an alkylene bridge of 1 or 2 carbon atoms, R1 is hydrogen or alkyl of 1 to 4 carbon atoms, R2 is hydrogen, R3 is hydrogen and R4 is hydrogen, a linear of branched alkyl of 1 to 4 carbon atoms or a phenyl. This process comprises the steps of reacting a diene of the formula V: V, with a dienophile of the formula VI: VI, according to the Diels Alder reaction, at a temperature of from 15.degree. to 220.degree.C, and hydrogenating the double bond of the obtained unsaturated carbamate when desired. The so prepared new carbamate may be used as pharmaceuticals by virtue of their analgesic properties.

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