Xanthines substituted in the 8-position
    1.
    发明授权
    Xanthines substituted in the 8-position 失效
    在8位置取代了XANTHINES

    公开(公告)号:US3896119A

    公开(公告)日:1975-07-22

    申请号:US29279872

    申请日:1972-09-27

    Applicant: DEGUSSA

    CPC classification number: Y10S514/826

    Abstract: Compound are prepared having the formula:

    where R1 is hydrogen or methyl, R2 and R3 are hydrogen, methyl, hydroxy, or hydroxymethyl, R7 is hydrogen or methyl and R4 is alkyl of 1 to 6 carbon atoms, phenylalkyl of 7 to 12 carbon atoms or -NR5R6 where R5 and R6 individually are hydrogen or alkyl of 1 to 6 carbon atoms or R5 and R6 together with the nitrogen atom form a 5 to 7 membered ring which can have an additional oxygen, nitrogen or sulfur atom and also can contain 0 to 2 alkyl substituents with 1 to 4 carbon atoms or salts thereof. The compounds have outstanding broncholytic activity.

    10.
    发明专利
    未知

    公开(公告)号:FI780137A

    公开(公告)日:1978-07-18

    申请号:FI780137

    申请日:1978-01-16

    Applicant: DEGUSSA

    Abstract: Basic substituted alkyl theophylline derivatives of the formula (I) in which Alk is a straight or branched chain alkylene group with 2 to 4 carbon atoms and R is hydrogen or a methyl group are produced by catalytic hydrogenation of compounds of the formula (II) where the phenolic hydroxyl groups and/or the secondary basic nitrogen atom can contain protective groups using as the solvent a compound of the formula (III) where R', R'' and R''' are the same or different and are alkyl groups of 1 to 2 carbon atoms and R' together with R''' can also be an alkylene bridge with 3 to 4 carbon atoms and in a given case the protective groups present are split off.

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