Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Bacterium or component thereof or substance produced by said...
Patent
1980-05-12
1981-08-18
Rizzo, Nicholas S.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Bacterium or component thereof or substance produced by said...
544267, 544272, C07D47306
Patent
active
042846331
ABSTRACT:
The present invention provides xanthine derivatives of the general formula: ##STR1## wherein one of the symbols R.sub.1 and R.sub.2 stands for a methyl radical and the other for a radical of the general formula: ##STR2## wherein R.sub.3 is a hydrogen atom or an acyl radical; and the pharmacologically acceptable salts thereof. The present invention also provides processes for the preparation of these compounds and pharmaceutical compositions containing them and is also concerned with the use thereof for the preparation of pharmaceutical compositions for the treatment of allergies.
REFERENCES:
patent: 3642798 (1972-02-01), Nitta et al.
patent: 3996361 (1976-12-01), Friebe et al.
patent: 4061753 (1977-12-01), Bodor et al.
patent: 4086347 (1978-04-01), Friebe et al.
patent: 4212866 (1980-07-01), Friebe et al.
Friebe Walter-Gunar
Kampe Wolfgang
Roesch Androniki
Thiel Max
Wilhelms Otto-Henning
Boehringer Mannheim GmbH
Rizzo Nicholas S.
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