Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1988-04-14
1990-02-27
Shah, Mukund J.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
544262, C07D48704, A61K 31505
Patent
active
049046667
ABSTRACT:
The present invention provides pyrazolo[3,4-d]-pyrimidines of the general formula: ##STR1## wherein R.sub.1 is a C.sub.1 to C.sub.6 -alkyl radical, a C.sub.2 to C.sub.6 -alkenyl radical, a C.sub.3 to C.sub.7 -cycloalkyl radical or an aryl radical, R.sub.2 is a C.sub.2 to C.sub.6 -alkenyl radical, a C.sub.3 to C.sub.7 -cycloalkyl radical or an aralkyl or hetaralkyl radical with 1 to 6 carbon atoms in the alkyl moiety and substituted, if desired, one or more times by halogen, C.sub.1 to C.sub.6 -alkyl, hydroxyl, C.sub.1 to C.sub.6 -alkoxy, C.sub.1 to C.sub.3 -haloalkyl, C.sub.3 to C.sub.7 -alkoxy carbonyl, aminocarbonyl, C.sub.2 to C.sub.7 -alkylaminocarbonyl, C.sub.3 to C.sub.13 -dialkylaminocarbonyl, cyano or C.sub.1 to C.sub.6 -alkylthio and R.sub.3 is a hydrogen atom or a C.sub.2 to C.sub.6 -alkyl radical substituted, if desired, one or more times by hydroxyl or is a tetrahydrofuranyl or tetrahydropyranyl radical, with the proviso that R.sub.2 cannot be an unsubstituted benzyl radical when R.sub.1 is a methyl radical, and the physiologically acceptable salts thereof with inorganic and organic acids.
The present invention also provides processes for the preparation of these compounds and pharmaceutical compositions containing them.
REFERENCES:
patent: 3682918 (1972-08-01), Druey et al.
patent: 3720674 (1973-03-01), Breuer et al.
Friebe Walter-Gunar
Kampe Wolfgang
Wilhelms Otto-Henning
Boehringer Mannheim GmbH
Cseh C. L.
Shah Mukund J.
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