PYRAZOLO(3,4-D) PYRIMIDINES, PROCESSES FOR THE PREPARATION THEREOF AND PHARMACEUTICAL COMPOSITIONS CONTG. THEM

Pyrazolo[3,4-d]pyrimidines of the formula I in which R1 denotes a C1- to C6-alkyl radical, a C2- to C6-alkenyl radical, a C3- to C7-cycloalkyl radical or an aryl radical, R2 denotes a C2- to C6-alkenyl radical, a C3- to C7-cycloalkyl radical or an aralkyl or hetaralkyl radical having 1 to 6 carbon a...

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Bibliographic Details
Main Author WALTER-GUNAR FRIEBE ET AL
Format Patent
LanguageEnglish
Published 02.11.1988
Edition4
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Summary:Pyrazolo[3,4-d]pyrimidines of the formula I in which R1 denotes a C1- to C6-alkyl radical, a C2- to C6-alkenyl radical, a C3- to C7-cycloalkyl radical or an aryl radical, R2 denotes a C2- to C6-alkenyl radical, a C3- to C7-cycloalkyl radical or an aralkyl or hetaralkyl radical having 1 to 6 carbon atoms in the alkyl moiety and which, if desired, is mono- or polysubstituted by halogen, C1- to C6-alkyl, hydroxyl, C1- to C6-alkoxy, C1- to C3-haloalkyl, C3- to C7-alkoxycarbonyl, aminocarbonyl, C2- to C7-alkylaminocarbonyl, C3- to C13-dialkylaminocarbonyl, cyano or C1- to C6-alkylthio and R3 denotes hydrogen, a C2- to C6-alkyl radical which, if desired, is mono- or polysubstituted by hydroxyl, a tetrahydrofuranyl radical or a tetrahydropyranyl radical, with the proviso that R2 cannot be unsubstituted benzyl if R1 represents the methyl group, and their physiologically tolerable salts of inorganic or organic acids are used as medicaments for the treatment of allergic diseases and of bronchospastic and bronchoconstrictive reactions due to inflammation.
Bibliography:Application Number: CN19881002247