XANTHINE DERIVATIVES HAVING ANTIALLERGIC ACTIVITY AND PHARMACOLOGICAL PREPARATIONS CONTAINING THEM

摘要

Compounds of the formula or physiologically acceptable salts thereof in which formula R1 is methyl, ethyl or n-propyl, R2 is methyl or n-propyl and R3 is methods for the preparation thereof; intermediates useful for their preparation; pharmaceutical preparations containing at least one of these compounds; and the use thereof in the treatment of allergy and bronchial asthma.