PROCESS FOR PRODUCING 8-SUBSTITUTED PURINE DERIVATIVES FUNCTIONING AS SELECTIVE ADENOSINE RECEPTOR, AS WELL AS PHARMACEUTICAL COMPOSITIONS COMPRISING SAME AS ACTIVE INGREDIENT

摘要

The present invention relates to a process for the preparation of new compounds of the general formula (I) in which R 1, R 2 and R 3 are alkylpiperidine; 0, 1 or 2; n is 1, 2 or 3; X is (-OR4) - or (-YH) - -, wherein R4 is hydrogen or alkyl; Y is [NH (CH2) PNH -] - group; p is 2, 3 or 4. The novel compounds of the present invention have selective A1-adenosine receptor antagonist activity. ŕ