FIELD: organic chemistry, pharmacy. SUBSTANCE: products: derivatives of pyrazolo-[1,5-a] -pyridine of the general formula (I) 
where R1 - phenyl; R2 - lower (alkanoyl) lower alkyl carboxy (lower) alkyl, or substituted carboxy (lower) alkyl; A - lower alkenylene, or their pharmaceutically acceptable salts and method of their synthesis. Reagent 1: compounds of the formula (II) 
. Reagent 2: piperidine derivatives of the formula (III) 
. Method involves optional stages of carboxy-protective groups removing and/or synthesis of compounds of the formula (I) 
where R2 means amidated carboxy (lower) alkyl. Synthesized compounds are adenosine antagonists. ???EFFECT: improved method of synthesis. 6 cl
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