FIELD: organic chemistry. SUBSTANCE: product: piperidine compounds of the formula (I): 
where: R1 and R2 - H, C1C5-alkyl; R3 - H, C1-C10-alkyl and others; A - OR4,NR5R6,. Reagent 1: substituted piperidine. Reagent 2: α-methylenealkyl ether. Pharmaceutical composition has 0.1-90 weight % compound of the formula (I) as an active substance and pharmaceutically acceptable carrier. Synthesized compounds were used in medicine. EFFECT: improved method of synthesis, enhanced effectiveness. 11 cl, 2 tbl
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