FIELD: organic chemistry, medicine, pharmacy. SUBSTANCE: invention relates to (S)-α-phenyl-2-pyridine ethaneamine of the formula (I) and its salts with inorganic acids showing anticonvulsant activity (value α = 3.7 mg/kg). Invention relates to also a drug showing anticonvulsant effect and containing a substance of the formula (I) taken at effective amount and pharmaceutically acceptable additions. Invention relates to also a method of treatment of patients with convulsions by administration of therapeutically effective dose of compound (I). Invention relates to also a method of synthesis of compound (I) that involves treatment of racemic ED50-phenyl-2-pyridine ethaneamine with chiral acid followed by selective precipitation of diastereomeric salt. EFFECT: improved method of synthesis, enhanced effectiveness of compound. 8 cl, 1 dwg, 2 ex
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