FIELD: organic chemistry, medicine, neurology, pharmacy. SUBSTANCE: invention relates to novel derivatives of 1,3-dioxol[4,5-h][2,3]benzodiazepine of the formula (I) 
, method for preparing these compounds and pharmaceutical compositions comprising these active substances that are used for selective inhibition of AMPA/kainite receptors. In compound of the formula (I) A and B are hydrogen atoms; R1 is group of the formula 
-R where R is halogen atom, pyridyl group or group -NR3R4 where R3, R4, n and m have values defined in the invention claim and R2 means nitro- or amino-group. Invention relates also to method of treatment of patients with epilepsy or neurodegenerative diseases. Invention provides preparing novel compounds eliciting the curative effect that allows to use them in medicine. EFFECT: improved preparing method, valuable medicinal properties of compounds. 16 cl, 4 tbl, 64 ex
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