FIELD: organic chemistry, heterocyclic compounds, medicine. SUBSTANCE: invention relates to derivatives of heterocyclic benzocycloalkenes of the general formula (I) 
where R1 means OH, C1-C6-alkoxy-group; R2 means C1-C6-alkyl; R3 means C1-C6-alkyl, -(CH2)1-2-aryl where aryl means phenyl, CH2-(C3-C7)-cycloalkyl; R4 and R5 means simultaneously or in contrast each to other H, Cl, F, C1-C6-alkyl, OH, C1-C6-alkoxy-group, -(CH2)0-2-aryl, -O-(CH2)0-2--aryl; ceparyl means unsubstituted phenyl or mono- substituted phenyl, -CON(R6R7). Invention describes also method of synthesis of these compounds. Substituted heterocyclic benzocycloalkenes show analgetic effect being their biological efficiency is mediated partially or mainly by opiate receptors as agonists. EFFECT: improved method of synthesis, valuable medicinal and biological properties of compounds. 10 cl, 2 tbl, 14 ex
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