FIELD: pharmaceutical industry. SUBSTANCE: present invention describes compounds of formula (I): wherein R1 is phenyl optionally substituted by halogen atom, CF3 or naphthyl; R2 is H, C1-C4-alkoxy group, halogen or S(O)n(C1-C4-alkyl; X is CH2, CHCH3, -CH(OH)-, -CO- or - O-, n is 2, and pharmaceutically acceptable salts. The present invention also describes pharmaceutical compositions which comprise compounds of formula (I) as active ingredient. EFFECT: improved properties of pharmaceutical compositions. 9 cl, 2 tbl
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