FIELD: organic chemistry, medicine, pharmacy.
SUBSTANCE: invention relates to compounds of the formula (I)
wherein Alk represents (C1-C6)-alkanediyl; n = 0 or 1; X represents -O- or -S-; R1 represents halogen atom, (C1-C6)-alkyl or (C1-C4)-alkyldioxy-group; D represents radical of formulas (a) 
, (b) 
, (c) 
, (d) 
, (e) 
, (f) 
, (g) 
, (h) 
, (i) 
, (j) 
and (k) 
. Invention relates also to a method for preparing these compounds and to a pharmaceutical composition used for treatment of diseases with antagonistic activity with respect to central α2-adrenoceptors. Invention provides preparing new compounds eliciting valuable pharmaceutical properties.
EFFECT: improved preparing methods.
12 cl, 3 tbl, 9 ex
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