FIELD: medicine, pharmaceutics.
SUBSTANCE: present invention refers to heterocyclic compounds of formula 
,
wherein X2 represents residue C-Z-R2 or C-R3, wherein Z represents NH or S; R1 is selected from structures 
, 
and 
R2 and R3 have the values specified in cl.1 of the patent claim, or to their pharmaceutically acceptable salts. The invention also refers to a pharmaceutical composition, a series of specific compounds, application of the declared compounds and to an intermediate compound for preparing the compounds of formula (I).
EFFECT: compounds under the invention have affinity to muscarine receptors and can be used in treating, relieving and preventing diseases and conditions mediated by muscarine receptors.
13 cl, 3 tbl
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