FIELD: medicine, pharmaceutics.
SUBSTANCE: there are described new compounds of formula 
I or their pharmaceutically acceptable salts, wherein R1 means phenyl once or twice substituted by C1-6 alkyl, C1-6 alkoxy, halogen or 5-6-merous heteroaryl; R2 is phenyl once or twice substituted by C1-6 alkyl, C1-6 alkoxy, halogen, halogen-C1-6alkyl, halogen-C1-6alkoxy, C1-6 alkylsulphonyl, nitrile, etc. R3 means H or C1-6 alkyl; X - -O-, -NRa-,-S(O)m- or CRbRc, wherein Ra - H, C1-6 alkyl or C1-6 alkylcarbonyl; Rb and Rc mean H or together with the atom to which they are attached, form 5-merous cycle additionally containing 2 oxygen atoms; m is equal to 0-2; Y means -NRc-, wherein Rc - H or C1-6 alkyl.
EFFECT: compounds can find application in medicine for treating autoimmune and inflammatory diseases related to P2X7 purinoceptor.
15 cl, 1 tbl, 10 ex
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