FIELD: medicine, pharmaceutics.
SUBSTANCE: present invention describes compounds of formula I: 
formula I or its pharmaceutically acceptable salt, where the radical values R3, R4, R2, X1, X2, R1 are such as presented in claim 1. Also, the invention describes a pharmaceutical composition exhibiting a Tec-family kinase inhibitor activity and based on the compounds of formula I, a method of Tec-family kinase activity inhibition, and a method of producing the compound of formula I.
EFFECT: produced and described new compounds which are effective as Tec-family (eg, Tec, Btk, Itk/Emt/Tsk, Bmx, Txk/Rlk) protein kinase inhibitors, and acceptable compositions are applicable for treatment or prevention of some diseases, disorders or conditions including but not limited, autoimmune, inflammatory, proliferative or hyperproliferative, or immunologically mediated diseases.
50 cl, 18 ex, 3 tbl
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