FIELD: chemistry.
SUBSTANCE: compounds of formula (I) can be efficient with respect to diseases, in which phosphorylation of Tau protein takes place. 
, R3 stands for CONR1R2, where R1 and R2 can be substituted with heterocycle; R5, R6, R7 independently on each other are selected from halogen and phenyl; R1, R2 independently on each other stand for hydrogen, (C1-C6)alkyl or together with nitrogen of group CONR1R can form heterocycle.
EFFECT: obtaining novel biologically active compounds.
4 cl, 3 ex
