1. The compound of formula (I) Formula (I) or a pharmaceutically acceptable salt thereof, wherein R is H or C-Ci-alkyl, R ′ is H, halogen or C-Ci-alkyl, X is —O— —NH—, N (C-C1-6 alkyl) -, -S- or -CH-, n is 0, 1, 2 or 3 when X is -CH-, n is 1 or 2, Ar is phenyl or heteroaryl, each which is unsubstituted or substituted by one or more groups selected from the group consisting of CN, halogen, OH, -NH, -NHR, -NRR, C-C 1-6 alkyl, C 1 -C 2 alkoxy and C 1 -C 1 haloalkyl, and Y is absent or represents -O -Ar ′, -NH-Ar ′, -N (C-C1-6 alkyl) -Ar ′ or - (CH) -Ar ′, where Ar ′ is phenyl or heteroaryl, each of which is unsubstituted or substituted by one or more groups selected from the group consisting of CN, halogen, OH, -NH, -NHR, -NRR, C-C1-6 alkyl, C-C1-6 alkoxy and Ci-haloalkyl, and in each case, R and R are independently C-C1-6. 2. The compound of claim 1, wherein R is CH.3. The compound of claim 1, wherein R ′ is H.4. The compound of claim 1, wherein X is —O — .5. The compound of claim 1, wherein n is 1 or 2.6. The compound of claim 1, wherein Ar is unsubstituted phenyl or phenyl substituted with one or more groups selected from the group consisting of CN, F, CF, Cl, OMe and CH, or Ar is pyridinyl or thiophenyl, each of which is unsubstituted or is substituted by one or more F.7. The compound of claim 1, wherein Y is absent or Y is —Ο-Αr ′, where Ar ′ is unsubstituted phenyl or phenyl substituted with one or more groups selected from the group consisting of CF, F, Cl, CN and CH , or Ar ′ is pyridinyl or pyrimidinyl, each of which is independently1. Соединение формулы (I)Формула (I)или его фармацевтически приемлемая соль,где R представляет собой Н или C-Cалкил,R′ представляет собой Н, галоген или C-Cалкил,X представляет собой -O- -NH-, -N(C-Cалкил)-, -S- или -CH-,n равно 0, 1, 2 или 3, когда X представляет собой -CH-, n имеет значение 1 или 2,Ar представляет собой фенил или гетероарил, каждый из которых является незамещенным или замещен одной или несколькими группами, выбра
