| abstract |
FIELD: chemistry. n SUBSTANCE: invention relates to a compound of formula I: n or a pharmaceutically acceptable salt thereof, in which: one of A, B, C and D denotes N, and the rest independently denote CH and C(R 1 ); m equals a whole number from 1 to 4; n equals a whole number from 0 to 4; R 1 denotes halogen; R 2 and R 3 denote hydrogen; R 4 is selected from H, C 1-6 alkyl; Ar denotes aryl, optionally substituted with one or more halogen atoms; X denotes -C(R a )(R b )-, where R a and R b denote H; Y denotes -S(O) 2 -. The invention also relates to a pharmaceutical composition having CRTH2 receptor antagonist properties and containing a compound of formula I, to use of a compound of formula I when producing a drug for treating or preventing CRTH2 mediated diseases and a method for antagonistic action on CRTH2 receptor in mammals. n EFFECT: novel compound, which can be useful as a CRTH2 receptor antagonist, is obtained and described. n 16 cl, 6 ex, 2 tbl |