FIELD: medicine, pharmaceutics.
SUBSTANCE: invention refers to pyridine derivatives of formula (I) 
wherein A, R1, R2, R3, R4, R5, R6 and R7 are presented in the description, preparing and using them as pharmaceutically active compounds possessing SP1/EDG1 receptor agonist activity.
EFFECT: using the declared compounds or pharmaceutically acceptable salts thereof for preparing a pharmaceutical composition for preventing or treating the diseases or disorders associated with the activated immune system.
13 cl, 76 ex, 2 tbl
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