FIELD: chemistry.
SUBSTANCE: invention relates to an azaindole derivative of formula (1) or a salt thereof: 
(1), where R1 is a cyclopentenyl group; a cyclohexenyl group; phenyl group; furanyl group which is optionally substituted with a group selected from the group consisting of a formyl group and C1-C6 alkyl group (which is optionally substituted with a group selected from the group consisting of a hydroxy group and a di- or mono-(C1-C6 alkyl)amino group); 1H-pyrazolyl group which is optionally substituted with a group, selected from the group consisting of C1-C6 alkyl group and an oxetanyl group; thiazolyl group; oxazolyl group; an isoxazolyl group; 1,3,4-thiadiazolyl group; 1,2,4-oxadiazolyl group; 1,3,4-oxadiazolyl group which is optionally substituted with C1-C6 alkyl group; pyridyl group which is optionally substituted with a group selected from the group consisting of a halogen atom, an amino group, a hydroxy group, an N-oxide group, C1-C6 alkyl group (which is optionally substituted by a hydroxy group) and C1-C6 alkoxy group (which is optionally substituted by a halogen atom); dihydropyranyl group; dihydrofuranyl group; or a 4,5-dihydro-1,3,4-oxadiazolyl group which is optionally substituted with a group selected from the group consisting of oxo and C1-C6 alkyl group, R2 represents a hydrogen atom; cyano group; (C1-C6 alkoxy)carbonyl group; carbamoyl group; di- or mono-(C1-C6 alkyl)carbamoyl group; C1-C6 alkyl group which is optionally substituted with a group selected from the group consisting of a hydroxy group, C1-C6 alkoxy groups, di- or mono-(C1-C6 alkyl)amino group and a morpholinyl group; C1-C6 alkoxy group; or a pyrazolyl group which is optionally substituted with C1-C6 alkyl group, m is 0, n is 0 or 1, R4 is C2-C6 alkenyl group, and in the formula (I) the following structure: 
represents any of the following structures: 
.
EFFECT: compounds of the invention have a selective JAK3 inhibitory effect.
9 cl, 9 tbl, 59 ex
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