NOVEL PHENYLALANINE DERIVATIVES Russian patent published in 2010 - IPC C07D239/95 C07D413/04 C07D403/04 C07D487/04 C07D403/06 C07D413/06 C07D413/12 C07D403/12 A61K31/517 A61K31/519 A61K31/5377 A61P29/00 A61P3/10 A61K9/10 A61P11/06 A61P17/06 A61P35/00 A61P37/06 A61P37/08 

FIELD: chemistry.

SUBSTANCE: present invention relates to phenylalanine derivatives and their pharmaceutically acceptable salts. In formula (1) R11 is a hydroxyl group, an alkoxyl group having 1-6 carbon atoms, which can be substituted with a methoxy group, cycloalkoxyl group having 3-6 carbon atoms, or a benzyloxy group; R12 and R13 each independently represents a hydrogen atom, alkyl group having 1-6 carbon atoms, cycloalkyl group having 3-6 carbon atoms, acetyl group or methyloxycarbonyl group, or N(R12)R13 is a 1-pyrrolidinyl group, 1-piperidinyl group, 4-morpholinyl group; R14 is a methyl group; R₁' is a hydrogen atom, fluorine atom; X₁ is -CH(R1a)-, -CH(R1a)CH(R1b)-, -CH(R1a)CH(R1b)CH(R1c)-, -N(R1a)CH(R1b)CH(R1c)-, -OCH(R1a)CH(R1b)-, -OCH(R1a)CH(R1b)CH(R1c)- or 1,3-pyrrolidinylene, where R1a, R1b, each independently represents a hydrogen atom or a methyl group, and R1c is a hydrogen atom; Y₁₁ and Y₁₂ represent any of the combinations (CI, Cl), (CI, Me), (CI, F). Invention also relates to phenylalanine derivatives of formulae (2)-(14), given in the formula of invention.

EFFECT: obtaining a pharmaceutical composition having antagonistic effect on α4-integrin, containing a phenylalanine derivative as an active ingredient, a α4-integrin antagonist and a therapeutic agent.

65 cl, 51 tbl, 244 ex