Compounds of formula (1) are described: in which X is an —O— or —S— atom or —N(R
2
)— group and R
1
is a group Ar
1
L
2
Ar
2
Alk- in which Ar
1
is an optionally substituted aromatic or heteroaromatic group, L
2
is a covalent bond or a linker atom or group, Ar
2
is an optionally substituted bicyclic heteroarylene group and Alk is a chain —CH
2
—CH(R)—, —CH═C(R)—, OR—CH(CH
2
R)— or which R is a carboxylic acid (—CO
2
H) or a derivative or biostere thereof. The compounds are selective inhibitors of alpha 4 integrins such as &agr;
4
&bgr;
1
and are of use in modulating cell adhesion for the prophylaxis or treatment of inflammatory diseases or disorders, such as rheumatoid arthritis, in which the extravasculation of leukocytes plays a role.
1
描述了公式(1)的化合物:其中X是- O-或-S-原子或-N(R2)-基团,R1是Ar1
L2Ar2Alk-基团,其中Ar1是可选取代的芳香族或杂芳族基团,
L2是共价键或连接原子或基团,Ar2是可选取代的双环杂芳基基团,Alk是链-
CH2-CH(R)-,-CH═C(R)-,OR-CH( R)-或R是
羧酸(-CO2H)或其衍
生物或
生物立体异构体。这些化合物是α4整合素的选择性
抑制剂,例如α4β1,并且可用于调节细胞黏附,用于预防或治疗炎症性疾病或疾病,例如类风湿性关节炎,其中白细胞的越出在其中起作用。