Compounds of the formula I
1
as defined and their pharmaceutically acceptable salts are inhibitors of &agr;
4
&bgr;
1
and/or &agr;
4
&bgr;
7
integrins, and are useful in inhibiting cell adhesion and in the therapeutic or prophylactic treatment of transplant rejection and inflammatory and autoimmune diseases.
公式I1所定义的化合物及其药用盐是α4β1和/或α4β7整合素的
抑制剂,并且在抑制细胞粘附以及治疗或预防移植排斥和炎症性和自身免疫疾病方面是有用的。