| abstract |
The invention is directed to physiologically active compounds of general formula (I): wherein Het is an optionally substituted, saturated, partially saturated or fully unsaturated 8 to 10 membered bicyclic ring system containing at least one heteroatom selected from O, S or N; R1 is optionally substituted aryl, heteroaryl, alkyl, alkenyl, alkynyl, cycloalkyl or heterocycloalkyl; R2 is hydrogen, halogen, lower alkyl or lower alkoxy; Z?1 is NR5; L1¿ is a -R6-R7- linkage (where R6 is alkylene, alkenylene or alkynylene and R7 is a direct bond, cycloalkylene, heterocycloalkylene, aryldiyl, heteroaryldiyl, -C(=Z?3)-NR5-, -NR5-C(=Z3)-, -Z3¿-, -C(=O)-, -C(=NOR?5)-, -NR5-, -NR5-C(=Z3)-NR5¿-, -SO¿2?-NR?5-, -NR5-SO¿2-, -O-C(=O)-, -C(=O)-O-, -NR5-C(=O)-O- or -O-C(=O)-NR5-); L2 is an alkylene chain substituted by hydroxy, oxo, -OR4, -O-C(=O)-R?4, -N(R8¿)-C(=O)-R?9, -N(R8¿)-C(=O)-OR?9, -N(R8)-SO¿2-R9, or -NY3 Y4; and Y is carboxy or an acid bioisostere; and the corresponding N-oxides, and their prodrugs; and pharmaceutically acceptable salts and solvates of such compounds and their N-oxides and prodrugs. Such compounds have valuable pharmaceutical properties, in particular the ability to regulate the interaction of VCAM-1 and fibronectin with the integrin VLA-4 (α4β1) |