The invention is directed to physiologically active compounds of formula (Ia):
wherein R1 is optionally substituted aryl or optionally substituted heteroaryl; R2 is hydrogen, halogen, lower alkyl or lower alkoxy; R3 is alkylene, alkenylene or alkynylene; R5 is hydrogen or lower alkyl; L2 is optionally substituted alkylene or alkenylene; Y is carboxy; and Z1 is NR5; and the corresponding N-oxides, and their prodrugs; and pharmaceutically acceptable salts and solvates (e.g. hydrates) 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 (&agr;4&bgr;1).
该发明涉及式(Ia)的生理活性化合物:
其中,R1是可选取代的芳基或可选取代的杂环芳基;R2是氢、卤素、低碳基或低氧基;R3是烷基、烯基或炔基;R5是氢或低碳基;
L2是可选取代的烷基或烯基;Y是羧基;Z1是NR5;以及它们的N-氧化物和前药;还有这些化合物及其N-氧化物和前药的药学上可接受的盐和溶剂(例如
水合物)。这些化合物具有有价值的药理学特性,尤其是调节VCAM-1和纤维连接蛋白与整合素V
LA-4(&agr;4&bgr;1)相互作用的能力。