Phenylalanine derivatives or pharmaceutically acceptable salts thereof, alpha 4 integrin antagonist, therapeutic agent or preventive agent for inflammatory diseases, and pharmaceutical composition

摘要

"PHENYLALANINE DERIVATIVES OR PHARMACEUTICALLY ACCEPTABLE SALTS, ALPHA 4 INTEGRINE ANTAGONIST, THERAPEUTIC AGENT OR PREVENTIVE AGENT FOR INFLAMMATORY DISEASES, AND PHARMACEUTICAL COMPOSITION". Specified phenylalanine derivatives and their analogs exhibit Î ± 4 integrin antagonist activity. They are used as therapeutic agents for various? 4 integrin-related diseases.