SUBSTITUTED beta -ALANINES

摘要

The invention is directed to physiologically active compounds of general formula (I), wherein R<1> is hydrogen, halogen, lower alkyl or lower alkoxy; X<1>, X<2> and X<6> independently represent N or CR<2>; and one of X<3>, X<4> and X<5> represents CR<3> and the others independently represents N or CR<2> [where R<2> is hydrogen, halogen, lower alkyl or lower alkoxy; and R<3> represents a group -L<1>-(CH2)n-C(=O)-N(R<4>)-CH2-CH2-Y]; and their prodrugs, and pharmaceutically acceptable salts and solvates of such compounds and their 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( alpha 4 beta 1).