| abstract |
Disclosed are compounds of formula (I) in which X represents alkylene with 1-6 C atoms or 1,4-piperidyl; Y is absent or represents O, CONH or -CC-; R<1> represents H, CN, N3, NH2, H2N-C(=NH) or H2N-(C=NH)-NH (the primary amino groups can also be provided with conventional amino protective groups); R<2>, R<3> each independently of one another represent H, A, A-SO2-, Ar-SO2, campher-10-SO2-, COOA or a conventional amino protective group; A, R<4> each independently of one another represent H or alkyl with 1-10 C atoms; and Ar represents phenyl or benzyl which is unsubstituted or single-substituted with CH3. Also disclosed are the physiologically tolerable salts of these compounds. The compounds and salts thereof can be used as alpha v-integrin inhibitors, in particular for treating tumours, osteoporoses, osteolytic disorders and for suppressing angiogenesis. |