CAMPTOTHECINS CONJUGATED IN POSITION 7 TO CYCLIC PEPTIDES AS CYTOSTATIC AGENTS

摘要

Compounds of Formula (I) are described in which the R1 group is as defined in the specification and includes the condensation of the camptothecin molecule in position 7 with a cyclopeptide containing the RGD sequence. Said compounds are endowed both with high affinity for integrin receptors alphavbeta3 and alphavbeta5 and with selective cytotoxic activity on human tumor cell lines at micromolar concentrations.