The present invention relates to prodrugs which are capable of being converted into prodrug intermediates of a cytotoxic or cytostatic drug, by the catalytic action of FAP&agr;, said prodrugs exhibit
an oligomeric part comprising up to 9 amino carboxylic acid residues, the amide bond between the C-terminal amino carboxylic acid and the preceding amino acid thereof is recognized and cleaved by FAP&agr; in the immediate environment of a target cell, and
a cytotoxic or cytostatic part, wherein the N-terminal amino function of the oligomeric part is attached to a capping group (Cg).
本发明涉及能够在 FAP&agr 催化作用下转化为细胞毒性或细胞抑制药物的原药中间体的原药,所述原药表现为
由最多 9 个
氨基
羧酸残基组成的低聚物部分,在靶细胞的直接环境中,C 端
氨基
羧酸与前一个
氨基之间的酰胺键被 FAP&agr 识别并裂解,以及
细胞毒性或细胞抑制部分,其中低聚物部分的 N 端
氨基功能连接到一个封顶基团(Cg)上。