The present invention provides prodrugs of analogs of the anti-tumor antibiotic CC-1065 having a cleavable protective group containing a sulfonic acid containing phenyl carbamate, in which the protecting group confers enhanced water solubility upon the prodrug, and in which the prodrug also has a moiety, such as a sulfide or a disulfide, that can conjugate to a cell binding reagent such as an antibody, and for the therapeutic use of such prodrug and conjugates, and for processes for preparing such prodrugs and conjugates.
本发明提供了CC-1065抗肿瘤抗生素类似物的前药,其中包含一种可剪除的保护基,该保护基含有含
磺酸基的
苯基氨基甲酸酯,该保护基赋予前药增强的
水溶性,并且该前药还具有一种基团,例如
硫醚或二
硫醚,可以与细胞结合试剂(例如
抗体)结合,并用于这种前药和结合物的治疗用途,以及制备这种前药和结合物的过程。