A linker-drug represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof is provided. In formula (I), C is a conjugator, L is a linker unit, D is a toxin unit, and n is an integer ranging from 1 to 4. The structure of the conjugator is represented by formula (II). In formula (II), X is a leaving group, each of R1 and R2 is independently a single bond or —NH—, and Z is substituted aryl, heteroaryl, linear alkyl, cycloalkyl, heterocycloalkyl, or a combination thereof. The antibody is conjugated to the linker unit through a cysteine residue of the antibody. An antibody-drug conjugate (ADC) employing the above linker-drug is also provided.
本发明提供了一种由式(I)表示的连接剂-药物或其药学上可接受的盐或溶液。在式 (I) 中,C 是共轭物,L 是连接体单元,D 是毒素单元,n 是 1 至 4 的整数。在式 (II) 中,X 是离去基团,R1 和 R2 各自独立地是单键或-NH-,Z 是取代的芳基、杂芳基、直链烷基、环烷基、杂环烷基或它们的组合。
抗体通过
抗体的半胱
氨酸残基与连接体单元连接。还提供了一种采用上述连接体-药物的
抗体-药物共轭物(ADC)。