An antibody-drug conjugate having a cyclic benzylidene acetal linker represented by formula (1) or formula (2), wherein Y is an antibody; D is a drug; R1 and R6 are each independently a hydrogen atom or a hydrocarbon group; R2, R3, R4 and R5 are each independently an electron-withdrawing or electron-donating substituent or a hydrogen atom; s is 1 or 2, t is 0 or 1, and s+t is 1 or 2; w is an integer of 1 to 20; and Z1 and Z2 are each independently a selected divalent spacer:
一种
抗体-药物共轭物,具有由式(1)或式(2)表示的环状亚苄基
缩醛连接体,其中 Y 是
抗体;D 是药物;R1 和 R6 各自独立地是氢原子或烃基;R2、R3、R4 和 R5 各自独立地是一个取电子或供电子的取代基或一个氢原子;s 是 1 或 2,t 是 0 或 1,s+t 是 1 或 2;w 是 1 至 20 的整数;以及 Z1 和 Z2 各自独立地是一个选定的二价间隔物: