The present invention provides antibody-payload conjugates having a payload-to-antibody ratio of 1. The antibody-payload conjugate is according to structure (1): formula (1), wherein: - a, b, c and d are each independently 0 or 1; - e is an integer in the range of 0 - 10; - L1, L2 and L3 are linkers; - D is a payload; - BM is a branching moiety; - Su is a monosaccharide; - G is a monosaccharide moiety; - GlcNAc is an N-acetylglucosamine moiety; - Fuc is a fucose moiety; - Z are connecting groups. The invention further provides a method for preparing the antibody-payload conjugate according to the invention, an intermediate compound in that preparation method, and medical uses of the antibody-payload conjugate according to the invention.
本发明提供了一种
抗体-有效载荷偶联物,其有效载荷与
抗体的比例为1。所述
抗体-有效载荷偶联物如结构(1)所示:公式(1),其中:- a、b、c和d每个独立地为0或1;- e是0至10之间的整数;- L1、
L2和L3是连接臂;- D是有效载荷;- BM是分支基团;- Su是
单糖;- G是
单糖基团;- GlcNAc是N-乙酰
葡萄糖胺基团;- Fuc是岩藻糖基团;- Z是连接基团。本发明还提供了根据本发明制备
抗体-有效载荷偶联物的方法、该制备方法中的中间化合物,以及根据本发明的
抗体-有效载荷偶联物的医疗用途。