The present invention provides Ligand-Drug Conjugates and Drug-Linker Compounds comprising a methylene carbamate unit. The invention provides inter alia, Ligand-Drug Conjugates, wherein the Ligand-Drug Conjugate is comprised of a Self-immolative Assembly Unit having a methylene carbamate unit for conjugation of a drug to a targeting ligand, methods of preparing and using them, and intermediates thereof. The Ligand-Drug Conjugates of the present invention are stable in circulation, yet capable of inflicting cell death once free drug is released from a Conjugate in the vicinity or within tumor cells.
本发明提供了包含亚
甲基氨基甲酸酯单元的
配体-药物共轭物和药物-连接体化合物。本发明特别提供了
配体-药物共轭物,其中
配体-药物共轭物由具有亚
甲基氨基甲酸酯单元的自巯基组装单元组成,用于将药物与靶向
配体共轭;本发明还提供了
配体-药物共轭物的制备和使用方法及其中间体。本发明的
配体-药物共轭物在循环中是稳定的,但一旦从肿瘤细胞附近或内部的共轭物中释放出游离药物,就能造成
细胞死亡。