A targeted therapeutic agent comprising a compound of formula (I): B–L–D, wherein: B is a low molecular weight binding moiety for Carbonic Anhydrase IX (CAIX); D is a drug moiety; and L is a linker group that undergoes cleavage in vivo for releasing said drug moiety in an active form. The drug moiety is suitably a cytotoxic agent for targeted delivery to cancer cells expressing CAIX. The binding moiety B suitably comprises a sulfonamidothiadiazole moiety. The binding moiety B may comprise one, two or more groups capable of binding to CAIX. The linker group suitably comprises a disulfide bond and/or a triazole group and/or a cleavable peptide group.
一种靶向治疗剂,包括化合物的结构式(I):B–L–D,其中:B是一种低分子量结合基团,用于
碳酸酐酶IX(CAIX);D是一种药物基团;L是一个在体内发生裂解以释放所述药物基团的连接基团。药物基团适宜是一种针对表达CAIX的癌细胞的细胞毒性药剂。结合基团B适宜包括
磺胺基
噻二唑基团。结合基团B可以包括一个、两个或更多能够结合CAIX的基团。连接基团适宜包括二
硫键和/或三唑基团和/或可裂解的肽基团。