申请人:——
公开号:US20020091242A1
公开(公告)日:2002-07-11
Novel acid-sensitive compounds comprising a cyclic ortho-ester that is acid-sensitive, and their salts, and comprising at least one hydrophilic substituent. These compounds are useful, for example, for forming conjugates (liposomes, complexes, nanoparticles and the like) with biologically active substances and releasing them into cellular tissues or compartments whose pH is acidic, or as nonionic surfactant for stabilizing particles encapsulating a biologically active substance and then destabilizing them in acid medium, or alternatively as a vector covalently linked to a therapeutic molecule so as to release said therapeutic molecule into the cellular tissues or compartments whose pH is acidic.
包含一种对酸敏感的环状邻酯化合物及其盐的新型酸敏感化合物,其中至少包含一个亲水性取代基。这些化合物可用于与生物活性物质形成共轭物(如脂质体、复合物、纳米粒子等),并将其释放到pH值为酸性的细胞组织或区室中,或作为非离子表面活性剂用于稳定封装生物活性物质的粒子,然后在酸性介质中使其变得不稳定,或作为共价连接到治疗分子的载体,以便将所述治疗分子释放到pH值为酸性的细胞组织或区室中。