Synthesis and comparison of physicochemical, transport, and antithrombic properties of a cyclic prodrug and the parent RGD peptidomimetic
作者:Christine R Xu、Henry T He、Xiaoping Song、Teruna J Siahaan
DOI:10.1016/s0040-4020(03)00333-8
日期:2003.4
Cyclic prodrug 1 was derived from RGD peptidomimetic 2 by linking the amino and carboxylic acid groups via an (acyloxy)alkoxy linker. The formation of a cyclic prodrug can transiently alter the physicochemical properties of the RGD peptidomimetic. Cyclic prodrug 1 was synthesized via the key intermediate 8, and the synthesis of this key intermediate was accomplished using two different routes. Cyclic
环状前药1是从RGD拟肽2衍生而来的,其是通过(酰氧基)烷氧基接头将氨基和羧酸基团连接起来的。环状前药的形成可以暂时改变RGD拟肽的理化性质。环状前药1是通过关键中间体8合成的,并且该关键中间体的合成是通过两种不同的途径完成的。与母体RGD拟肽2相比,环状前药1具有更小的流体动力学半径和更高的膜相互作用潜能。环状前药1的细胞膜渗透率是母体拟肽2的两倍。前药到药物的转化可以在分离的猪酯酶以及人血浆中进行。环状前药在pH 4时比在pH 7中更稳定,在pH 10时非常不稳定。环状前药具有抗血栓形成活性,表明它可以在富含血小板的血浆(PRP)中转化为RGD拟肽。