Elongated Multiple Electronic Cascade and Cyclization Spacer Systems in Activatible Anticancer Prodrugs for Enhanced Drug Release
作者:Franciscus M. H. de Groot、Walter J. Loos、Ralph Koekkoek、Leon W. A. van Berkom、Guuske F. Busscher、Antoinette E. Seelen、Carsten Albrecht、Peter de Bruijn、Hans W. Scheeren
DOI:10.1021/jo0158884
日期:2001.12.1
connected to paclitaxel via a 2'-carbamate linkage. Prodrugs in which the novel spacer systems were incorporated between a specific tripeptide specifier and the parent drug doxorubicin or paclitaxel proved to be significantly faster activated by plasmin in comparison with prodrugs containing conventional spacer systems. It is expected that the generally applicable novel spacer systems reported herein will
描述和设计了几种新颖的用于前药的自消除间隔基系统。这些细长的间隔物系统可以结合在可裂解的指定分子和母体药物之间。合成了含萘和联苯的间隔基,但没有消除。据报道,抗癌药阿霉素和紫杉醇的前药含有两个或三个电子级联间隔基。发现HOBt的一种新型催化应用,用于使碳酸4-硝基苯基酯与苯胺衍生物反应,通过氨基甲酸酯键连接1,6-消除间隔基,从而合成N-芳基氨基甲酸酯。另外,合成了含有双间隔基的紫杉醇前药,其包含1,6-消除间隔基和经由2'-氨基甲酸酯键连接至紫杉醇的双胺连接基。与含有常规间隔物系统的前药相比,在特定的三肽指定剂与母体药物阿霉素或紫杉醇之间掺入了新型间隔物系统的前药被证明可以显着更快地被纤溶酶激活。预期本文报道的普遍适用的新型间隔物系统将有助于改进的酶活化前药的未来开发。