Synthesis and DNA Cleavage Activity of Artificial Receptor 1,4,7-Triazacyclononane Containing Guanidinoethyl and Hydroxyethyl Side Arms
作者:Xin Sheng、Xiao-Min Lu、Jing-Jing Zhang、Yue-Ting Chen、Guo-Yuan Lu、Ying Shao、Fang Liu、Qiang Xu
DOI:10.1021/jo0624041
日期:2007.3.1
was synthesized. DNA cleavage efficiency of 1 exhibits remarkable increases compared with its ZnII complex and corresponding nonguanidinium compound N-(2-hydroxyethyl)-1,4,7-triazacyclononane and parent 1,4,7-triazacyclononane. Kinetic data of DNA cleavage promoted by 1 fit to a Michaelis−Menten-type equation with kmax of 0.160 h-1 giving 107-fold rate acceleration over uncatalyzed DNA. The acceleration
合成了新型的磷酸二酯受体1-(2-胍基乙基)-4-(2-羟乙基)-1,4,7-三氮杂环壬烷盐酸盐1。的DNA裂解效率1周表现出显着的增加,其锌相比II复杂和对应nonguanidinium化合物ñ - (2-羟乙基)-1,4,7-三氮杂环和母体1,4,7-氮杂环壬烷。1拟合的Michaelis-Menten型方程的k最大值为0.160 h -1的1拟合促进了DNA裂解的动力学数据,得到10 7速度比未催化的DNA快。加速是由亲核羟基的空间接近性和胍基对磷酸二酯的亲电子活化驱动的。