Synthesis and binding studies of novel di-substituted phenanthroline compounds with genomic promoter and human telomeric DNA G-quadruplexes
作者:Chunying Wei、Yanbo Wang、Meiying Zhang
DOI:10.1039/c3ob27426h
日期:——
Six novel di-substituted phenanthroline derivatives 5a–7a and 3b–5b have been prepared, and their binding interactions with human telomeric (h-telo) and promoter (c-kit2 and c-myc) G-quadruplex DNAs were investigated. All the compounds are potent stabilisers of the G-quadruplex structures and compounds 3b, 4b, and 5b exhibit high G-quadruplex DNA selectivity over duplex DNA. The binding affinities
已经制备了六个新颖的二取代菲咯啉衍生物5a-7a和3b-5b,并研究了它们与人端粒(h -telo)和启动子(c- kit2和c -myc)G-四链体DNA的结合相互作用。所有化合物都是G-四链体结构的有效稳定剂,并且化合物3b,4b和5b相对于双链体DNA表现出高的G-四链体DNA选择性。这些化合物对G-四链体DNA的结合亲和力高于对双链体DNA的结合亲和力。CD光谱表明该化合物可以诱导h -telo G-四链体的反平行结构的形成。每h-telo四重体通过末端堆积模式结合两个化合物分子。六种新化合物能够在低μM浓度下显着抑制端粒酶活性。