Design and synthesis of unsymmetric macrocyclic hexaoxazole compounds with an ability to induce distinct G-quadruplex topologies in telomeric DNA
作者:Mai Sakuma、Yue Ma、Yamato Tsushima、Keisuke Iida、Takatsugu Hirokawa、Kazuo Nagasawa
DOI:10.1039/c6ob00437g
日期:——
New macrocyclic hexaoxazole compounds bearing two side chains on an unsymmetrical macrocyclic ring system, i.e., 4,2-L2H2-6OTD (2) and 5,1-L2H2-6OTD (3), were designed as candidate G-quadruplex (G4) ligands and synthesized. These G4 ligands 2 and 3 induced an anti-parallel topology and a hybrid-type topology of telomeric DNA, respectively, in contrast to the previously reported symmetrical macrocycle
新的大环六恶唑化合物在不对称大环系统上带有两个侧链,即4,2-L2H2-6OTD(2)和5,1-L2H2-6OTD(3),被设计为候选G-四链体(G4)配体并合成。与先前报道的对称大环3,3-L2H2-6OTD相比,这些G4配体2和3分别诱导了端粒DNA的反平行拓扑和杂合型拓扑(1),从而产生典型的反平行结构。分子力学计算对接研究表明,这些差异在这些L2H2-6OTD衍生物侧链的不同的方向出现,并提供端粒DNA的由较弱的稳定的解释2和3,比1。