10-dione (1), a previously reported G4 ligand. After calculating the optimal interaction parameters 1 with the target, two series of tri-armed ligands based on furan- or thiophene-fused anthraquinone scaffolds were designed and synthesized. The new compounds bearing an additional side chain at the 2-position of the heterocycle and the 4,11-side chains with different spacer lengths and structures of terminal
在这里,使用组合的分子建模方法来确定以前报道的4,11-双((2-
胍基乙基)
氨基)
蒽[2,3 - b ]
噻吩-5,10-二酮(1)的结合模式G4
配体。计算最佳交互参数后1以目标为基础,设计并合成了基于
呋喃或
噻吩融合的
蒽醌支架的两个三臂
配体系列。新化合物在杂环的2位带有附加的侧链和具有不同间隔区长度和末端基团结构的4,11侧链,与亲本
配体相比,对端粒G4的亲和力更强(4–15倍) 。此外,当将3-
胍基丙基侧链引入杂环的2-位时,对双链体DNA的四链体的特异性得到了显着提高(高达75倍)。所有三臂
配体均表现出适度的抗增殖能力,这很可能是由于细胞内渗透率低所致。尽管如此,