作者:Anton Granzhan、Heiko Ihmels、Katharina Jäger
DOI:10.1039/b812891j
日期:——
It is demonstrated that even unsubstituted cationic ligands, namely the known diazoniadibenzochrysenes (1a, 1b) and the so far unreported tetraazoniapentaphenopentaphene (2), stabilize quadruplex DNA upon association; the ligand 2 exhibits essentially the same affinity towards the quadruplex as does 5,10,15,20-tetrakis(1-methyl-4-pyridyl)-21H,23H-porphine, however, with a significantly higher selectivity for quadruplex relative to duplex DNA.
研究表明,即使是未取代的阳离子配体,即已知的重氮二苯并秋兰姆(1a、1b)和迄今未报道过的四氮杂并五苯并五噻吩(2),也能在结合后稳定四联 DNA;配体 2 与 5,10,15,20-四(1-甲基-4-吡啶基)-21H,23H-卟吩对四链 DNA 的亲和力基本相同,但对四链 DNA 的选择性明显高于双链 DNA。