Facile synthesis of a dimeric dipyrrole–polyamide and synergetic DNA-cleaving activity of its Cu(II) complex
作者:Chun-Qiong Zhou、Yan-Ling Lin、Jin-Xiang Chen、Lu-Sheng Wang、Na-Na Yang、Wei Zeng、Wen-Hua Chen
DOI:10.1016/j.bmcl.2012.07.085
日期:2012.9
Inspired by the potent DNA-cleaving activity of the Cu(II) complex of monopyrrole–polyamide dimer 1 (i.e., 1@Cu2+), we designed a new dimeric dipyrrole–polyamide analog 2 with the aim to optimize the catalytic activities of the metal complexes of this type of polypyrrole–polyamides. Compound 2 was prepared in 50% yield from the reaction of 1-methyl-4-[(1-methyl-4-nitro-1H-pyrrole-2-carbonyl)-amino
受到单吡咯-聚酰胺二聚体1(即1 @Cu 2+)的Cu(II)络合物有效的DNA裂解活性的启发,我们设计了一种新的二聚二吡咯-聚酰胺类似物2,目的是优化二吡咯-聚酰胺二聚体2的催化活性。这种聚吡咯-聚酰胺的金属配合物。由1-甲基-4-[(1-甲基-4-硝基-1 H-吡咯-2-羰基)-氨基] -1 H-吡咯-2-羧酸的反应以50%的产率制备化合物2用2,2'-(乙烷-1,2-二基双(氧基)二乙胺),并在NMR(1 H和13C),MS(ESI和HR)和IR。分光光度滴定,ESI-MS和电导率测量表明,化合物2与Cu 2+离子(即2 @Cu 2+)形成1:1的络合物。琼脂糖凝胶电泳研究表明,2 @Cu 2+能够在生理条件下,最有可能通过氧化机制有效地将pBR322 DNA转化为开放的圆形和线性形式。据估计,其总体催化活性比1 @ Cu 2+高出至少30倍。。这些Cu(II)络合物的裂解活性恰好平