Synthesis of Two Distamycin Analogs and Their Binding Mode to d(CGCAAATTTGCG)2 in the 2:1 Solution Complexes as Determined by Two-Dimensional 1H-NMR
作者:Fabio Animati、Federico M. Arcamone、Maria Rosaria Conte、Patrizia Felicetti、Aldo Galeone、Paolo Lombardi、Luciano Mayol、Luigi G. Paloma、Cristina Rossi
DOI:10.1021/jm00007a011
日期:1995.3
formylamino analogue 3 has been examined by high-resolution 1H-NMR and molecular modeling. Either ligand binds to DNA in one-drug and symmetric two-drug modes at low drug:DNA ratios, while at high ratios only the two-drug complex was observed. In this article, the structure of 2:1 drugs DNA complexes has been studied by NMR and molecular modeling, which indicate that the two analogues bind the DNA in a similar
在旨在合成作为新型药理学试剂的吡咯am羧酰胺DNA结合剂的研究过程中,通过全合成获得了一系列含有不断增加的吡咯单元的双霉素的氨基甲酸酯类似物。已通过高分辨率1H-NMR和分子模型研究了四吡咯氨基甲酰基4与十二聚体d(CGCAAATTTGCG)2与相应甲酰氨基类似物3的相互作用。任一配体在低药物:DNA比率下均以一种药物和对称的两种药物模式与DNA结合,而在高比率下仅观察到两种药物复合物。在本文中,已通过NMR和分子建模研究了2:1药物DNA复合物的结构,这表明两种类似物在5'的小沟中以相似的方式结合DNA。-AATTT地区。在这两种复合物中,两种药物沿着DNA的互补链对称放置,一个分子的吡咯环与另一分子的吡咯环紧密接触。尽管有五个连续的AT碱基对的另一个区域可用,但是没有观察到药物分子在不同结合位点之间滑动的迹象,例如在具有相同十二聚体的双霉素2:1络合物的情况下,因此表明增加了数目N-甲