Synthesis, DNA binding and photocleavage study of novel anthracene-appended macrocyclic polyamines
作者:Yu Huang、Yu Zhang、Ji Zhang、Da-Wei Zhang、Qiao-Sen Lu、Jun-Liang Liu、Shan-Yong Chen、Hong-Hui Lin、Xiao-Qi Yu
DOI:10.1039/b823416g
日期:——
Through the fluorescence titration data, compound 1 shows distinct CG-selective DNA binding activity. DNA melting and viscometric titration experiments indicate that the binding mode of 2 is a multiple binding mode that involves groove binding and partial intercalation. Compound 2 also shows excellent DNA photocleavage ability, which is much more efficient than the mono-anthryl compound 1.
两个蒽衍生物附加在cyclen(1,4,7,10-四氮杂环十二烷)部分被合成和表征。在这些新化合物中,蒽基被用作经典PNA骨架的核碱基的替代物,而cycln部分则附加在末端氨基上。通过吸收,荧光和粘度滴定,DNA熔解和凝胶电泳实验系统地研究了化合物与DNA的相互作用。根据吸收滴定数据,双蒽化合物2可以与CT DNA结合ķ b= 1.21×10 5 M -1,比其大121倍单蒽基化合物1(ķ b= 1.00×10 3 M -1)。通过荧光滴定数据,化合物1显示出独特的CG选择性DNA结合活性。DNA熔解和粘度滴定实验表明2的结合模式是涉及凹槽结合和部分嵌入的多重结合模式。化合物2还显示出出色的DNA光裂解能力,这比单蒽化合物1更有效。