mono-cyclen derivative B with urea and amino acid urea C were synthesized as DNAcleavage agents. The structures of these new compounds were identified by MS and 1H NMR spectroscopy. The catalytic activities on DNAcleavage of these compounds were subsequently studied, and results show that A is a much better catalyst in DNAcleavage process than that of B and C. The effects of reaction time and catalyst
合成了具有尿素的新型双环素衍生物A,具有尿素的单环素衍生物B和氨基酸尿素C作为DNA裂解剂。这些新化合物的结构通过MS和1 H NMR光谱鉴定。随后研究了这些化合物对DNA裂解的催化活性,结果表明A在DNA裂解过程中比B和C更好。还研究了反应时间和催化剂浓度的影响。结果表明A 可以通过水解机制在生理条件下以高收率(接近100%)催化超螺旋DNA(pUC 19质粒DNA)裂解为带切口的DNA。
Selenium-Catalyzed Synthesis of Urea Derivatives from Amino Acid Esters, Carbon Monoxide, and Oxygen