A Mild and Efficient Copper-Mediated N-Arylation of 6-Azauracil with Corresponding Boronic Acids and their Antibacterial Activity
作者:Kali Charan Gulipalli、Srinu Bodige、Parameshwar Ravula、R. Sekhar Bolla、Srinivas Endoori、Purna Koteswara Rao Cherukumalli、Nareshvarma Seelam
DOI:10.14233/ajchem.2018.21491
日期:——
A convenient synthetic strategy is reported for the synthesis of N-arylated 6-azauracil through Chan-Lam cross-coupling. A variety of N-arylated 6-azauracil derivatives were synthesized in moderate to good yields by cross-coupling of 6-azauracil with arylboronic acids in the presence of Cu(OAc)2 and pyridine. However the arylation position is confirmed in the case of 2-(3,5-dichlorophenyl)-1,2,4-triazine- 3,5(2H,4H)-dione (3a), by preparing the compound in a traditional method and compared the chemical shift of the NH proton at N-3 position. Further, the synthesized compounds were screened for their antibacterial activity using agar well diffusion method. The results revealed that most of the synthesized moieties possessing promising therapeutic nature.
报道了一种通过 Chan-Lam 交叉偶联合成 N-芳基化 6-氮尿嘧啶的便捷合成策略。在 Cu(OAc)2 和吡啶存在下,通过 6-氮杂尿嘧啶与芳基硼酸交叉偶联,合成了多种 N-芳基化 6-氮杂尿嘧啶衍生物,产率中等至良好。然而,在 2-(3,5-二氯苯基)-1,2,4-三嗪-3,5(2H,4H)-二酮 (3a) 的情况下,通过以传统方法制备化合物来确定芳基化位置并比较了 N-3 位 NH 质子的化学位移。此外,使用琼脂井扩散法筛选合成的化合物的抗菌活性。结果表明,大多数合成的部分具有有希望的治疗性质。