Pyrimidinthiones (Part I): Utility of 2-Thioxopyrimidin-6-(1H)ones as Ring Transformer in the Synthesis of Fused Bi- and Tri-Cyclic Heterocyclic Compounds and Their Potential Biological Activities
作者:M. A. I. Salem、H. M. F. Madkour、M. I. Marzouk、M. E. Azab、N. F. H. Mahmoud
DOI:10.1080/10426500801967963
日期:2008.9.15
nucleophile have been investigated to give 4, treatment of 4 with CS2 and sodium nitrite in the presence of acetic acid (0°C) produced 1,2,4-triazolopyrimidin-5(1H)one derivatives (5)and tetrazolo[1,5-a]pyrimidin-5(1H)ones (6), respectively. Also cyclization of 7 and 9 gave [1,3]thiazolo[3,2-a]pyrimidin-5(1H)one and [1,3]thiazolo[3,2-a]pyrimidin-3,5-dione derivatives 8 and 10 respectively, treatment of 10
嘧啶硫酮具有广泛的生物和药物活性,近年来引起了相当大的兴趣,特别是作为抗病毒抑制乙型肝炎病毒 (HBV) 的产生和体外胰岛素模拟物。从 50% 抑制浓度评估的嘧啶酮衍生物复合物的活性促使我们研究 2-thioxopyrimidin-6(1H) 向具有嘧啶部分的稠合双环和三环杂环化合物的转化并筛选其生物活性。研究了 2-mercapto-4-aryl-5-cyanopyrimidin-6(1H)ones (1) 对不同单和双功能卤代有机化合物的烷基化反应,得到 S-单烷基化产物 2、7 和 9;S-和 N-二烷基化产物 3、13 和 14。已经研究了用水合肼作为氮亲核试剂处理 1 和/或 2 得到 4,在乙酸存在下(0°C)用 CS2 和亚硝酸钠处理 4 产生 1,2,4-triazolopyrimidin-5 (1H)one 衍生物 (5) 和四唑并[1,5-a]嘧啶-5(1H)ones (6)