Design and Synthesis of Novel 5-Substituted Acyclic Pyrimidine Nucleosides as Potent and Selective Inhibitors of Hepatitis B Virus
作者:Rakesh Kumar、Mahendra Nath、D. Lorne J. Tyrrell
DOI:10.1021/jm010410d
日期:2002.5.1
followed by treatment of the obtained 5-(1-azido-2-bromoethyl) compounds (3a-c) with t-BuOK, to affect the base-catalyzed elimination of HBr. Thermal decomposition of 9b and 9c at 110 degrees C in dioxane yielded corresponding 5-[2-(1-azirinyl)]uracil analogues (10b,c). The 5-(1-azidovinyl)uracil derivatives 9a-c were found to exhibit potent and selective in vitro anti-HBV activity against duck hepatitis
一类新型的5-取代的无环嘧啶核苷,1-[((2-羟基乙氧基)甲基] -5-(1-叠氮乙烯基)尿嘧啶(9a),1-[(2-羟基-1-(羟甲基)乙氧基)甲基通过区域特异性加成合成了] -5-(1-叠氮乙烯基)尿嘧啶(9b)和1- [4-羟基-3-(羟甲基)-1-丁基] -5-(1-叠氮乙烯基)尿嘧啶(9c)。叠氮化溴与相应的5-乙烯基尿嘧啶(2a-c)的5-乙烯基取代基相连,然后用t-BuOK处理所得的5-(1-叠氮基-2-溴乙基)化合物(3a-c),以影响碱催化的HBr消除。9b和9c在110℃于二恶烷中热分解,得到相应的5- [2-(1-叠氮基)]尿嘧啶类似物(10b,c)。发现5-(1-叠氮基乙烯基)尿嘧啶衍生物9a-c在低浓度下对鸭乙型肝炎病毒(DHBV)感染的原代鸭肝细胞显示出有效且选择性的体外抗HBV活性(EC(50)= 0.01-0.1 microg / mL范围)。活性最强的抗