Synthesis of several pyrimidine l-nucleoside analogues as potential antiviral agents
作者:Tai-Shun Lin、Mei-Zhen Luo、Mao-Chin Liu
DOI:10.1016/0040-4020(94)00997-9
日期:1995.1
deblocking of the 5′-protecting groups. In addition, 2′,3′-dideoxy-β-l-5-fluorocytidine (34), a potent anti-HIV and anti-HBV agent, was synthesized by an alternative methodology from 2′,3′-dideoxy-β-l-5-fluorouridine (31) via a 4-triazolylpyrimidinone intermediate. These l-nucleoside analogues were tested in vitro against HIV, HBV, HSV-1, and HSV-2. Among these compounds, 2′,3′-dideoxy-β-l-5-azacytidine (18)
β--1--5-碘-2′-脱氧尿苷(β-1-IUdR,7)和(β-1-BV-ara-U,10)是通过1-阿拉伯糖的多步合成法合成的。2′,3′-二脱氧-β- 1-5-氮胞苷(18),2′,3′-二脱氧-β-1-2-硫胞苷(20)以及它们各自的α-端基异构体,化合物19和21,也通过在CH 2 Cl 2中存在EtAlCl 2的情况下,将(13)与相应的甲硅烷基化的碱直接偶联,然后分离α-和β-异构体以及解封5'-保护基团,合成了α-己内酰胺。另外,2',3'-二脱氧-β-1--5-氟胞苷(34),一种有效的抗HIV和抗HBV药物,是通过另一种方法,通过2',3'-二脱氧-β-1-5-5-氟尿苷(31)经由4-三唑基嘧啶二酮中间体合成的。这些1-核苷类似物在体外针对HIV,HBV,HSV-1和HSV-2进行了测试。在这些化合物中,发现2',3'-二脱氧-β-1-5-氮杂胞苷(18)在体外具有与