Synthesis, Structure−Activity Relationships, and Drug Resistance of β-<scp>d</scp>-3‘-Fluoro-2‘,3‘-Unsaturated Nucleosides as Anti-HIV Agents
作者:Wen Zhou、Giuseppe Gumina、Youhoon Chong、Jianing Wang、Raymond F. Schinazi、Chung K. Chu
DOI:10.1021/jm040027j
日期:2004.6.1
3-difluoropentofuranosyl acetate 7 by the ring-closure reaction under acidic conditions. The acetate 7 was condensed with silylated purine and pyrimidine bases, which produced the alpha and beta isomers. The 3',3'-difluoro nucleosides were then treated with t-BuOK to give the desired 3'-fluoro-unsaturated nucleosides. We studied the structure-activity relationships of d-3'-fluoro-2',3'-unsaturated nucleosides against
我们最近的研究表明,d-和l-2'-氟-2',3'-不饱和核苷(d-和l-2'-F-d4Ns)显示出对HIV-1和HBV的中度至强效抗病毒活性。作为这些发现的延伸,合成了β-d-3'-氟-2',3'-不饱和核苷作为潜在的抗病毒剂。关键中间体(2S)-5-(1,3-二氧戊环)-1-苯甲酰氧基-3,3-二氟戊烷-2-醇6由2,3-O-异亚丙基-d-甘油醛1制备在酸性条件下通过闭环反应生成5-O-苯并-d-2-脱氧-3,3-二氟戊呋喃糖基乙酸酯7。乙酸盐7与甲硅烷基化的嘌呤和嘧啶碱缩合,产生α和β异构体。然后将3′,3′-二氟核苷用t-BuOK处理,得到所需的3′-氟不饱和核苷。我们研究了人类外周血单核细胞中d-3'-氟-2',3'-不饱和核苷与HIV-1的构效关系,从中我们发现胞嘧啶衍生物26在合成的最有效的细胞中化合物。为了了解作用方式和药物耐药性,特别是氟的作用,我们对胞苷类似物d-3'F