Asymmetric synthesis of 1,3-dioxolane-pyrimidine nucleosides and their anti-HIV activity.
作者:Hea O. Kim、Soon K. Ahn、Antonio J. Alves、J. Warren Beach、Lak S. Jeong、Bo G. Choi、Patrick Van Roey、Raymond F. Schinazi、Chung K. Chu
DOI:10.1021/jm00089a007
日期:1992.5
In order to study the structure-activity relationships of dioxolane nucleosides as potential anti-HIV agents, various enantiomerically pure dioxolane-pyrimidine nucleosides have been synthesized and evaluated against HIV-1 in human peripheral blood mononuclear cells. The enantiomerically pure key intermediate 8 has been synthesized in nine steps from 1,6-anhydro-D-mannose (1), which was condensed with
为了研究作为潜在抗HIV剂的二氧戊环核苷的构效关系,已经合成了各种对映体纯的二氧戊环-嘧啶核苷,并在人外周血单核细胞中针对HIV-1进行了评估。对映体纯的关键中间体8已经由1,6-脱水-D-甘露糖(1)以9个步骤合成,将其与5-取代的嘧啶缩合以获得各种二氧戊环-嘧啶核苷。对这些化合物进行评估后,发现胞嘧啶衍生物19尽管毒性最高,但仍显示出最有效的抗HIV药物。抗HIV效力的顺序如下:胞嘧啶(β-异构体)大于胸腺嘧啶大于胞嘧啶(α-异构体)大于5-氯尿嘧啶大于5-溴尿嘧啶大于5-氟尿嘧啶衍生物。尿嘧啶 发现5-甲基胞嘧啶和5-碘尿嘧啶衍生物是无活性的。有趣的是,α-异构体20显示出良好的抗HIV活性而没有细胞毒性。如预期的那样,其他α-异构体没有表现出任何显着的抗病毒活性。(-)-Dioxolane-T对AZT耐药病毒的疗效比对AZT敏感的病毒低5倍。