L-.beta.-(2S,4S)- and L-.alpha.-(2S,4R)-dioxolanyl nucleosides as potential anti-HIV agents: asymmetric synthesis and structure-activity relationships
作者:Hea O. Kim、Raymond F. Schinazi、Kirupathevy Shanmuganathan、Lak S. Jeong、J. Warren Beach、Satyanarayana Nampalli、Deborah L. Cannon、Chung K. Chu
DOI:10.1021/jm00057a001
日期:1993.3
In order to study the structure-activity relationships of L-(2S,4S)- and L-(2S,4R)-dioxolanyl nucleoside as potential anti-HIV agents, various enantiomerically pure L-(2S,4S)- and (2S,4R)-dioxolanylpyrimidine and -purine nucleosides have been synthesized and evaluated against HIV-1 in human peripheral blood mononuclear (PBM) cells. The enantiomerically pure key intermediate 8 has been synthesized in
为了研究L-(2S,4S)-和L-(2S,4R)-二氧戊环核苷作为潜在抗HIV药物的构效关系,各种对映体纯的L-(2S,4S)-和(2S合成了(4R)-二氧戊环基嘧啶和-嘌呤核苷,并对人外周血单核(PBM)细胞中的HIV-1进行了评估。对映体纯的关键中间体8是由1,6-脱水β-L-古洛糖(2)六步合成的,化合物8与5-取代的嘧啶,6-氯嘌呤和2,6-二取代的嘌呤缩合分别获得各种二氧戊环基嘧啶和-嘌呤核苷。在合成的化合物中,发现5-氟胞嘧啶衍生物29尽管具有毒性(IC50 = 10.0 microM),却显示出最有效的抗HIV活性(EC50 = 0.0012 microM)。嘧啶类似物的抗HIV效能的顺序如下:5-氟胞嘧啶(β-异构体)>胞嘧啶(β-异构体)> 5-氟胞嘧啶(α-异构体)> 5-碘胞嘧啶(β-异构体)>胞嘧啶( (α-异构体)> 5-溴胞嘧啶(β-异构体)>胸腺嘧啶(β-异构体)>