Asymmetric Synthesis and Antiviral Activities of <scp>l</scp>-Carbocyclic 2‘,3‘-Didehydro-2‘,3‘-dideoxy and 2‘,3‘-Dideoxy Nucleosides
作者:Peiyuan Wang、Beth Gullen、M. Gary Newton、Yung-Chi Cheng、Reymond F. Schinazi、Chung K. Chu
DOI:10.1021/jm9901327
日期:1999.8.1
syntheses of L-carbocyclic 2',3'-didehydro-2',3'-dideoxy- and 2',3'-dideoxypyrimidine and purine nucleoside analogues were accomplished, and their anti-HIV and anti-HBV activities were evaluated. The key intermediate, (1S, 4R)-1-benzoyloxy-4-(tert-butoxymethyl)cyclopent-2-ene (7), was prepared by benzoylation of the alcohol 2, selective deprotection of the isopropylidene group of 3, followed by thermal elimination
完成了L-碳环2',3'-didehydro-2',3'-二脱氧-氧和2',3'-二脱氧嘧啶和嘌呤核苷类似物的不对称合成,并评估了它们的抗HIV和抗HBV活性。关键中间体(1S,4R)-1-苯甲氧基-4-(叔丁氧基甲基)环戊-2-烯(7)是通过对醇2进行苯甲酰化而制备的,对3的异亚丙基进行选择性脱保护,然后通过环状原酸酯进行热消除或通过环状硫代碳酸酯进行脱氧。还通过从保护的核苷经由环原酸酯进行热消除而合成了目标化合物。发现L-碳环2',3'-didehydro-2',3'-二脱氧腺苷(34)表现出有效的抗HBV活性(EC(50)= 0.9 microM)和中等的抗HIV活性(EC(50 )= 2。