Synthesis of Potentially Antiviral 2′,3′-Dideoxy-2′-fluoro-3′-(hydroxyamino)nucleosides
作者:Songqing Wang、Junbiao Chang、Shifeng Pan、Kang Zhao
DOI:10.1002/hlca.200490030
日期:2004.2
A series of novel 3′-(alkyl(hydroxy)amino)-2′-fluoronucleoside analogs were prepared via conjugate addition of N-methylhydroxylamine to various 2-fluorobutenolides. The adducts 13a and 16 were obtained as single isomers under absolute control of stereochemistry. The crucial N-demethylation of 23–25 was readily achieved by means of DDQ oxidation, followed by nitrone/oxime exchange reaction. By this
通过将N-甲基羟胺共轭加成到各种2-氟丁烯内酯中,制备了一系列新颖的3'-((烷基(羟基)氨基)-2'-氟核苷类似物。在立体化学的绝对控制下,以单一异构体形式获得加合物13a和16。关键Ñ的-demethylation 23 - 25被容易地通过DDQ氧化的手段,接着硝酮/肟交换反应来实现。通过该程序,可以在核苷类似物的3'-N-原子处有效引入各种烷基,其中一些可能显示出潜在的令人感兴趣的抗HIV特性。