申请人:Ravikumar Vasulinga
公开号:US20080234475A1
公开(公告)日:2008-09-25
The present invention provides an improved process for the synthesis of 2′-O-substituted purine nucleosides. The process includes anhydro or thioanhydro ring opening of a selected 8,2′-cyclopurine nucleoside with a weak nucleophile in the presence of a Lewis acid ester, followed by reduction to afford the desired 2′-O-substituted purine nucleoside.
本发明提供了一种改进的合成2'-O-取代嘌呤核苷的方法。该方法包括在路易斯酸酯的存在下,使用弱亲核试剂进行选择性的8,2'-环戊嘧啶核苷的无水或硫醇无水环开启,然后还原以得到所需的2'-O-取代嘌呤核苷。