Process for isolating the antiviral agent [1S-(1alpha, 3alpha, 4beta)]-2-amino-1,9-dihydro-9-[4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one
申请人:Bristol-Myers Squibb Company
公开号:EP2433941A1
公开(公告)日:2012-03-28
The invention refers to a method for isolating entecavir or an entecavir intermediate from a diluted mixture, the diluted mixture comprising entecavir and water or a mixture comprising an entecavir intermediate and other process reagents comprising:
(a) adsorbing the diluted mixture onto a hydrophobic resin bed;
(b) washing the resin bed with water to remove salt; and
(c) eluting the entecavir or entecavir intermediate from the resin bed with an organic solvent.
本发明涉及一种从稀释混合物中分离恩替卡韦或恩替卡韦中间体的方法,稀释混合物包括恩替卡韦和水或由恩替卡韦中间体和其他工艺试剂组成的混合物,该方法包括:
(a) 将稀释混合物吸附在疏水性树脂床上;
(b) 用水洗树脂床以除去盐分;以及
(c) 用有机溶剂洗脱树脂床中的恩替卡韦或恩替卡韦中间体。