申请人:Ajinomoto Co., Inc.
公开号:US06800742B2
公开(公告)日:2004-10-05
The present invention provides a method for efficiently producing &bgr;-D-ribofuranose derivatives or optical isomers thereof, useful as synthetic intermediates of pharmaceutical nucleic acid-series products. The method comprises a step of producing 1-O-benzyl-&bgr;-D-ribofuranose-2,3,5-triacetate or an optical isomer thereof by allowing &bgr;-D-ribofuranose-1,2,3,5-tetraacetate or an optical isomer thereof to react with a benzyl alcohol in the presence of acid catalysts and a step of hydrolyzing the resulting 1-O-benzyl-&bgr;-D-ribofuranose-2,3,5-triacetate in the presence of a base to produce 1-O-benzyl-&bgr;-D-ribofuranose or an optical isomer thereof.
本发明提供了一种有效生产&bgr;-D-核糖呋喃衍生物或其光学异构体的方法,该方法可用作制药核酸类产品的合成中间体。该方法包括以下步骤:在酸催化剂的存在下,使&bgr;-D-核糖呋喃-1,2,3,5-四乙酸酯或其光学异构体与苄醇反应,生成1-O-苄基-&bgr;-D-核糖呋喃-2,3,5-三乙酸酯或其光学异构体;在碱的存在下,水解所得的1-O-苄基-&bgr;-D-核糖呋喃-2,3,5-三乙酸酯,生成1-O-苄基-&bgr;-D-核糖呋喃或其光学异构体。