申请人:AJINOMOTO CO., INC.
公开号:US20020187942A1
公开(公告)日:2002-12-12
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.
本发明提供了一种高效生产&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系列产品的合成中间体。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苯甲醇反应,以生产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,以生产1-O-苄基-&bgr;-D-核糖呋喃或其光学异构体。