A method of preparing 2-deoxy-L-ribose represented by the following formula I is disclosed. The preparation method includes the steps of: treating L-arabinose with an alcohol solvent in the presence of an acid to prepare 1-alkoxy-L-arabinopyranose; allowing the prepared 1-alkoxy-L-arabinopyranose to react with acyl chloride so as to prepare 1-alkoxy-2,3,4-triacyl-L-arabinopyranose; brominating the alkoxy group of the prepared 1-alkoxy-2,3,4-triacyl-L-arabinopyranose to prepare a 1-bromo-2,3,4-triacyl compound; allowing the prepared compound to react with zinc in the presence of ethyl acetate and an organic base so as to prepare glycal; treating the glycal with an alcohol solvent in the presence of an acid to prepare 1-alkoxy-2-deoxy-3,4-diacyl-L-ribopyranose; treating the prepared 1-alkoxy-2-deoxy-3,4-diacyl-L-ribopyranose with a base to prepare 1-alkoxy-2-deoxy-L-ribopyranose; and hydrolyzing the prepared 1-alkoxy-2-deoxy-L-ribopyranose in the presence of an acid catalyst.
公开了一种制备由以下式I表示的
2-脱氧-L-核糖的方法。制备方法包括以下步骤:在酸的存在下用醇溶剂处理
L-阿拉伯糖以制备1-烷氧基-L-阿拉伯
吡喃糖;使制备的1-烷氧基-L-阿拉伯
吡喃糖与酰
氯发生反应,以制备1-烷氧基-2,3,4-三酰基-L-阿拉伯
吡喃糖;
溴化所制备的1-烷氧基-2,3,4-三酰基-L-阿拉伯
吡喃糖的烷氧基,以制备1-
溴基-2,3,4-三酰基化合物;使制备的化合物在
乙酸乙酯和有机碱的存在下与
锌发生反应,以制备半
乳糖;在酸的存在下用醇溶剂处理半
乳糖,以制备1-烷氧基-2-脱氧-3,4-二酰基-
L-核糖吡喃糖;用碱处理制备的1-烷氧基-2-脱氧-3,4-二酰基-
L-核糖吡喃糖,以制备1-烷氧基-
2-脱氧-L-核糖吡喃糖;在酸催化剂的存在下
水解制备的1-烷氧基-
2-脱氧-L-核糖吡喃糖。