The present invention relates to a production method of a nucleoside compound represented by the formula [II] which includes subjecting a 2',3',5'-triacyloxynucleoside compound represented by the formula [I] to deacylation using alkali metal hydroxide in a 0.01- to 0.5-fold amount in a molar ratio relative to the 2',3',5'-triacyloxynucleoside compound. According to the present invention, a production method of a nucleoside compound of the formula [II] which suppresses a by-product, and a production method of a nucleoside derivative which utilizes this method can be provided. In addition, the present invention relates to oxidation of a nucleoside compound represented by the formula (1) in the presence of a 2,2,6,6-tetramethylpiperidine-1-oxy catalyst, and hypochlorite or hypobromite, while adjusting pH to fall within the range of 5-9, and further, extracting a nucleoside-carboxylic acid compound represented by the formula (2) into an organic solvent under acidic conditions, back-extracting the compound from the organic solvent into an aqueous alkali solution, and neutralizing the aqueous alkali solution by adding an acid thereto to allow precipitation of a crystal. Thus, a highly pure particular nucleoside-carboxylic acid compound or a salt thereof can be produced by a method suitable for industrial production:
 wherein each symbol is as defined in the Description.
                            本发明涉及一种核苷化合物的生产方法,该核苷化合物由式[I]所表示的2',3',5'-三酰氧核苷化合物经过使用在摩尔比为0.01至0.5的碱
金属氢氧化物下的去酰化而制得。根据本发明,可以提供一种抑制副产物的核苷化合物的生产方法和利用该方法的核苷衍
生物的生产方法。此外,本发明涉及在
2,2,6,6-四甲基哌啶-1-氧催化剂和
次氯酸盐或
次溴酸盐的存在下,将式(1)所表示的核苷化合物氧化,同时将pH调节在5-9的范围内,并在酸性条件下将式(2)所表示的核苷-
羧酸化合物提取到有机溶剂中,将化合物从有机溶剂中回萃取到
水性碱溶液中,并通过加入酸来中和
水性碱溶液以沉淀结晶。因此,可以通过适用于工业生产的方法生产高纯度的特定核苷-
羧酸化合物或其盐:其中每个符号如描述中所定义。