A compound represented by a formula [1D] as shown below (wherein R1A, R1B, R2A, R2B, R3A and R3B represent a hydrogen atom, an optionally substituted C1-6 alkyl group, and the like) is useful as an intermediate for producing a thionucleoside, and the production method of the present invention is useful as a method for producing a thionucleoside.
由下式[1D]表示的化合物(其中 R1A、R1B、R2A、R2B、R3A 和 R3B 代表氢原子、任选取代的 C1-6 烷基等)可用作生产
硫代核苷的中间体,本发明的生产方法可用作生产
硫代核苷的方法。