The present invention provides a process for making stereochemically pure dioxolane nucleoside analogues. The process includes the use of hydrolytic enzymes for separating β and α anomers from an anomeric mixture represented by formula (A) or formula (B) wherein W is benzyl or benzoyl; R1 is selected from the group consisting of C1-6 alkyl and C6-15 aryl.
本发明提供了一种制备立体
化学纯的二氧兰
嘧啶核苷类似物的方法。该方法包括使用
水解酶从由式(A)或式(B)表示的异构混合物中分离β和α异构体,其中W为苯甲基或苯甲酰基;R1选自由C1-6烷基和C6-15芳基组成的群。