The present invention is concerned with a process for the preparation of antiviral 1,3-oxathiolane nucleosides comprising an intramolecular glycosylation reaction to produce exclusively the .beta.-diastereomer, and intermediates useful in the process.
本发明涉及一种制备抗病毒1,3-
噁唑硫烷核苷的过程,包括一种分子内糖基化反应,以纯产生β-对映体,并且还提供了在该过程中有用的中间体。