PRODUCTION OF CYTOSINE NUCLEOSIDES

摘要

24205-659 S OF THE DISCLOSURE A cytosine nucleoside is produced by reacting a peracylcytosine with a hydroxy-protected monosaccharide or a hydroxy-protected nucleoside whose base moiety is other than cytosine and, if necessary, removing the hydroxyprotecting group. The product is useful as drug or intermediate for the production of drug such as cytidine diphosphate choline.