NOVEL 6-AMINOPYRIMIDIN-4-THIONE DERIVATIVES AND PROCESS FOR PREPARING THEM

摘要

This invention relates to 6-amino pyrimidine-4-thione deirvative represented by the general formula (I) wherein R1 is C1-C4 alkyl and R2 is hydrogen or C1-C4 alkyl. This compound is synthesized by reacting compound(III) with an alkylating agent and substituting intermediate compound(II) with M-SH (M: Li, Na, K). This compound is useful as an intermediate of cephalosporin antibiotics.