Synthesis of 8-amino-substituted 1-alkyl-3-methyl-7-(thietanyl-3)xanthines
8-Amino-substituted 1-alkyl-3-methyl-7 (thietanyl-3)-xanthines were synthesized by reaction of nucleopfilic replacements 1-alkyl-8-bromo-3-methyl-7-(thietanyl-3)xanthines with primary and secondary amines.