The preparation of (.+-.)-9-[.alpha.-(2.alpha.,3.beta.-dihydroxy-4.alpha.-(hydroxymethyl) cyclopentyl)]-6-substituted purines: ##STR1## and (.+-.)-3-[.alpha.-(2.alpha., 3.beta.-dihydroxy-4.alpha.-(hydroxymethyl)cyclopentyl)]-7-substituted-v-tr iazolo[4,5d]pyrimidines: ##STR2## and their derivatives wherein R is amino, mercapto, methylmercapto, hydroxy, halogen, or substituted amino: ##STR3## wherein R' and R" may be the same or different and are of hydrogen, methyl, ethyl, propyl or phenyl. The preparation of the single intermediate from which either of these series of compounds may be synthesized is also disclosed. The compounds exhibit antiviral and antitumor activity.
(.+-.)-9-[.alpha.-(2.alpha.,3.beta.-二羟基-4.alpha.-(羟甲基)环戊基)]-6-取代
嘌呤的制备:和(.+-.)-3-[.alpha.-(2.alpha.,3.beta.-二羟基-4.alpha.-(羟甲基)环戊基)]-7-取代-v-三唑并
嘧啶的制备:以及它们的衍
生物,其中R为
氨基、巯基、甲
硫基、羟基、卤素或取代
氨基:其中R'和R"可能相同也可能不同,为氢、甲基、乙基、丙基或苯基。还公开了从中可合成这些化合物系列之一的单个中间体的制备方法。这些化合物具有抗病毒和抗肿瘤活性。