New purine compounds having the formula: ##STR1## Y and Y'=H, ##STR2## X=H, alkyl, halo; ##STR3## A=O, S, NH.sub.2 are provided. These compounds are useful in treating patients having cancer, since they are potent and selective inhibitors of replicative DNA synthesis in mammalian cells since they inhibit DNA polymerase .alpha.. New purine compounds also are provided having the formula: ##STR4## wherein Y, A, Z are as defined above, X'=C.sub.2 H.sub.5 Y"=--CH.sub.3 or ##STR5## These compounds are useful to prevent bacterial growth since they are potent inhibitors of DNA polymerase III. New Purine compounds also are provided having the formula: ##STR6## wherein Z' is H, OH or CH.sub.2 OH, A' is O of CH.sub.2 X"=H, alkyl, halo E=n-butyl, alkyl, halo, H G= ##STR7##
提供具有以下公式的新
嘌呤化合物:##STR1##其中Y和Y'=H,##STR2##X=H,烷基,卤素;##STR3##A=O,S,NH.sub.2。这些化合物在治疗患有癌症的患者方面非常有用,因为它们是哺乳动物细胞中复制DNA合成的有效和选择性
抑制剂,因为它们抑制
DNA聚合酶.alpha.。还提供了具有以下公式的新
嘌呤化合物:##STR4##其中Y,A,Z如上所定义,X'=C.sub.2 H.sub.5 Y"=--CH.sub.3或##STR5##这些化合物对于预防细菌生长非常有用,因为它们是
DNA聚合酶III的有效
抑制剂。还提供了具有以下公式的新
嘌呤化合物:##STR6##其中Z'为H,OH或CH.sub.2 OH,A'为O或CH.sub.2 X"=H,烷基,卤素E=n-丁基,烷基,卤素,H G=##STR7##