Certain open chain purine nucleoside phosphonate derivatives have antiviral activity against the Herpes group of viruses, and also show effective antiviral activity against retroviruses, including human immunodeficiency virus (HIV). These compounds have the formula ##STR1## wherein B represents a substituted or unsubstituted purine base, especially adenine or guanine and their halogenated derivatives. R1 is selected from H, methyl, hydroxymethyl, halomethyl, azidomethyl, and cyano; R2 is selected from H, methyl, hydroxymethyl, halomethyl, azidomethyl, cyano, and OH; also when R2 is OH the carbon to which it is attached may be oxidized so that the H there shown and R2 together may be =0; and n is an integer of 0-5. The compounds of the invention further include the pharmaceutically acceptable mono and dibasic salts and the mono- and diesters of the phosphonate moiety and the acid addition salts of the murine-substituted purines. In addition, when R1 or R2 is --CH.sub.2 OH, or when R2 is OH, the acyl (1-6C) esters of these alcohols are included in the invention. Further, when n is 0, 1, or 2 and R1 is CH.sub.2 OH, the compounds of Formula 1 include the cyclic forms wherein formal dehydration between R1 and one of the --OH groups on the phosphonate results in compounds of the formula: ##STR2## and their corresponding salts and esters.
某些开链
嘌呤核苷
膦酸酯衍
生物对疱疹病毒群具有抗病毒活性,并且对逆转录病毒,包括人类免疫缺陷病毒(HIV)也显示出有效的抗病毒活性。这些化合物的
化学式为##STR1## 其中B代表取代或未取代的
嘌呤碱基,特别是
腺嘌呤或
鸟嘌呤及其卤代衍
生物。R1从H、甲基、羟甲基、卤甲基、
叠氮甲基和
氰中选择;R2从H、甲基、羟甲基、卤甲基、
叠氮甲基、
氰和OH中选择;当R2为OH时,其附着的碳原子可能被氧化,使得所示的H和R2一起可能为=0;n为0-5的整数。该发明的化合物还包括药学上可接受的
膦酸酯基的
单质和二元盐以及鼠
嘌呤取代物的酸加成盐。此外,当R1或R2为--CH.sub.2 OH,或当R2为OH时,这些醇的酰基(1-6C)酯也包括在该发明中。此外,当n为0、1或2且R1为CH.sub.2 OH时,化合物的
化学式1包括环式,其中R1和
膦酸酯上的一个--OH基团之间的形式脱
水导致化合物的
化学式:##STR2## 及其相应的盐和酯。