7,8-Disubstituted guanosine nucleoside derivatives are found to be potent immune response enhancing agents in human and animal cells. 7-Substituents are heteroatom-substituted-hydrocarbyl radicals having a length greater than ethyl and less than about decyl. 8-Substituents are .dbd.O, .dbd.S, .dbd.Se and .dbd.NCN. Compositions and methods of use are also disclosed.
7,8-二取代
鸟嘌呤核苷衍
生物被发现在人类和动物细胞中是强效的免疫应答增强剂。7-取代基是具有长度大于乙基且小于十碳的杂原子取代烃基自由基。8-取代基是.dbd.O,.dbd.S,.dbd.Se和.dbd.NCN。此外,还公开了组合物和使用方法。