(S)-9-(2,3-dihydroxy-1-propoxymethyl)- guanine has potent antiherpetic activity which is superior to the corresponding racemic mixture or the (R)-enantiomer and also is much more potent than 9(2-hydroxyethoxymethyl)guanine. Acyl derivatives (prodrugs) of the (S)-enantiomer, which are more effective than the corresponding (R)-enantiomer analogs or related racemic mixtures provide formulation advantages and even higher plasma half lives in animals or man than the (S)-isomer.
(S)-9-(2,3-二羟基-1-丙氧基甲基)-
鸟嘌呤具有强效抗带状疱疹活性,优于相应的外消旋混合物或(R)-对映体,也比 9(2-羟乙氧基甲基)
鸟嘌呤强效得多。(S)-对映体的酰基衍
生物(原药)比相应的(R)-对映体类似物或相关外消旋混合物更有效,具有配方优势,在动物或人体内的血浆半衰期甚至比(S)-异构体更高。