Compounds of the formula ##STR1## are useful in the treatment of diseases associated with herpes viruses including human cytomegalovirus, herpes simplex viruses, Epstein-Barr virus, varicella-zoster virus, human herpesviruses-6 and -7, and Kaposi herpesvirus.
式为##STR1##的化合物在治疗与疱疹病毒相关的疾病中很有用,包括人类巨细胞病毒、单纯疱疹病毒、EB病毒、
水痘-带状疱疹病毒、人类疱疹病毒-6和-7,以及卡波西氏疱疹病毒。