申请人:The of the United States of America as represented by the Department of
公开号:US05352669A1
公开(公告)日:1994-10-04
O.sup.6 -Benzylated guanine guanosine and 2'-deoxyguanosine compounds of the formula ##STR1## wherein Z is hydrogen, ##STR2## and R is a benzyl group or a substituted benzyl group, cause a depletion of O.sup.6 -alkylguanine-DNA alkyltransferase (AGT) activity in mammalian cells. These compounds may be administered to a host so as to reduce AGT levels in tumor cells of the host in order to increase host responsiveness to anti-neoplastic alkylating agents, including chloroethylating agents, such as chloroethylnitrosoureas, for chemotherapeutic treatment of a number of neoplasms.
O.sup.6-苄基化鸟嘌呤鸟苷和2'-脱氧鸟嘌呤鸟苷化合物的化学式为 ##STR1## 其中Z为氢, ##STR2## 而R为苄基或取代苄基,这些化合物会导致哺乳动物细胞中O.sup.6-烷基鸟嘌呤-DNA烷基转移酶(AGT)活性的耗竭。这些化合物可以被用于治疗多种肿瘤,通过将其注入到宿主体内以减少宿主体内肿瘤细胞中AGT的水平,从而增加宿主体对抗肿瘤烷基化剂的反应性,包括氯乙基化剂,如氯乙基亚硝酰脲。