<i>O</i><sup>6</sup>-(Alkyl/aralkyl)guanosine and 2‘-Deoxyguanosine Derivatives: Synthesis and Ability To Enhance Chloroethylnitrosourea Antitumor Action
作者:Emmanuelle Mounetou、Eric Debiton、Catherine Buchdahl、Daniel Gardette、Jean-Claude Gramain、Jean-Claude Maurizis、Annie Veyre、Jean-Claude Madelmont
DOI:10.1021/jm960881d
日期:1997.8.1
A series of O6-(alkyl/aralkyl)guanosines and 2'-deoxyguanosine analogs extended to peracetyl and N2-acetyl derivatives, potentially water soluble, was synthesized. Each was associated with N'-(2-chloroethyl)-N-[2-(methylsulfonyl)ethyl]-N'-nitrosourea for in vitro evaluation on M4Beu melanoma cells of their ability to enhance the cytotoxic effect of this chloroethylnitrosourea, which is frequently reduced
合成了一系列O6-(烷基/芳烷基)鸟苷和2'-脱氧鸟苷类似物,它们扩展到可能具有水溶性的全乙酰基和N2-乙酰基衍生物。每个都与N'-(2-氯乙基)-N- [2-(甲基磺酰基)乙基] -N'-亚硝基脲相关,以体外评估M4Beu黑色素瘤细胞增强该氯代乙基亚硝基脲的细胞毒性作用的能力。通常通过O6-烷基鸟嘌呤-DNA-烷基转移酶进行的修复而减少。结构活性分析表明,(i)苄基和4-卤代苄基是提供显着活性所需的O6-取代基,(ii)2'-脱氧鸟苷衍生物比鸟苷类似物具有更高的效力,(iii)乙酰化,尤其是在N2上位置,通常会产生具有中等能力的化合物,但可能会阻止此类核苷掺入DNA。因此,O6-(4-碘苄基)-N2-乙酰鸟苷(3b)和O6-苄基过乙酰基-2'-脱氧鸟苷(2a)以及O6-苄基-N2-乙酰鸟苷(1b)和O6-苄基-N2-乙酰基到目前为止,水溶性最高的-2'-脱氧鸟苷(2b)具有良好的特性,可用于通过静脉途径进行的进一步体内试验。