Synthesis and structure–activity relationships of dehydroaltenusin derivatives as selective DNA polymerase α inhibitors
作者:Kouji Kuramochi、Keishi Fukudome、Isoko Kuriyama、Toshifumi Takeuchi、Yoshihiro Sato、Shinji Kamisuki、Kazunori Tsubaki、Fumio Sugawara、Hiromi Yoshida、Yoshiyuki Mizushina
DOI:10.1016/j.bmc.2009.08.051
日期:2009.10
Herein, we describe the synthesis and structure–activity relationships of dehydroaltenusin derivatives as inhibitors of a mammalian DNA polymerase α. We have newly synthesized nine dehydroaltenusin derivatives modified at the side chains or benzoquinone moiety. We also achieved the first synthesis of desmethylaltenusin and desmethyldehydroaltenusin, metabolites of Alternaria sp. or Talaromyces flavus
在这里,我们描述了脱氢altenusin衍生物作为哺乳动物DNA聚合酶α的抑制剂的合成和构效关系。我们新合成了在侧链或苯醌部分上修饰的九种脱氢altenusin衍生物。我们还实现了脱甲基altenusin和脱甲基altenusin的新合成,这是链格孢菌的代谢产物。或Talaromyces flavus。在所有合成的衍生物中,脱甲氧基脱氢altenusin是DNA聚合酶α的最具选择性的抑制剂。该Ø羟基p-苯醌(2-羟基环己-2,5-二烯酮)部分对于抑制DNA聚合酶至关重要。脱氢altenusin的5位取代对抑制效能很重要。因为脱氢altenusin与N-乙酰半胱氨酸甲酯在邻-羟基-对苯醌醌部分缀合,所以DNA聚合酶α的一个或多个半胱氨酸残基可以充当该化合物的靶标。