Novobiocin: Redesigning a DNA Gyrase Inhibitor for Selective Inhibition of Hsp90
作者:Joseph A. Burlison、Len Neckers、Andrew B. Smith、Anthony Maxwell、Brian S. J. Blagg
DOI:10.1021/ja065793p
日期:2006.12.1
binding site, a library of novobiocin analogues was prepared and initial structure-activity relationships revealed. These data suggested that the 4-hydroxy moiety of the coumarin ring and the 3'-carbamate of the noviose appendage were detrimental to Hsp90 inhibitory activity. In an effort to confirm these findings, 4-deshydroxy novobiocin (DHN1) and 3'-descarbamoyl-4-deshydroxynovobiocin (DHN2) were prepared
Novobiocin 是香豆霉素抗生素家族的成员,是一种成熟的 DNA 促旋酶抑制剂。最近的研究表明,新生霉素在 Hsp90 的 C 末端与以前未被识别的 ATP 结合位点结合,并在大约 700 microM 处诱导 Hsp90 依赖性客户蛋白的降解。为了开发更有效的 C 末端结合位点抑制剂,制备了新生霉素类似物库并揭示了初始结构-活性关系。这些数据表明香豆素环的 4-羟基部分和新糖附属物的 3'-氨基甲酸酯对 Hsp90 抑制活性有害。为了证实这些发现,制备了 4-去羟基新生霉素 (DHN1) 和 3'-去氨基甲酰基-4-去羟基新生霉素 (DHN2),并针对 Hsp90 进行了评估。这两种化合物都比天然产物更有效,而且 DHN2 被证明比 DHN1 更活跃。为了确定这些部分是否对 DNA 促旋酶抑制很重要,测试了这些化合物抑制 DNA 促旋酶的能力,并发现它们显示出促旋酶活性的显着降低。因此,我们已经建立了第一组明确区分
Synthesis and biological evaluation of novobiocin analogues as potential heat shock protein 90 inhibitors
作者:G.M. Kamal B. Gunaherath、Marilyn T. Marron、E.M. Kithsiri Wijeratne、Luke Whitesell、A.A. Leslie Gunatilaka
DOI:10.1016/j.bmc.2013.06.042
日期:2013.9
inhibitory activity, inhibits Heat shock protein 90 (HSP90) by binding weakly to a putative ATP-binding site within its C-terminus. To develop more potent HSP90 inhibitors that target this site and to define structure–activity relationships (SARs) for this class of compounds, we have synthesized twenty seven 3-amido-7-noviosylcoumarin analogues starting from NB and CA. These were evaluated for evidence of