Is RK-682 a promiscuous enzyme inhibitor? Synthesis and in vitro evaluation of protein tyrosine phosphatase inhibition of racemic RK-682 and analogues
作者:Vânia M.T. Carneiro、Daniela B.B. Trivella、Valéria Scorsato、Viviane L. Beraldo、Mariana P. Dias、Tiago J.P. Sobreira、Ricardo Aparicio、Ronaldo A. Pilli
DOI:10.1016/j.ejmech.2015.04.036
日期:2015.6
compounds, including racemic analogues of 1, dihydropyranones and C-acylated Meldrum's acid derivatives, the later obtained in one synthetic step from commercially available starting material. We further characterized the behavior of some representative compounds in aqueous solution and evaluated their in vitro PTPase binding and inhibition. Our data reveal that rac-1 and some derivatives are able to form
RK-682(1)是已知可选择性抑制蛋白质酪氨酸磷酸酶(PTPases)的天然产物,并在商业上用作体外测定中抑制磷酸酶的阳性对照。蛋白质磷酸酶与多种人类疾病有关,包括糖尿病,癌症和炎症,被认为是药物开发的重要靶标。在这里,我们报告外消旋RK-682(rac - 1)和一组重点化合物的合成,包括1,二氢吡喃酮和C的外消旋类似物-酰化的麦德鲁姆酸衍生物,后者在一个合成步骤中从可商购的起始原料中获得。我们进一步表征了某些代表性化合物在水溶液中的行为,并评估了它们在体外的PTPase结合和抑制作用。我们的数据表明,rac - 1和某些衍生物能够在溶液中形成大的聚集体,其中聚集能力取决于酰基侧链的大小。然而,化合物聚集本身不能促进PTPase抑制。我们的数据揭示了一个新的PTPase抑制剂家族(C酰化的Meldrum酸衍生物)以及rac - 1并且具有暴露的潜在带负电荷的亚结构的衍生物(例如1的te