Novel reversible methionine aminopeptidase-2 (MetAP-2) inhibitors based on purine and related bicyclic templates
作者:Timo Heinrich、Hans-Peter Buchstaller、Bertram Cezanne、Felix Rohdich、Jörg Bomke、Manja Friese-Hamim、Mireille Krier、Thorsten Knöchel、Djordje Musil、Birgitta Leuthner、Frank Zenke
DOI:10.1016/j.bmcl.2016.12.019
日期:2017.2
the synthesis, MetAP-2 binding affinity and structural analysis of reversible MetAP-2 inhibitors. Optimization of enzymatic activity of screening hit 10 (IC50: 1 μM) led to the most potent compound 27 (IC50: 0.038 μM), with a concomitant improvement in LLE from 2.1 to 4.2. Structural analysis of these MetAP-2 inhibitors revealed an unprecedented conformation of the His339 side-chain imidazole ring
天然产物富马洁林1及其衍生物(如TNP-470 2或贝洛尼布3)不可逆地与蛋氨酸氨基肽酶2(MetAP-2)结合。该酶对于蛋白质成熟至关重要,并且在血管生成中起关键作用。在本文中,我们描述了可逆MetAP-2抑制剂的合成,MetAP-2结合亲和力和结构分析。筛选命中10(IC 50:1μM)的酶促活性的优化产生了最有效的化合物27(IC 50:0.038μM),伴随的LLE从2.1改善到4.2。这些MetAP-2抑制剂的结构分析显示,His339侧链咪唑环具有前所未有的构象,被共平面地夹在His331的咪唑和与嘌呤支架结合的芳基醚部分之间。该金属结合部分的系统改变和氢键能力的降低导致三唑并[1,5- a ]嘧啶双环模板发生意外的180°翻转。