Synthesis of quaternary α-amino acid-based arginase inhibitors via the Ugi reaction
作者:Adam Golebiowski、Darren Whitehouse、R. Paul Beckett、Michael Van Zandt、Min Koo Ji、Todd R. Ryder、Erik Jagdmann、Monica Andreoli、Yung Lee、Ryan Sheeler、Bruce Conway、Jacek Olczak、Marzena Mazur、Wojciech Czestkowski、Wieslawa Piotrowska、Alexandra Cousido-Siah、Francesc X. Ruiz、Andre Mitschler、Alberto Podjarny、Hagen Schroeter
DOI:10.1016/j.bmcl.2013.06.092
日期:2013.9
to the synthesis of novel arginase inhibitors. In an effort to decrease conformational flexibility of the previously reported series of 2-amino-6-boronohexanoic acid (ABH) analogs 1, we designed and synthesized a series of compounds, 2, in which a piperidine ring is linked directly to a quaternary amino acid center. Further improvement of in vitro activity was achieved by adding two carbon bridge in
Ugi反应已成功应用于新型精氨酸酶抑制剂的合成。为了降低先前报道的2-氨基-6-硼己酸(ABH)系列类似物1的构象柔韧性,我们设计并合成了一系列化合物2,其中哌啶环直接连接至季氨基酸中心。通过在哌啶环中添加两个碳桥,即托烷类似物11,可以进一步提高体外活性。。通过X射线晶体学分析可以合理地看出这些活性的提高,这表明托烷环上的氮原子直接与Asp202接触(精氨酸酶II编号)。与ABH相比,本文所述的合成途径能够设计具有更高效力和显着不同的理化性质的新型精氨酸酶抑制剂。化合物11c代表迄今为止报道的最活体外的精氨酸酶抑制剂。