Novel 2-thioxothiazolidin-4-one inhibitors of bacterial MurD ligase targeting d-Glu- and diphosphate-binding sites
作者:Tihomir Tomašić、Andreja Kovač、Mihael Simčič、Didier Blanot、Simona Golič Grdadolnik、Stanislav Gobec、Danijel Kikelj、Lucija Peterlin Mašič
DOI:10.1016/j.ejmech.2011.05.070
日期:2011.9
Mur ligases are involved in cytoplasmic steps of bacterial peptidoglycan biosynthesis and are viable targets for antibacterial drug discovery. We have designed and synthesized a focused chemical library of compounds combining the glutamic acid moiety and the 2-thioxothiazolidin-4-one, thiazolidine-2,4-dione, 2-iminothiazolidin-4-one or imidazolidine-2,4-dione ring connected by a benzylidene group.
Mur连接酶参与细菌肽聚糖生物合成的细胞质步骤,并且是抗菌药物发现的可行靶标。我们已经设计并合成了结合了谷氨酸部分和2-thioxothothiazolidin-4-one,thiazolidine-2,4-dione,2-iminothiazolidin-4-one或imidzolidine-2,4-dione ring的化合物的重点化学文库通过亚苄基连接。设计这些化合物以靶向MurD活性位点的d -Glu-和二磷酸结合袋,并评估其对大肠杆菌中MurD连接酶的抑制作用。最有效的化合物(R)-9和(S)-9抑制IC 50的MurD分别为45μM和10μM。通过高分辨率NMR光谱确定了MurD活性位点中(R)-9的特异性结合模式。